Company lists · Data refreshed October 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 Oct 11, 2026 3,065 companies tracked

RevenueBase identified 3,065 company matches for defense IT solution providers associated with the United States as of October 2026 and tracks 425,076 professional contacts across them, including 58,714 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 October 11, 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 Oct 11, 2026 How this list was built

3,065Companies

425,076Contacts tracked

58,714Verified emails

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

Ranked by team size

Top 25 of 3,065 company matches for defense IT solution providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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, VA, United StatesHQ recorded Oct 11, 2026	10001+	76,380 contacts →
	Exact match “We are a close-knit community of big thinkers collaborating to keep the world safe.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2	L3harris Technologies	Exact match	Melbourne, FL, United StatesHQ recorded Oct 11, 2026	10001+	25,850 contacts →
	Exact match “L3Harris Technologies is the Trusted Disruptor in the defense industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3	General Dynamics Information Technology	Exact match	Falls Church, VA, United StatesHQ recorded Oct 11, 2026	10001+	24,883 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 · Oct 11, 2026 · View company records in RevenueBase
4	Parsons Corporation	Exact match	Chantilly, VA, United StatesHQ recorded Oct 11, 2026	10001+	20,226 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 · Oct 11, 2026 · View company records in RevenueBase
5	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Oct 11, 2026	10001+	14,972 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 · Oct 11, 2026 · View company records in RevenueBase
6	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Oct 11, 2026	10001+	11,671 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 · Oct 11, 2026 · View company records in RevenueBase
7	Peraton	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	10001+	10,966 contacts →
	Exact match “At Peraton, we're at the forefront of delivering the next big thing every day.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Oct 11, 2026	5,001-10,000	9,912 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 · Oct 11, 2026 · View company records in RevenueBase
9	Harris Corporation	Exact match	Melbourne, FL, United StatesHQ recorded Oct 11, 2026	10001+	6,459 contacts →
	Exact match “At Harris, our shared set of values, skills and experience have shaped some of the most remarkable communications technologies and cutting-edge innovations in the world.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	Leonardo DRS	Exact match	Arlington, VA, United StatesHQ recorded Oct 11, 2026	5,001-10,000	6,372 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 · Oct 11, 2026 · View company records in RevenueBase
11	Sierra Nevada Corporation	Exact match	Sparks, NV, United StatesHQ recorded Oct 11, 2026	1,001-5,000	4,673 contacts →
	Exact match “SNC is a trusted global leader in aerospace and national security.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12	Asrc Federal	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	5,001-10,000	4,577 contacts →
	Exact match “ASRC Federal’s employees provide solutions for more than 30 U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	Quest Software	Exact match	Austin, TX, United StatesHQ recorded Oct 11, 2026	1,001-5,000	3,329 contacts →
	Exact match “At Quest Software, we help organizations build modern, trusted foundations for AI.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14	Modern Technology Solutions, Inc. Mtsi	Exact match	Alexandria, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,015 contacts →
	Exact match “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15	DCS Corp	Exact match	Alexandria, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,919 contacts →
	Exact match “DCS delivers advanced technology and management solutions to Government agencies in the national security sector.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16	SOSI	Exact match	Reston, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,842 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	ASM Research	Exact match	Fairfax, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,668 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 · Oct 11, 2026 · View company records in RevenueBase
18	DMI	Exact match	Mclean, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,595 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 · Oct 11, 2026 · View company records in RevenueBase
19	Dynetics, INC	Exact match	Huntsville, AL, United StatesHQ recorded Oct 11, 2026	10001+	1,449 contacts →
	Exact match “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Government Acquisitions	Exact match	Cincinnati, OH, United StatesHQ recorded Oct 11, 2026	n/a	1,438 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 · Oct 11, 2026 · View company records in RevenueBase
21	Qinetiq US	Exact match	Mclean, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,404 contacts →
	Exact match “For over 60 years, QinetiQ US has been providing world-class technology development, engineering research and development and revolutionary products to the defense, security, and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	SMX	Exact match	Hollywood, MD, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,386 contacts →
	Exact match “SMX is a global technology and advanced engineering provider specializing in Cloud Solutions, C5ISR, and Advanced Engineering / IT.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	COLSA	Exact match	Huntsville, AL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,326 contacts →
	Exact match “COLSA Corporation is an engineering and support services company founded in 1980.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	VT Group VTG	Exact match	Alexandria, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,211 contacts →
	Exact match “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Imperva	Exact match	Austin, TX, United StatesHQ recorded Oct 11, 2026	10001+	1,166 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Oct 11, 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 3,065 defense IT solution providers based in the United States

See the full list, filter by size, metro and specialty, and access 58,714 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 Oct 11, 2026

13.8%Verified-email coverage

138.7Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · Washington

Oct 11, 2026Page data refreshed

Companies by employee count

1-10

1,096

11-50

1,026

51-200

626

201-500

181

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 3,065 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 58,714 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 11, 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 3,065 company matches for defense IT solution providers associated with the United States 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?

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 87 company records, followed by Reston (76) and Herndon (71).

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 58,714 professional contacts with verified work emails tracked across these 3,065 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 11, 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.