Company lists · Data refreshed September 2026
Top 25 Security and access control companies worldwide
RevenueBase identified 24,883 security and access control companies worldwide as of September 2026 and tracks 595,726 professional contacts across them, including 93,265 with verified work emails and 80,867 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.
This list covers security and access control companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026. Country and city lists for security and access control companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest security and access control companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 79,699 contacts → | ||||
Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 62,804 contacts → | ||||
Partial evidence “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 40,747 contacts → | ||||
Indirect evidence “50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,335 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 6,169 contacts → | ||||
Indirect evidence “Making the world a safer place.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 5,707 contacts → | ||||
Indirect evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 5,384 contacts → | ||||
Strong evidence “Tyco offers comprehensive security solutions to protect people, facilities, and assets as part of Johnson Controls world leading portfolio of building products, technologies…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4,850 contacts → | ||||
Partial evidence “Axis enables a smarter and safer world by creating solutions for improving security and business performance.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4,835 contacts → | ||||
Partial evidence “As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,572 contacts → | ||||
Indirect evidence “A Graber atua de forma pioneira na prestação de serviços de segurança desde 1982, introduzindo o conceito de projetos integrados na área de segurança.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4,038 contacts → | ||||
Partial evidence “Excelsior Defense is a security and investigations company based out of St.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 3,843 contacts → | ||||
Partial evidence “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,620 contacts → | ||||
Partial evidence “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3,387 contacts → | ||||
Partial evidence “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3,024 contacts → | ||||
Partial evidence “Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,772 contacts → | ||||
Indirect evidence “Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,678 contacts → | ||||
Indirect evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2,165 contacts → | ||||
Indirect evidence “Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2,126 contacts → | ||||
Partial evidence “Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,045 contacts → | ||||
Partial evidence “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,813 contacts → | ||||
Partial evidence “At Wilson Security, we are committed to building a safer future for everyone.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,632 contacts → | ||||
Indirect evidence “Over 90 years of protecting the things that matter, we’ve seen more than most.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,544 contacts → | ||||
Partial evidence “FIDELITY ADT COMMERCIAL Fidelity ADT Commercial, a division of Fidelity ADT is a leading provider of integrated retail performance and security solutions, deployed today at more…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,419 contacts → | ||||
Indirect evidence “See a different world.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: security and access control companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names security and access control companies.
- Partial evidence
- Its own public description names part of security and access control companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security and access control companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 24,883 security and access control companies worldwide
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Security and access control companies worldwide at a glance
As of Sep 6, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security and access control companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 43 countries, largest first: the United States, the United Kingdom, Brazil, France, India, Italy, Canada, Germany, Australia, the Netherlands and 33 more. Country and city lists for security and access control companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security and access control companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names security and access control companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among security and access control companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 93,265 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph between September 6, 2026 and September 14, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security and access control companies by location
104 lists · largest firstEvery Security and access control companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security and access control companies based in the United States5,769
- Security and access control companies based in the United Kingdom3,076
- Security and access control companies based in Brazil2,381
- Security and access control companies based in France1,432
- Security and access control companies based in India1,155
- Security and access control companies based in Italy1,083
- Security and access control companies based in Canada898
- Security and access control companies based in Germany814
- Security and access control companies based in Australia805
- Security and access control companies based in the Netherlands741
- Security and access control companies based in Spain696
- Security and access control companies based in South Africa661
- Security and access control companies based in Mexico602
- Security and access control companies based in Argentina440
- Security and access control companies based in Belgium363
- Security and access control companies based in Türkiye307
- Security and access control companies based in Poland294
