Company lists · Data refreshed November 2026

Top 25 Defense IT solution providers based in the United States

Name: Defense IT solution providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 12,145 companies tracked

RevenueBase identified 12,145 company matches for defense IT solution providers associated with the United States as of November 2026 and tracks 751,842 professional contacts across them, including 159,264 with verified work emails. Washington is the largest hub.

This list covers company matches for defense IT solution providers 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 November 6, 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 Nov 6, 2026 How this list was built

12,145Companies

751,842Contacts tracked

159,264Verified emails

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The 25 largest defense IT solution providers based in the United States

Ranked by team size

Top 25 of 12,145 company matches for defense IT solution providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Northrop Grumman	Exact match	Falls Church, MD, United StatesHQ recorded Nov 6, 2026	10001+	77,937 contacts →
	Exact match “We are a close-knit community of big thinkers collaborating to keep the world safe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	SAIC	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	10001+	34,914 contacts →
	Exact match “SAIC® is a premier mission integrator focused on advancing the power of technology and innovation to serve and protect our world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Leidos	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	10001+	29,226 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 · Nov 6, 2026 · View company records in RevenueBase
4	L3harris Technologies	Exact match	Melbourne, FL, United StatesHQ recorded Nov 6, 2026	10001+	26,341 contacts →
	Exact match “L3Harris Technologies is the Trusted Disruptor in the defense industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	General Dynamics Information Technology	Exact match	Falls Church, VA, United StatesHQ recorded Nov 6, 2026	10001+	25,406 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 · Nov 6, 2026 · View company records in RevenueBase
6	Parsons Corporation	Exact match	Chantilly, VA, United StatesHQ recorded Nov 6, 2026	10001+	20,831 contacts →
	Exact match “Founded in 1944, Parsons Corporation, a digitally enabled solutions provider, is focused on creating the future of the defense, intelligence, and critical infrastructure markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Caci International INC	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	10001+	20,334 contacts →
	Exact match “CACI International Inc (NYSE: CACI) is a technology-first national security company that expands the limits of national security through innovation, discipline, and operational…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Nov 6, 2026	10001+	15,414 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	BAE Systems, INC	Exact match	Falls Church, VA, United StatesHQ recorded Nov 6, 2026	10001+	13,979 contacts →
	Exact match “Improving the future and protecting lives is an ambitious mission, but it’s what we do.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Nov 6, 2026	10001+	13,669 contacts →
	Exact match “At CDW, we know how to make technology work so people can do great things.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Guidehouse	Exact match	Mclean, IL, United StatesHQ recorded Nov 6, 2026	10001+	13,603 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 · Nov 6, 2026 · View company records in RevenueBase
12	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	10001+	11,878 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Dyncorp International	Exact match	Mclean, TX, United StatesHQ recorded Nov 6, 2026	10001+	11,406 contacts →
	Exact match “DynCorp International is now part of Amentum.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Peraton	Exact match	Reston, MD, United StatesHQ recorded Nov 6, 2026	10001+	11,210 contacts →
	Exact match “At Peraton, we're at the forefront of delivering the next big thing every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	10,193 contacts →
	Exact match “About Us: At MANTECH, we believe national security demands more than technology-it requires an unwavering dedication to the mission and the warfighters who defend it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Comcast Business	Exact match	Philadelphia, PA, United StatesHQ recorded Nov 6, 2026	10001+	8,837 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Leonardo DRS	Exact match	Arlington, VA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,366 contacts →
	Exact match “Leonardo DRS Inc.(Nasdaq: DRS) is at the forefront of developing transformative defense technologies using its proven agility and delivering innovative solutions for U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Belcan	Exact match	Cincinnati, OH, United StatesHQ recorded Nov 6, 2026	5,001-10,000	5,242 contacts →
	Exact match “Belcan, a Cognizant company is a global supplier of engineering, manufacturing & supply chain, workforce and government IT solutions to customers in the aerospace, defense…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Asrc Federal	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	4,665 contacts →
	Exact match “ASRC Federal’s employees provide solutions for more than 30 U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Presidio	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,274 contacts →
	Exact match “At Presidio, speed and quality meet technology and innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Vectrus	Exact match	Colorado Springs, CO, United StatesHQ recorded Nov 6, 2026	5,001-10,000	3,609 contacts →
	Exact match “About Vectrus For more than 70 years, Vectrus has provided critical mission support for our customers’ toughest operational challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Quest Software	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,432 contacts →
	Exact match “At Quest Software, we help organizations build modern, trusted foundations for AI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	LMI	Exact match	Tysons, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,724 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 · Nov 6, 2026 · View company records in RevenueBase
24	Astreya	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,524 contacts →
	Exact match “Astreya is the leading IT solutions provider for some of the world's most recognizable and innovative organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	AEGIS	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	n/a	2,517 contacts →
	Exact match “Aegis provides custom engineering and technology development services to a broad array of clients, including Fortune 100 companies, the U.S.” Recorded in the RevenueBase company graph · Nov 6, 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 “defense IT solution 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 12,145 defense IT solution providers based in the United States

See the full list, filter by size, metro and specialty, and access 159,264 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Defense IT solution providers based in the United States at a glance

As of Nov 6, 2026

21.2%Verified-email coverage

61.9Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Washington

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

5,080

11-50

4,161

51-200

1,982

201-500

536

501-1,000

174

1,001-5,000

124

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 12,145 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 “defense IT solution 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. 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 159,264 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 6, 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.

Defense IT solution providers 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 “defense IT solution providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense IT solution providers are there based in the United States?

RevenueBase identified 12,145 company matches for defense IT solution providers associated with the United States 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?

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

Which city has the most defense IT solution providers?

Washington leads with 290 company records, followed by New York (249) and Reston (198).

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 159,264 professional contacts with verified work emails tracked across these 12,145 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 6, 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.