Company lists · Data refreshed October 2026
Top 25 Government security contractors worldwide
RevenueBase identified 6,929 company matches for government security contractors worldwide as of October 2026 and tracks 223,906 professional contacts across them, including 19,933 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for government security contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026. Country and city lists for government security contractors follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 government security contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,634 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 2 | 9,697 contacts → | ||||
Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 3 | 4,038 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 4 | 3,612 contacts → | ||||
Exact match “EVERYWHERE SECURITY MATTERS.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 5 | 3,004 contacts → | ||||
Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 6 | 2,752 contacts → | ||||
Exact match “Triple Canopy is a Constellis company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 7 | 2,462 contacts → | ||||
Exact match “A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 8 | 2,010 contacts → | ||||
Exact match “The MSS Security Group (MSS) comprising MSS Security, MSS Strategic Medical & Rescue and SDS is unrivalled in its experience, capability and reputation.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 9 | 1,949 contacts → | ||||
Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 10 | 1,699 contacts → | ||||
Exact match “نحن شركه تعمل في مجال الحراسات والخدمات الامنيه نقدم افضل الخدمات:*مشرفين امن *حراس امن *سيارات امنيه” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 11 | 1,632 contacts → | ||||
Exact match “Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 12 | 1,441 contacts → | ||||
Exact match “Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 13 | 1,419 contacts → | ||||
Exact match “See a different world.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 14 | 1,398 contacts → | ||||
Exact match “World Security being a Semi Govt Organization provides specialist turnkey security solutions to the local market and beyond, as well as the Dubai World Group.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 15 | 1,375 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 16 | 1,374 contacts → | ||||
Exact match “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 17 | 1,318 contacts → | ||||
Exact match “Protectas belongs to the Swedish Securitas AB, the knowledged leader in security (which incidentally is not affiliated with the Swiss company of the same name, Securitas AG).” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 18 | 1,260 contacts → | ||||
Exact match “GardaWorld Federal” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 19 | 1,233 contacts → | ||||
Exact match “BANQUE POPULAIRE BOURGOGNE FRANCHE-COM is a Security and Investigations company located in 14 BOULEVARD DE LA TREMOUILLE, DIJON, Burgundy, France.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 20 | 1,151 contacts → | ||||
Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 21 | 1,118 contacts → | ||||
Exact match “Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 22 | 1,081 contacts → | ||||
Exact match “Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 23 | 1,062 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 24 | 1,050 contacts → | ||||
Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
| 25 | 1,008 contacts → | ||||
Exact match “World-renowned expertise, local solutions.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “government security contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 6,929 government security contractors worldwide
See the full list, filter by size, metro and specialty, and access 19,933 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Government security contractors worldwide at a glance
As of Oct 1, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for government security contractors are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “government security contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 19,933 professional contacts with verified work emails across the full matched dataset. 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 on October 1, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Government security contractors by location
41 lists · largest firstEvery Government security contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Government security contractors based in the United States2,809
- Government security contractors based in the United Kingdom799
- Government security contractors based in France657
- Government security contractors based in Brazil590
- Government security contractors based in Germany461
- Government security contractors based in Canada429
- Government security contractors based in the Netherlands329
- Government security contractors based in Italy311
- Government security contractors based in Australia310
- Government security contractors based in South Africa296
- Government security contractors based in India280
- Government security contractors based in Mexico268
- Government security contractors based in Argentina166
- Government security contractors based in Spain133
- Government security contractors based in Switzerland104
- Government security contractors based in Colombia84
- Government security contractors based in the United Arab Emirates76
- Government security contractors based in Poland71
- Government security contractors based in Belgium58
- Government security contractors based in Sweden50
- Government security contractors based in New Zealand42
- Government security contractors based in Greece38
- Government security contractors based in Israel38
- Government security contractors based in Ireland25
Cities
- Government security contractors based in London, United Kingdom263
- Government security contractors based in Sao Paulo, Brazil136
- Government security contractors based in New York, United States89
- Government security contractors based in Los Angeles, United States88
- Government security contractors based in Houston, United States75
- Government security contractors based in Paris, France73
- Government security contractors based in Toronto, Canada73
- Government security contractors based in Johannesburg, South Africa53
- Government security contractors based in Miami, United States50
- Government security contractors based in Chicago, United States48
- Government security contractors based in Berlin, Germany46
- Government security contractors based in Dallas, United States44
- Government security contractors based in Atlanta, United States40
- Government security contractors based in Dubai, United Arab Emirates39
- Government security contractors based in Melbourne, Australia35
- Government security contractors based in Washington, United States34
- Government security contractors based in Las Vegas, United States26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “government security contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many government security contractors are there worldwide?