- Security and access control companies based in Sweden291
- Security and access control companies based in the United Arab Emirates274
- Security and access control companies based in Colombia265
- Security and access control companies based in Chile227
- Security and access control companies based in Switzerland206
- Security and access control companies based in Portugal204
- Security and access control companies based in Ireland176
- Security and access control companies based in Romania176
- Security and access control companies based in Peru160
- Security and access control companies based in Egypt150
- Security and access control companies based in Denmark139
- Security and access control companies based in New Zealand130
- Security and access control companies based in Saudi Arabia110
- Security and access control companies based in Malaysia108
- Security and access control companies based in Greece101
- Security and access control companies based in Czechia88
- Security and access control companies based in Hungary85
- Security and access control companies based in Indonesia73
- Security and access control companies based in Austria65
- Security and access control companies based in Norway65
- Security and access control companies based in Qatar57
- Security and access control companies based in Finland56
- Security and access control companies based in Serbia50
- Security and access control companies based in Israel48
- Security and access control companies based in Uruguay36
- Security and access control companies based in Panama26
Cities
- Security and access control companies based in Sao Paulo, Brazil380
- Security and access control companies based in London, United Kingdom282
- Security and access control companies based in Rio De Janeiro, Brazil102
- Security and access control companies based in Buenos Aires, Argentina94
- Security and access control companies based in Madrid, Spain90
- Security and access control companies based in Johannesburg, South Africa82
- Security and access control companies based in New Delhi, India81
- Security and access control companies based in New York, United States81
- Security and access control companies based in Mumbai, India80
- Security and access control companies based in Paris, France69
- Security and access control companies based in Belo Horizonte, Brazil67
- Security and access control companies based in Toronto, Canada67
- Security and access control companies based in Houston, United States65
- Security and access control companies based in Campinas, Brazil64
- Security and access control companies based in Miami, United States63
- Security and access control companies based in Pune, India63
- Security and access control companies based in Stockholm, Sweden60
- Security and access control companies based in Sydney, Australia60
- Security and access control companies based in Hyderabad, India57
- Security and access control companies based in Cape Town, South Africa56
- Security and access control companies based in Chennai, India56
- Security and access control companies based in Melbourne, Australia56
- Security and access control companies based in Porto Alegre, Brazil53
- Security and access control companies based in Curitiba, Brazil52
- Security and access control companies based in Manchester, United Kingdom50
- Security and access control companies based in Los Angeles, United States47
- Security and access control companies based in Phoenix, United States45
- Security and access control companies based in Dallas, United States44
- Security and access control companies based in Auckland, New Zealand43
- Security and access control companies based in Birmingham, United Kingdom42
- Security and access control companies based in Barcelona, Spain40
- Security and access control companies based in Bangalore, India38
- Security and access control companies based in Las Vegas, United States38
- Security and access control companies based in Berlin, Germany36
- Security and access control companies based in Glasgow, United Kingdom36
- Security and access control companies based in Edmonton, Canada34
- Security and access control companies based in Tampa, United States33
- Security and access control companies based in Atlanta, United States31
- Security and access control companies based in Brisbane, Australia31
- Security and access control companies based in Calgary, Canada31
- Security and access control companies based in Charlotte, United States31
- Security and access control companies based in San Antonio, United States31
- Security and access control companies based in Brooklyn, United States30
- Security and access control companies based in Nottingham, United Kingdom30
- Security and access control companies based in Chicago, United States29
- Security and access control companies based in Austin, United States28
- Security and access control companies based in Belfast, United Kingdom28
- Security and access control companies based in Denver, United States27
- Security and access control companies based in Indianapolis, United States27
- Security and access control companies based in Jacksonville, United States27
- Security and access control companies based in Leeds, United Kingdom27
- Security and access control companies based in Leicester, United Kingdom27
- Security and access control companies based in Liverpool, United Kingdom27
- Security and access control companies based in San Diego, United States27
- Security and access control companies based in Bristol, United Kingdom26
- Security and access control companies based in Perth, Australia26
- Security and access control companies based in Bucharest, Romania25
- Security and access control companies based in Mississauga, Canada25
- Security and access control companies based in Orlando, United States25
- Security and access control companies based in San Jose, United States25
- Security and access control companies based in Sheffield, United Kingdom25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names security and access control companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many security and access control companies are there worldwide?
RevenueBase identified 24,883 security and access control companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
G4s, headquartered in London, tops this list with the largest team on record.
Which country has the most security and access control companies?
