Company lists · Data refreshed November 2026

Top 25 Security guard service providers worldwide

Name: Security guard service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 22,114 companies tracked

RevenueBase identified 22,114 company matches for security guard service providers worldwide as of November 2026 and tracks 819,497 professional contacts across them, including 55,220 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for security guard service providers 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 November 5, 2026. Country and city lists for security guard service providers 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

22,114Companies

819,497Contacts tracked

55,220Verified emails

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The 25 largest security guard service providers worldwide

Ranked by team size

Top 25 of 22,114 company matches for security guard service providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	G4s	Exact match	London, United KingdomHQ recorded Nov 5, 2026	10001+	86,236 contacts →
	Exact match “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 in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Allied Universal	Exact match	Irvine, IL, United StatesHQ recorded Nov 5, 2026	10001+	66,203 contacts →
	Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Prosegur	Exact match	Madrid, SpainHQ recorded Nov 5, 2026	10001+	46,086 contacts →
	Exact match “50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Securitas Security Services Usa, INC	Exact match	Parsippany, MI, United StatesHQ recorded Nov 5, 2026	10001+	40,551 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Gocil Tecnologia EM Segurança E Serviços	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	10001+	8,791 contacts →
	Exact match “One of the largest companies in the professional services and security markets in Brazil.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Segurpro	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	10001+	5,254 contacts →
	Exact match “A SegurPro é o próximo passo em segurança privada.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Certis	Exact match	SingaporeHQ recorded Nov 5, 2026	10001+	5,040 contacts →
	Exact match “Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Paladin Security Group LTD	Exact match	Burnaby, BC, CanadaHQ recorded Nov 5, 2026	10001+	4,808 contacts →
	Exact match “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 in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Grupo Haganá	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	10001+	4,705 contacts →
	Exact match “O que é trabalhar no Grupo Haganá?” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 5, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Securitas France	Exact match	Issy-les-moulineaux, FranceHQ recorded Nov 5, 2026	10001+	4,112 contacts →
	Exact match “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	CSC	Exact match	Northridge, CA, United StatesHQ recorded Nov 5, 2026	10001+	4,090 contacts →
	Exact match “Contemporary Services Corporation (CSC) is recognized worldwide as the pioneer, expert and only employee owned company in the crowd management field.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Unemployed	Exact match	St. Petersburg, FL, United StatesHQ recorded Nov 5, 2026	n/a	4,040 contacts →
	Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Inter-Con Security	Exact match	Pasadena, CA, United StatesHQ recorded Nov 5, 2026	10001+	3,921 contacts →
	Exact match “Everywhere Security Matters™ Inter-Con is one of the largest and fastest-growing physical security and risk management companies in the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Liderman	Exact match	Lima, PeruHQ recorded Nov 5, 2026	10001+	3,635 contacts →
	Exact match “Somos la empresa de seguridad de mayor prestigio en el Perú" Comenzamos en el año 1989, con solo 4 hombres de Seguridad, que creyeron en nuestro estilo de liderazgo y decidieron…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Grupo GR	Exact match	São Paulo, BrazilHQ recorded Nov 5, 2026	10001+	3,132 contacts →
	Exact match “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 in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Securitas Sverige AB	Exact match	Stockholm, SwedenHQ recorded Nov 5, 2026	5,001-10,000	3,053 contacts →
	Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Orsegups Participações S A	Exact match	São José, BrazilHQ recorded Nov 5, 2026	5,001-10,000	2,635 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 · Nov 5, 2026 · View company records in RevenueBase
19	Andy Frain Services	Exact match	Aurora, IL, United StatesHQ recorded Nov 5, 2026	5,001-10,000	2,393 contacts →
	Exact match “Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Paragon Security	Exact match	Toronto, ON, CanadaHQ recorded Nov 5, 2026	1,001-5,000	2,372 contacts →
	Exact match “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Security Segurança E Serviços	Exact match	São Paulo, BrazilHQ recorded Nov 5, 2026	5,001-10,000	2,369 contacts →
	Exact match “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 in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Pronet Security Services	Exact match	Istanbul, TürkiyeHQ recorded Nov 5, 2026	1,001-5,000	2,367 contacts →
	Exact match “Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Walden Security	Exact match	Chattanooga, VA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	2,341 contacts →
	Exact match “Walden Security is the nation's largest privately held, family-owned and operated, American-owned security company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	MSS Security	Exact match	Parramatta, AustraliaHQ recorded Nov 5, 2026	5,001-10,000	2,182 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 · Nov 5, 2026 · View company records in RevenueBase
25	Everon	Exact match	Irving, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,178 contacts →
	Exact match “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded in the RevenueBase company graph · Nov 5, 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 “security guard service providers”. 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 22,114 security guard service providers worldwide

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Security guard service providers worldwide at a glance

As of Nov 5, 2026

6.7%Verified-email coverage

37.1Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

5,805

11-50

6,435

51-200

4,892

201-500

2,126

501-1,000

1,108

1,001-5,000

1,049

5,001-10,000

199

10001+

167

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 security guard service providers are linked below.
What qualifies: Company records worldwide whose business descriptions match “security guard service providers” 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 55,220 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 November 5, 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.

Security guard service providers by location

88 lists · largest first

Every Security guard service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “security guard service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security guard service providers are there worldwide?

RevenueBase identified 22,114 company matches for security guard service providers worldwide as of November 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?

G4s tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most security guard service providers?

The United States leads with 4,306 companies, followed by the United Kingdom (2,134) and Brazil (1,524). Every security guard service providers list by country and city is linked on this page.

Which city has the most security guard service providers?

London leads with 512 company records, followed by Sao Paulo (313) and New York (146).

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 55,220 professional contacts with verified work emails tracked across these 22,114 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 November 5, 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.