RevenueBase identified 6,929 company matches for government security contractors worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Securitas Security Services Usa, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most government security contractors?
The United States leads with 2,809 companies, followed by the United Kingdom (799) and France (657). Every government security contractors list by country and city is linked on this page.
Which city has the most government security contractors?
London leads with 156 company records, followed by New York (67) and Los Angeles (55).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 19,933 professional contacts with verified work emails tracked across these 6,929 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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 SmartSearch, 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.
More company lists
Company intelligence · public preview
Top 25 government security contractors worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 6,929 matching company records for government security contractors worldwide, with 223,906 tracked contacts and 19,933 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: October 1, 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 government security contractors 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 |  Securitas Security Services Usa, INCsecuritasinc.comHQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Mantechmantech.comHQ: Herndon, VA, United StatesReported employees: 5,001-10,000 | Herndon, VA, United States | 5,001-10,000 | Exact match | 9,697 contacts → |
“MANTECH is more than a technology company.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Inter-Con Securityicsecurity.comHQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Securitas Sverige ABsecuritas.seHQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Triple Canopy A Constellis Companyconstellis.comHQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 2,752 contacts → |
“Triple Canopy is a Constellis company.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Orsegups Participações S Aorsegups.com.brHQ: São José, BrazilReported employees: 5,001-10,000 | São José, Brazil | 5,001-10,000 | Exact match | 2,462 contacts → |
“A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  MSS Securitymsssecurity.com.auHQ: Parramatta, AustraliaReported employees: 5,001-10,000 | Parramatta, Australia | 5,001-10,000 | Exact match | 2,010 contacts → |
“The MSS Security Group (MSS) comprising MSS Security, MSS Strategic Medical & Rescue and SDS is unrivalled in its experience, capability and reputation.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Paragon Systems INCparasys.comHQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,949 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  شركه حراسات امنيهwa.meHQ: جده, Saudi ArabiaReported employees: Not recorded | جده, Saudi Arabia | Not recorded | Exact match | 1,699 contacts → |
“نحن شركه تعمل في مجال الحراسات والخدمات الامنيه نقدم افضل الخدمات:*مشرفين امن *حراس امن *سيارات امنيه” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Admiral Security Servicesadmiralsecurity.comHQ: Bethesda, MD, United StatesReported employees: 5,001-10,000 | Bethesda, MD, United States | 5,001-10,000 | Exact match | 1,441 contacts → |
“Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  World Securityworldsecurity.aeHQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,398 contacts → |
“World Security being a Semi Govt Organization provides specialist turnkey security solutions to the local market and beyond, as well as the Dubai World Group.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Guardsmarkguardsmark.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  First Security Group LLCfirstsg.comHQ: Dubai, United Arab EmiratesReported employees: 5,001-10,000 | Dubai, United Arab Emirates | 5,001-10,000 | Exact match | 1,374 contacts → |
“First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Protectasprotectas.comHQ: Lausanne, SwitzerlandReported employees: 1,001-5,000 | Lausanne, Switzerland | 1,001-5,000 | Exact match | 1,318 contacts → |
“Protectas belongs to the Swedish Securitas AB, the knowledged leader in security (which incidentally is not affiliated with the Swiss company of the same name, Securitas AG).” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gardaworld Federal Servicesgarda-federal.com HQ: Arlington, VA, United StatesReported employees: 1,001-5,000 | Arlington, VA, United States | 1,001-5,000 | Exact match | 1,260 contacts → |
“GardaWorld Federal” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Banque Populaire Bourgogne Franche-Combanquepopulaire.frHQ: Dijon, FranceReported employees: 1,001-5,000 | Dijon, France | 1,001-5,000 | Exact match | 1,233 contacts → |
“BANQUE POPULAIRE BOURGOGNE FRANCHE-COM is a Security and Investigations company located in 14 BOULEVARD DE LA TREMOUILLE, DIJON, Burgundy, France.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  SOS Security LLCsossecurity.comHQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,118 contacts → |
“Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Andrews Internationalandrewsinternational.comHQ: Burbank, CA, United StatesReported employees: 10001+ | Burbank, CA, United States | 10001+ | Exact match | 1,081 contacts → |
“Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  St. Moritz Security Services, INCsmssi.comHQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Brosnan Risk Consultantsbrosnanrisk.comHQ: Pearl River, NY, United StatesReported employees: 5,001-10,000 | Pearl River, NY, United States | 5,001-10,000 | Exact match | 1,050 contacts → |
“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  KK Security Ltd, A Gardaworld Companykksecurity.comHQ: Westlands, KenyaReported employees: 1,001-5,000 | Westlands, Kenya | 1,001-5,000 | Exact match | 1,008 contacts → |
“World-renowned expertise, local solutions.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 6,929 company matches
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Government security contractors: dataset insights
October 1, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
6,895 records in the displayed employee bands.