The United States leads with 5,769 companies, followed by the United Kingdom (3,076) and Brazil (2,381). Every security and access control companies list by country and city is linked on this page.
Which city has the most security and access control companies?
Sao Paulo leads with 506 headquartered companies, followed by London (361) and Dubai (143).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 93,265 verified decision-maker contacts tracked across these 24,883 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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Top 25 security and access control companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 24,883 matching company records for security and access control companies worldwide, with 595,726 tracked contacts and 93,265 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 security and access control companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  G4sg4s.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 79,699 contacts → |
“G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Allied Universalaus.comHQ: Irvine, CA, United StatesReported employees: 10001+ | Irvine, CA, United States | 10001+ | Exact match | 62,804 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Prosegurprosegur.comHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 40,747 contacts → |
“50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Securitas Groupsecuritas.comHQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 6,335 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Chubb Fire & Securitychubbfs.comHQ: Staines, United KingdomReported employees: 10001+ | Staines, United Kingdom | 10001+ | Exact match | 6,169 contacts → |
“Making the world a safer place.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Convergintconvergint.comHQ: Hoffman Estates, IL, United StatesReported employees: 10001+ | Hoffman Estates, IL, United States | 10001+ | Exact match | 5,707 contacts → |
“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  TYCOtyco.comHQ: Cork, IrelandReported employees: 10001+ | Cork, Ireland | 10001+ | Exact match | 5,384 contacts → |
“Tyco offers comprehensive security solutions to protect people, facilities, and assets as part of Johnson Controls world leading portfolio of building products, technologies…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Axis Communicationsaxis.comHQ: Lund, SwedenReported employees: 1,001-5,000 | Lund, Sweden | 1,001-5,000 | Exact match | 4,850 contacts → |
“Axis enables a smarter and safer world by creating solutions for improving security and business performance.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Paladin Security Group LTDpaladinsecurity.comHQ: Burnaby, BC, CanadaReported employees: 10001+ | Burnaby, BC, Canada | 10001+ | Exact match | 4,835 contacts → |
“As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Graber Sistemas DE Segurançagraber.com.brHQ: Barueri, BrazilReported employees: 10001+ | Barueri, Brazil | 10001+ | Exact match | 4,572 contacts → |
“A Graber atua de forma pioneira na prestação de serviços de segurança desde 1982, introduzindo o conceito de projetos integrados na área de segurança.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Securitas Francefrance.securitas.frHQ: Issy-les-moulineaux, FranceReported employees: 10001+ | Issy-les-moulineaux, France | 10001+ | Exact match | 3,843 contacts → |
“Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Securitas Seguridad Españasecuritas.esHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Sicuritalia S.P.Asicuritalia.itHQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Allegionallegion.comHQ: Dublin 7, IrelandReported employees: 10001+ | Dublin 7, Ireland | 10001+ | Exact match | 3,024 contacts → |
“Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Grupo GRgrupogr.com.brHQ: São Paulo, BrazilReported employees: 10001+ | São Paulo, Brazil | 10001+ | Exact match | 2,772 contacts → |
“Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Automated Systems Design, INCasd-usa.comHQ: Alpharetta, GA, United StatesReported employees: Not recorded | Alpharetta, GA, United States | Not recorded | Exact match | 2,678 contacts → |
“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Security Segurança E Serviçossousecurity.com.brHQ: São Paulo, BrazilReported employees: 5,001-10,000 | São Paulo, Brazil | 5,001-10,000 | Exact match | 2,165 contacts → |
“Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Pronet Security Servicespronet.com.trHQ: Istanbul, TürkiyeReported employees: 1,001-5,000 | Istanbul, Türkiye | 1,001-5,000 | Exact match | 2,126 contacts → |
“Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Everoneveronsolutions.comHQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 2,045 contacts → |
“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Wilson Securitywilsonsecurity.com.auHQ: Essendon Fields, AustraliaReported employees: 5,001-10,000 | Essendon Fields, Australia | 5,001-10,000 | Exact match | 1,813 contacts → |
“At Wilson Security, we are committed to building a safer future for everyone.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Securitas Canadasecuritas.caHQ: North York, ON, CanadaReported employees: 5,001-10,000 | North York, ON, Canada | 5,001-10,000 | Exact match | 1,632 contacts → |
“Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Fidelity ADTadt.co.zaHQ: Johannesburg, South AfricaReported employees: 10001+ | Johannesburg, South Africa | 10001+ | Exact match | 1,544 contacts → |
“FIDELITY ADT COMMERCIAL Fidelity ADT Commercial, a division of Fidelity ADT is a leading provider of integrated retail performance and security solutions, deployed today at more…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Securitas Belgiumsecuritas.beHQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,419 contacts → |
“See a different world.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 24,883 company matches
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Security and access control companies: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
24,638 records in the displayed employee bands.
