Company lists · Data refreshed September 2026

Top 25 Government IT companies worldwide

Name: Government IT companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 20,387 companies tracked

RevenueBase identified 20,387 government IT companies worldwide as of September 2026 and tracks 604,527 professional contacts across them, including 134,519 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers government IT 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 19, 2026. Country and city lists for government IT 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

20,387Companies

604,527Contacts tracked

134,519Verified emails

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The 25 largest government IT companies worldwide

Ranked by team size

Top 25 of 20,387 government IT companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to government IT companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Leidos	Partial evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	10001+	27,416 contacts →
	Partial evidence “Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.” Source: RevenueBase Database · checked Sep 19, 2026
2	General Dynamics Information Technology	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 19, 2026	10001+	23,974 contacts →
	Indirect evidence “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
3	Parsons Corporation	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 19, 2026	10001+	19,456 contacts →
	Indirect evidence “Founded in 1944, Parsons Corporation, a digitally enabled solutions provider, is focused on creating the future of the defense, intelligence, and critical infrastructure markets.” Source: RevenueBase Database · checked Sep 19, 2026
4	Peraton	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	10001+	10,793 contacts →
	Indirect evidence “At Peraton, we're at the forefront of delivering the next big thing every day.” Source: RevenueBase Database · checked Sep 19, 2026
5	Mantech	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 19, 2026	5,001-10,000	9,697 contacts →
	Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 19, 2026
6	Accenture Federal Services	Partial evidence	Arlington, VA, United StatesHQ checked Sep 19, 2026	10001+	9,125 contacts →
	Partial evidence “We power reinvention across the US federal government to help agencies deliver greater outcomes using proven commercial solutions, mission expertise, and new technologies – cloud…” Source: RevenueBase Database · checked Sep 19, 2026
7	ELM Company	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 19, 2026	1,001-5,000	6,982 contacts →
	Indirect evidence “Elm is the leading provider of innovative secure services & solutions to both public and private sectors in Saudi Arabia.” Source: RevenueBase Database · checked Sep 19, 2026
8	Tyler Technologies	Indirect evidence	Plano, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	6,842 contacts →
	Indirect evidence “Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.” Source: RevenueBase Database · checked Sep 19, 2026
9	Datacom	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	5,001-10,000	5,958 contacts →
	Indirect evidence “Customer focused values.” Source: RevenueBase Database · checked Sep 19, 2026
10	Shared Services Canada Services Partagés Canada	Strong evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	5,001-10,000	4,650 contacts →
	Strong evidence “Shared Services Canada is modernizing how the Government of Canada manages its information technology (IT) infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
11	Cegeka	Indirect evidence	Hasselt, BelgiumHQ checked Sep 19, 2026	5,001-10,000	4,551 contacts →
	Indirect evidence “The digital world moves fast.” Source: RevenueBase Database · checked Sep 19, 2026
12	Asrc Federal	Indirect evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	5,001-10,000	4,542 contacts →
	Indirect evidence “ASRC Federal’s employees provide solutions for more than 30 U.S.” Source: RevenueBase Database · checked Sep 19, 2026
13	Carahsoft	Strong evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,945 contacts →
	Strong evidence “Carahsoft is The Trusted IT Solutions Provider®, supporting Federal, State, Local Government, Education, Healthcare and Private Sector industries.” Source: RevenueBase Database · checked Sep 19, 2026
14	Quest Software	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,206 contacts →
	Indirect evidence “At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: RevenueBase Database · checked Sep 19, 2026
15	EJADA	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 19, 2026	1,001-5,000	3,050 contacts →
	Indirect evidence “ejada is a leading technology solutions provider in the Middle East and North Africa (MENA) region, headquartered in Saudi Arabia since 2005.” Source: RevenueBase Database · checked Sep 19, 2026
16	LMI	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,580 contacts →
	Indirect evidence “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Source: RevenueBase Database · checked Sep 19, 2026
17	Govcio	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,101 contacts →
	Strong evidence “GovCIO was founded with a single purpose- to transform government IT.” Source: RevenueBase Database · checked Sep 19, 2026
18	Diyar United Company	Indirect evidence	Kuwait City, KuwaitHQ checked Sep 19, 2026	1,001-5,000	1,980 contacts →
	Indirect evidence “Since its inception in 1980, Diyar United has been in the business of providing innovative Information Technology solutions, products and services in state of Kuwait.” Source: RevenueBase Database · checked Sep 19, 2026
19	American Systems	Partial evidence	Mclean, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,899 contacts →
	Partial evidence “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Source: RevenueBase Database · checked Sep 19, 2026
20	DCS Corp	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,898 contacts →
	Partial evidence “DCS delivers advanced technology and management solutions to Government agencies in the national security sector.” Source: RevenueBase Database · checked Sep 19, 2026
21	SOSI	Partial evidence	Reston, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,859 contacts →
	Partial evidence “Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private, founder-led defense and government solutions firm specializing in advanced technology systems and mission…” Source: RevenueBase Database · checked Sep 19, 2026
22	Perspecta	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 19, 2026	10001+	1,753 contacts →
	Indirect evidence “At Perspecta we question, we seek and we solve.” Source: RevenueBase Database · checked Sep 19, 2026
23	DMI	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,683 contacts →
	Indirect evidence “DMI is a leading provider of digital services and technology solutions with a focus on end-to-end managed services, including managed mobility, cloud, cybersecurity, network…” Source: RevenueBase Database · checked Sep 19, 2026
24	National Informatics Centre, Govt Of India	Indirect evidence	United StatesHQ checked Sep 19, 2026	501-1,000	1,634 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	ASM Research	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,568 contacts →
	Indirect evidence “ASM Research, an Accenture Federal Services Company, is an information solutions integrator and a leading provider of innovative technology solutions and advanced analytical…” Source: RevenueBase Database · checked Sep 19, 2026

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: government IT 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 government IT companies.
Partial evidence: Its own public description names part of government IT companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government IT 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 20,387 government IT companies worldwide

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Government IT companies worldwide at a glance

As of Sep 19, 2026

22.3%Verified-email coverage

29.7Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

9,219

11-50

7,223

51-200

2,702

201-500

727

501-1,000

230

1,001-5,000

169

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 government IT 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: Every country. Country and city lists for government IT companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “government IT 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 government IT 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 government IT 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, 134,519 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 on September 19, 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.

Government IT companies by location

112 lists · largest first

Every Government IT companies 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 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 government IT 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 government IT companies are there worldwide?

RevenueBase identified 20,387 government IT 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?

Leidos, headquartered in Reston, tops this list with the largest team on record.

Which country has the most government IT companies?

The United States leads with 6,552 companies, followed by India (1,991) and Brazil (810). Every government IT companies list by country and city is linked on this page.

Which city has the most government IT companies?

Washington leads with 222 headquartered companies, followed by Dubai (195) and London (181).

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 134,519 verified decision-maker contacts tracked across these 20,387 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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.