34 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 6,929 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: October 1, 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 ↗
Government security contractors by location
41 lists · largest firstEvery Government security contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Government security contractors based in the United States2,809
- Government security contractors based in the United Kingdom799
- Government security contractors based in France657
- Government security contractors based in Brazil590
- Government security contractors based in Germany461
- Government security contractors based in Canada429
- Government security contractors based in the Netherlands329
- Government security contractors based in Italy311
- Government security contractors based in Australia310
- Government security contractors based in South Africa296
- Government security contractors based in India280
- Government security contractors based in Mexico268
- Government security contractors based in Argentina166
- Government security contractors based in Spain133
- Government security contractors based in Switzerland104
- Government security contractors based in Colombia84
- Government security contractors based in the United Arab Emirates76
- Government security contractors based in Poland71
- Government security contractors based in Belgium58
- Government security contractors based in Sweden50
- Government security contractors based in New Zealand42
- Government security contractors based in Greece38
- Government security contractors based in Israel38
- Government security contractors based in Ireland25
Cities
- Government security contractors based in London, United Kingdom263
- Government security contractors based in Sao Paulo, Brazil136
- Government security contractors based in New York, United States89
- Government security contractors based in Los Angeles, United States88
- Government security contractors based in Houston, United States75
- Government security contractors based in Paris, France73
- Government security contractors based in Toronto, Canada73
- Government security contractors based in Johannesburg, South Africa53
- Government security contractors based in Miami, United States50
- Government security contractors based in Chicago, United States48
- Government security contractors based in Berlin, Germany46
- Government security contractors based in Dallas, United States44
- Government security contractors based in Atlanta, United States40
- Government security contractors based in Dubai, United Arab Emirates39
- Government security contractors based in Melbourne, Australia35
- Government security contractors based in Washington, United States34
- Government security contractors based in Las Vegas, United States26
Questions about this company list
What does Exact match mean for government security contractors?
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 government security contractors did RevenueBase find worldwide?
The saved snapshot records 6,929 matching company records, 223,906 tracked contacts and 19,933 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: October 1, 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 government security contractors worldwide. Snapshot: October 1, 2026. https://revenuebase.ai/companies/browse/government-security-contractors.
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 government security contractors worldwide
RevenueBase records 6,929 matching company records for government security contractors worldwide, with 223,906 tracked contacts and 19,933 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: October 1, 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 government security contractors 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 | Securitas Security Services Usa, INCsecuritasinc.com HQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Mantechmantech.com HQ: Herndon, VA, United StatesReported employees: 5,001-10,000 | Herndon, VA, United States | 5,001-10,000 | Exact match | 9,697 contacts → |
“MANTECH is more than a technology company.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Inter-Con Securityicsecurity.com HQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Securitas Sverige ABsecuritas.se HQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Triple Canopy A Constellis Companyconstellis.com HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 2,752 contacts → |
“Triple Canopy is a Constellis company.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Orsegups Participações S Aorsegups.com.br HQ: São José, BrazilReported employees: 5,001-10,000 | São José, Brazil | 5,001-10,000 | Exact match | 2,462 contacts → |
“A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MSS Securitymsssecurity.com.au HQ: Parramatta, AustraliaReported employees: 5,001-10,000 | Parramatta, Australia | 5,001-10,000 | Exact match | 2,010 contacts → |
“The MSS Security Group (MSS) comprising MSS Security, MSS Strategic Medical & Rescue and SDS is unrivalled in its experience, capability and reputation.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Paragon Systems INCparasys.com HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,949 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | شركه حراسات امنيهwa.me HQ: جده, Saudi ArabiaReported employees: Not recorded | جده, Saudi Arabia | Not recorded | Exact match | 1,699 contacts → |
“نحن شركه تعمل في مجال الحراسات والخدمات الامنيه نقدم افضل الخدمات:*مشرفين امن *حراس امن *سيارات امنيه” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Admiral Security Servicesadmiralsecurity.com HQ: Bethesda, MD, United StatesReported employees: 5,001-10,000 | Bethesda, MD, United States | 5,001-10,000 | Exact match | 1,441 contacts → |
“Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | World Securityworldsecurity.ae HQ: Dubai, United Arab EmiratesReported employees: 1,001-5,000 | Dubai, United Arab Emirates | 1,001-5,000 | Exact match | 1,398 contacts → |