245 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Security and access control companies by location
104 lists · largest firstEvery Security and access control companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security and access control companies based in the United States5,769
- Security and access control companies based in the United Kingdom3,076
- Security and access control companies based in Brazil2,381
- Security and access control companies based in France1,432
- Security and access control companies based in India1,155
- Security and access control companies based in Italy1,083
- Security and access control companies based in Canada898
- Security and access control companies based in Germany814
- Security and access control companies based in Australia805
- Security and access control companies based in the Netherlands741
- Security and access control companies based in Spain696
- Security and access control companies based in South Africa661
- Security and access control companies based in Mexico602
- Security and access control companies based in Argentina440
- Security and access control companies based in Belgium363
- Security and access control companies based in Türkiye307
- Security and access control companies based in Poland294
- Security and access control companies based in Sweden291
- Security and access control companies based in the United Arab Emirates274
- Security and access control companies based in Colombia265
- Security and access control companies based in Chile227
- Security and access control companies based in Switzerland206
- Security and access control companies based in Portugal204
- Security and access control companies based in Ireland176
- Security and access control companies based in Romania176
- Security and access control companies based in Peru160
- Security and access control companies based in Egypt150
- Security and access control companies based in Denmark139
- Security and access control companies based in New Zealand130
- Security and access control companies based in Saudi Arabia110
- Security and access control companies based in Malaysia108
- Security and access control companies based in Greece101
- Security and access control companies based in Czechia88
- Security and access control companies based in Hungary85
- Security and access control companies based in Indonesia73
- Security and access control companies based in Austria65
- Security and access control companies based in Norway65
- Security and access control companies based in Qatar57
- Security and access control companies based in Finland56
- Security and access control companies based in Serbia50
- Security and access control companies based in Israel48
- Security and access control companies based in Uruguay36
- Security and access control companies based in Panama26
Cities
- Security and access control companies based in Sao Paulo, Brazil380
- Security and access control companies based in London, United Kingdom282
- Security and access control companies based in Rio De Janeiro, Brazil102
- Security and access control companies based in Buenos Aires, Argentina94
- Security and access control companies based in Madrid, Spain90
- Security and access control companies based in Johannesburg, South Africa82
- Security and access control companies based in New Delhi, India81
- Security and access control companies based in New York, United States81
- Security and access control companies based in Mumbai, India80
- Security and access control companies based in Paris, France69
- Security and access control companies based in Belo Horizonte, Brazil67
- Security and access control companies based in Toronto, Canada67
- Security and access control companies based in Houston, United States65
- Security and access control companies based in Campinas, Brazil64
- Security and access control companies based in Miami, United States63
- Security and access control companies based in Pune, India63
- Security and access control companies based in Stockholm, Sweden60
- Security and access control companies based in Sydney, Australia60
- Security and access control companies based in Hyderabad, India57
- Security and access control companies based in Cape Town, South Africa56
- Security and access control companies based in Chennai, India56
- Security and access control companies based in Melbourne, Australia56
- Security and access control companies based in Porto Alegre, Brazil53
- Security and access control companies based in Curitiba, Brazil52
- Security and access control companies based in Manchester, United Kingdom50
- Security and access control companies based in Los Angeles, United States47
- Security and access control companies based in Phoenix, United States45
- Security and access control companies based in Dallas, United States44
- Security and access control companies based in Auckland, New Zealand43
- Security and access control companies based in Birmingham, United Kingdom42
- Security and access control companies based in Barcelona, Spain40
- Security and access control companies based in Bangalore, India38
- Security and access control companies based in Las Vegas, United States38
- Security and access control companies based in Berlin, Germany36
- Security and access control companies based in Glasgow, United Kingdom36
