Company lists · Data refreshed September 2026

Top 25 Government IT consulting firms based in the United States

Name: Government IT consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 9,349 companies tracked

RevenueBase identified 9,349 company matches for government IT consulting firms associated with the United States as of September 2026 and tracks 299,803 professional contacts across them, including 81,776 with verified work emails. Washington is the largest hub.

This list covers company matches for government IT consulting firms associated with the United States, 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 September 21, 2026.

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 Sep 21, 2026 How this list was built

9,349Companies

299,803Contacts tracked

81,776Verified emails

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The 25 largest government IT consulting firms based in the United States

Ranked by team size

Top 25 of 9,349 company matches for government IT consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Leidos	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	10001+	27,416 contacts →
	Exact match “Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	General Dynamics Information Technology	Exact match	Falls Church, VA, United StatesHQ recorded Sep 21, 2026	10001+	23,974 contacts →
	Exact match “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	9,697 contacts →
	Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	SHI International Corp	Exact match	Somerset, NJ, United StatesHQ recorded Sep 21, 2026	5,001-10,000	6,734 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Asrc Federal	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	4,542 contacts →
	Exact match “ASRC Federal’s employees provide solutions for more than 30 U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Quest Software	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,206 contacts →
	Exact match “At Quest Software, we help organizations build modern, trusted foundations for AI.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	LMI	Exact match	Tysons, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,580 contacts →
	Exact match “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,222 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Perspecta	Exact match	Chantilly, VA, United StatesHQ recorded Sep 21, 2026	10001+	1,753 contacts →
	Exact match “At Perspecta we question, we seek and we solve.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	DMI	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,683 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	ASM Research	Exact match	Fairfax, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,568 contacts →
	Exact match “ASM Research, an Accenture Federal Services Company, is an information solutions integrator and a leading provider of innovative technology solutions and advanced analytical…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Government Acquisitions	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 21, 2026	n/a	1,440 contacts →
	Exact match “Government Acquisitions, LLC (GAI) stands at the forefront of a transformative era, where artificial intelligence is reshaping our world and the stakes have never been higher.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	V Group INC	Exact match	Cranbury, NJ, United StatesHQ recorded Sep 21, 2026	n/a	1,347 contacts →
	Exact match “Since V Group Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Trace3	Exact match	Irvine, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,345 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	22nd Century Technologies INC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	1,234 contacts →
	Exact match “22nd Century Technologies Inc,(22nd) is a mid-size Service Integrator, focused on providing IP enabled managed services and solutions to Federal, State and Local governments.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	V-Soft Consulting Group, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,221 contacts →
	Exact match “V-Soft Consulting, an innovative corporation specializing in Information Technology consulting; including staffing, digital, and infrastructure solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	GDT	Exact match	Dallas, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	1,032 contacts →
	Exact match “As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	PPC	Exact match	Trevose, PA, United StatesHQ recorded Sep 21, 2026	201-500	979 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	The MIL Corporation	Exact match	Bowie, MD, United StatesHQ recorded Sep 21, 2026	501-1,000	941 contacts →
	Exact match “Established in 1980, MIL provides innovative cyber, engineering, financial, and information technology services to the federal government.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Quantum SKY	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	872 contacts →
	Exact match “Quantum Sky is a mission technology company that builds secure AI, cyber, cloud, and quantum capabilities for defense, intelligence, and federal civilian agencies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Iron BOW Technologies	Exact match	Herndon, VA, United StatesHQ recorded Sep 21, 2026	501-1,000	841 contacts →
	Exact match “We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Softpath System, LLC	Exact match	Norcross, GA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	796 contacts →
	Exact match “Softpath System LLC is a global award-winning technology consulting and talent management company catering to commercial and government clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Cogent Infotech	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 21, 2026	501-1,000	786 contacts →
	Exact match “Cogent Infotech is an award-winning global IT consulting firm based in Pittsburgh that provides innovative technology services to Fortune 500 companies, government agencies, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Calibre Systems, INC	Exact match	Alexandria, VA, United StatesHQ recorded Sep 21, 2026	501-1,000	768 contacts →
	Exact match “CALIBRE Systems, Inc.(CALIBRE) is an employee-owned AI transformation company delivering mission focused solutions to Defense, Federal / Civil, and Commercial clients.” Recorded in the RevenueBase company graph · Sep 21, 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 IT consulting firms”. 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 9,349 government IT consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 81,776 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Government IT consulting firms based in the United States at a glance

As of Sep 21, 2026

27.3%Verified-email coverage

32.1Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · Washington

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

4,434

11-50

2,992

51-200

1,392

201-500

339

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,349 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “government IT consulting firms” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 81,776 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 September 21, 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 IT consulting firms by metro

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 IT consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many government IT consulting firms are there based in the United States?

RevenueBase identified 9,349 company matches for government IT consulting firms associated with the United States as of September 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?

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

Which city has the most government IT consulting firms?

Washington leads with 359 company records, followed by New York (221) and Reston (179).

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 81,776 professional contacts with verified work emails tracked across these 9,349 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 September 21, 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.