“World Security being a Semi Govt Organization provides specialist turnkey security solutions to the local market and beyond, as well as the Dubai World Group.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Guardsmarkguardsmark.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | First Security Group LLCfirstsg.com HQ: Dubai, United Arab EmiratesReported employees: 5,001-10,000 | Dubai, United Arab Emirates | 5,001-10,000 | Exact match | 1,374 contacts → |
“First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Protectasprotectas.com HQ: Lausanne, SwitzerlandReported employees: 1,001-5,000 | Lausanne, Switzerland | 1,001-5,000 | Exact match | 1,318 contacts → |
“Protectas belongs to the Swedish Securitas AB, the knowledged leader in security (which incidentally is not affiliated with the Swiss company of the same name, Securitas AG).” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gardaworld Federal Servicesgarda-federal.com HQ: Arlington, VA, United StatesReported employees: 1,001-5,000 | Arlington, VA, United States | 1,001-5,000 | Exact match | 1,260 contacts → |
“GardaWorld Federal” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Banque Populaire Bourgogne Franche-Combanquepopulaire.fr HQ: Dijon, FranceReported employees: 1,001-5,000 | Dijon, France | 1,001-5,000 | Exact match | 1,233 contacts → |
“BANQUE POPULAIRE BOURGOGNE FRANCHE-COM is a Security and Investigations company located in 14 BOULEVARD DE LA TREMOUILLE, DIJON, Burgundy, France.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SOS Security LLCsossecurity.com HQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,118 contacts → |
“Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Andrews Internationalandrewsinternational.com HQ: Burbank, CA, United StatesReported employees: 10001+ | Burbank, CA, United States | 10001+ | Exact match | 1,081 contacts → |
“Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | St. Moritz Security Services, INCsmssi.com HQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Brosnan Risk Consultantsbrosnanrisk.com HQ: Pearl River, NY, United StatesReported employees: 5,001-10,000 | Pearl River, NY, United States | 5,001-10,000 | Exact match | 1,050 contacts → |
“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | KK Security Ltd, A Gardaworld Companykksecurity.com HQ: Westlands, KenyaReported employees: 1,001-5,000 | Westlands, Kenya | 1,001-5,000 | Exact match | 1,008 contacts → |
“World-renowned expertise, local solutions.” Recorded description excerpt · October 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 6,929 company matches
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Government security contractors: dataset insights
October 1, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
6,895 records in the displayed employee bands.
34 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 6,929 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: October 1, 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 ↗
Government security contractors by location
41 lists · largest firstEvery Government security contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Government security contractors based in the United States2,809
- Government security contractors based in the United Kingdom799
- Government security contractors based in France657
- Government security contractors based in Brazil590
- Government security contractors based in Germany461
- Government security contractors based in Canada429
- Government security contractors based in the Netherlands329
- Government security contractors based in Italy311
- Government security contractors based in Australia310
- Government security contractors based in South Africa296
- Government security contractors based in India280
- Government security contractors based in Mexico268
- Government security contractors based in Argentina166
- Government security contractors based in Spain133
- Government security contractors based in Switzerland104
- Government security contractors based in Colombia84
- Government security contractors based in the United Arab Emirates76
- Government security contractors based in Poland71
- Government security contractors based in Belgium58
- Government security contractors based in Sweden50
- Government security contractors based in New Zealand42
- Government security contractors based in Greece38
- Government security contractors based in Israel38
- Government security contractors based in Ireland25
Cities
- Government security contractors based in London, United Kingdom263
- Government security contractors based in Sao Paulo, Brazil136
- Government security contractors based in New York, United States89
- Government security contractors based in Los Angeles, United States88
- Government security contractors based in Houston, United States75
- Government security contractors based in Paris, France73
- Government security contractors based in Toronto, Canada73
- Government security contractors based in Johannesburg, South Africa53
- Government security contractors based in Miami, United States50
- Government security contractors based in Chicago, United States48
- Government security contractors based in Berlin, Germany46
- Government security contractors based in Dallas, United States44
- Government security contractors based in Atlanta, United States40
- Government security contractors based in Dubai, United Arab Emirates39
- Government security contractors based in Melbourne, Australia35
- Government security contractors based in Washington, United States34
- Government security contractors based in Las Vegas, United States26
Questions about this company list
What does Exact match mean for government security contractors?
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 government security contractors did RevenueBase find worldwide?
The saved snapshot records 6,929 matching company records, 223,906 tracked contacts and 19,933 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: October 1, 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 government security contractors worldwide. Snapshot: October 1, 2026. https://revenuebase.ai/companies/browse/government-security-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