- Security and access control companies based in Edmonton, Canada34
- Security and access control companies based in Tampa, United States33
- Security and access control companies based in Atlanta, United States31
- Security and access control companies based in Brisbane, Australia31
- Security and access control companies based in Calgary, Canada31
- Security and access control companies based in Charlotte, United States31
- Security and access control companies based in San Antonio, United States31
- Security and access control companies based in Brooklyn, United States30
- Security and access control companies based in Nottingham, United Kingdom30
- Security and access control companies based in Chicago, United States29
- Security and access control companies based in Austin, United States28
- Security and access control companies based in Belfast, United Kingdom28
- Security and access control companies based in Denver, United States27
- Security and access control companies based in Indianapolis, United States27
- Security and access control companies based in Jacksonville, United States27
- Security and access control companies based in Leeds, United Kingdom27
- Security and access control companies based in Leicester, United Kingdom27
- Security and access control companies based in Liverpool, United Kingdom27
- Security and access control companies based in San Diego, United States27
- Security and access control companies based in Bristol, United Kingdom26
- Security and access control companies based in Perth, Australia26
- Security and access control companies based in Bucharest, Romania25
- Security and access control companies based in Mississauga, Canada25
- Security and access control companies based in Orlando, United States25
- Security and access control companies based in San Jose, United States25
- Security and access control companies based in Sheffield, United Kingdom25
Questions about this company list
What does Exact match mean for security and access control companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many security and access control companies did RevenueBase find worldwide?
The saved snapshot records 24,883 matching company records, 595,726 tracked contacts and 93,265 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 security and access control companies worldwide. Snapshot: September 6, 2026. https://revenuebase.ai/companies/browse/security-and-access-control-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 security and access control companies worldwide
RevenueBase records 24,883 matching company records for security and access control companies worldwide, with 595,726 tracked contacts and 93,265 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 security and access control companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | G4sg4s.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 79,699 contacts → |
“G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Allied Universalaus.com HQ: Irvine, CA, United StatesReported employees: 10001+ | Irvine, CA, United States | 10001+ | Exact match | 62,804 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Prosegurprosegur.com HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 40,747 contacts → |
“50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Securitas Groupsecuritas.com HQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 6,335 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Chubb Fire & Securitychubbfs.com HQ: Staines, United KingdomReported employees: 10001+ | Staines, United Kingdom | 10001+ | Exact match | 6,169 contacts → |
“Making the world a safer place.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Convergintconvergint.com HQ: Hoffman Estates, IL, United StatesReported employees: 10001+ | Hoffman Estates, IL, United States | 10001+ | Exact match | 5,707 contacts → |
“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TYCOtyco.com HQ: Cork, IrelandReported employees: 10001+ | Cork, Ireland | 10001+ | Exact match | 5,384 contacts → |
“Tyco offers comprehensive security solutions to protect people, facilities, and assets as part of Johnson Controls world leading portfolio of building products, technologies…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Axis Communicationsaxis.com HQ: Lund, SwedenReported employees: 1,001-5,000 | Lund, Sweden | 1,001-5,000 | Exact match | 4,850 contacts → |
“Axis enables a smarter and safer world by creating solutions for improving security and business performance.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Paladin Security Group LTDpaladinsecurity.com HQ: Burnaby, BC, CanadaReported employees: 10001+ | Burnaby, BC, Canada | 10001+ | Exact match | 4,835 contacts → |
“As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Graber Sistemas DE Segurançagraber.com.br HQ: Barueri, BrazilReported employees: 10001+ | Barueri, Brazil | 10001+ | Exact match | 4,572 contacts → |
“A Graber atua de forma pioneira na prestação de serviços de segurança desde 1982, introduzindo o conceito de projetos integrados na área de segurança.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Securitas Francefrance.securitas.fr HQ: Issy-les-moulineaux, FranceReported employees: 10001+ | Issy-les-moulineaux, France | 10001+ | Exact match | 3,843 contacts → |
“Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Securitas Seguridad Españasecuritas.es HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Sicuritalia S.P.Asicuritalia.it HQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Allegionallegion.com HQ: Dublin 7, IrelandReported employees: 10001+ | Dublin 7, Ireland | 10001+ | Exact match | 3,024 contacts → |
“Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Grupo GRgrupogr.com.br HQ: São Paulo, BrazilReported employees: 10001+ | São Paulo, Brazil | 10001+ | Exact match | 2,772 contacts → |
“Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Automated Systems Design, INCasd-usa.com HQ: Alpharetta, GA, United StatesReported employees: Not recorded | Alpharetta, GA, United States | Not recorded | Exact match | 2,678 contacts → |
“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Security Segurança E Serviçossousecurity.com.br HQ: São Paulo, BrazilReported employees: 5,001-10,000 | São Paulo, Brazil | 5,001-10,000 | Exact match | 2,165 contacts → |
“Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Pronet Security Servicespronet.com.tr HQ: Istanbul, TürkiyeReported employees: 1,001-5,000 | Istanbul, Türkiye | 1,001-5,000 | Exact match | 2,126 contacts → |
“Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Everoneveronsolutions.com HQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 2,045 contacts → |
“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Wilson Securitywilsonsecurity.com.au HQ: Essendon Fields, AustraliaReported employees: 5,001-10,000 | Essendon Fields, Australia | 5,001-10,000 | Exact match | 1,813 contacts → |
“At Wilson Security, we are committed to building a safer future for everyone.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Securitas Canadasecuritas.ca HQ: North York, ON, CanadaReported employees: 5,001-10,000 | North York, ON, Canada | 5,001-10,000 | Exact match | 1,632 contacts → |
“Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Fidelity ADTadt.co.za HQ: Johannesburg, South AfricaReported employees: 10001+ | Johannesburg, South Africa | 10001+ | Exact match | 1,544 contacts → |
“FIDELITY ADT COMMERCIAL Fidelity ADT Commercial, a division of Fidelity ADT is a leading provider of integrated retail performance and security solutions, deployed today at more…” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Securitas Belgiumsecuritas.be HQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,419 contacts → |
“See a different world.” Recorded description excerpt · September 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 24,883 company matches
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Security and access control companies: dataset insights
September 6, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
24,638 records in the displayed employee bands.
245 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Security and access control companies by location
104 lists · largest firstEvery Security and access control companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security and access control companies based in the United States5,769
- Security and access control companies based in the United Kingdom3,076
- Security and access control companies based in Brazil2,381
- Security and access control companies based in France1,432
- Security and access control companies based in India1,155
- Security and access control companies based in Italy1,083
- Security and access control companies based in Canada898
- Security and access control companies based in Germany814
- Security and access control companies based in Australia805
- Security and access control companies based in the Netherlands741
- Security and access control companies based in Spain696
- Security and access control companies based in South Africa661
- Security and access control companies based in Mexico602
- Security and access control companies based in Argentina440
- Security and access control companies based in Belgium363
- Security and access control companies based in Türkiye307
- Security and access control companies based in Poland294
- Security and access control companies based in Sweden291
- Security and access control companies based in the United Arab Emirates274
- Security and access control companies based in Colombia265
- Security and access control companies based in Chile227
- Security and access control companies based in Switzerland206
- Security and access control companies based in Portugal204
- Security and access control companies based in Ireland176
- Security and access control companies based in Romania176
- Security and access control companies based in Peru160
- Security and access control companies based in Egypt150
- Security and access control companies based in Denmark139
- Security and access control companies based in New Zealand130
- Security and access control companies based in Saudi Arabia110
- Security and access control companies based in Malaysia108
- Security and access control companies based in Greece101
- Security and access control companies based in Czechia88
- Security and access control companies based in Hungary85
- Security and access control companies based in Indonesia73
- Security and access control companies based in Austria65
- Security and access control companies based in Norway65
- Security and access control companies based in Qatar57
- Security and access control companies based in Finland56
- Security and access control companies based in Serbia50
- Security and access control companies based in Israel48
- Security and access control companies based in Uruguay36
- Security and access control companies based in Panama26
Cities
- Security and access control companies based in Sao Paulo, Brazil380
- Security and access control companies based in London, United Kingdom282
- Security and access control companies based in Rio De Janeiro, Brazil102
- Security and access control companies based in Buenos Aires, Argentina94
- Security and access control companies based in Madrid, Spain90
- Security and access control companies based in Johannesburg, South Africa82
- Security and access control companies based in New Delhi, India81
- Security and access control companies based in New York, United States81
- Security and access control companies based in Mumbai, India80
- Security and access control companies based in Paris, France69
- Security and access control companies based in Belo Horizonte, Brazil67
- Security and access control companies based in Toronto, Canada67
- Security and access control companies based in Houston, United States65
- Security and access control companies based in Campinas, Brazil64
- Security and access control companies based in Miami, United States63
- Security and access control companies based in Pune, India63
- Security and access control companies based in Stockholm, Sweden60
- Security and access control companies based in Sydney, Australia60
- Security and access control companies based in Hyderabad, India57
- Security and access control companies based in Cape Town, South Africa56
- Security and access control companies based in Chennai, India56
- Security and access control companies based in Melbourne, Australia56
- Security and access control companies based in Porto Alegre, Brazil53
- Security and access control companies based in Curitiba, Brazil52
- Security and access control companies based in Manchester, United Kingdom50
- Security and access control companies based in Los Angeles, United States47
- Security and access control companies based in Phoenix, United States45
- Security and access control companies based in Dallas, United States44
- Security and access control companies based in Auckland, New Zealand43
- Security and access control companies based in Birmingham, United Kingdom42
- Security and access control companies based in Barcelona, Spain40
- Security and access control companies based in Bangalore, India38
- Security and access control companies based in Las Vegas, United States38
- Security and access control companies based in Berlin, Germany36
- Security and access control companies based in Glasgow, United Kingdom36
- Security and access control companies based in Edmonton, Canada34
- Security and access control companies based in Tampa, United States33
- Security and access control companies based in Atlanta, United States31
- Security and access control companies based in Brisbane, Australia31
- Security and access control companies based in Calgary, Canada31
- Security and access control companies based in Charlotte, United States31
- Security and access control companies based in San Antonio, United States31
- Security and access control companies based in Brooklyn, United States30
- Security and access control companies based in Nottingham, United Kingdom30
- Security and access control companies based in Chicago, United States29
- Security and access control companies based in Austin, United States28
- Security and access control companies based in Belfast, United Kingdom28
- Security and access control companies based in Denver, United States27
- Security and access control companies based in Indianapolis, United States27
- Security and access control companies based in Jacksonville, United States27
- Security and access control companies based in Leeds, United Kingdom27
- Security and access control companies based in Leicester, United Kingdom27
- Security and access control companies based in Liverpool, United Kingdom27
- Security and access control companies based in San Diego, United States27
- Security and access control companies based in Bristol, United Kingdom26
- Security and access control companies based in Perth, Australia26
- Security and access control companies based in Bucharest, Romania25
- Security and access control companies based in Mississauga, Canada25
- Security and access control companies based in Orlando, United States25
- Security and access control companies based in San Jose, United States25
- Security and access control companies based in Sheffield, United Kingdom25
Questions about this company list
What does Exact match mean for security and access control companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many security and access control companies did RevenueBase find worldwide?
The saved snapshot records 24,883 matching company records, 595,726 tracked contacts and 93,265 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 security and access control companies worldwide. Snapshot: September 6, 2026. https://revenuebase.ai/companies/browse/security-and-access-control-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