Company lists · Data refreshed September 2026

Top 25 Defense technology consulting firms based in the United States

RevenueBase identified 3,165 defense technology consulting firms headquartered in the United States as of September 2026 and tracks 586,234 professional contacts across them, including 46,995 with verified work emails. Washington is the largest hub.

This list covers defense technology consulting firms headquartered in the United States, 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 28, 2026.

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 28, 2026 86% judged on-target in blind review
3,165Companies
586,234Contacts tracked
46,995Verified emails
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The 25 largest defense technology consulting firms based in the United States

Ranked by team size
Top 25 of 3,165 defense technology consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to defense technology consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceBethesda, MD, United StatesHQ checked Sep 28, 202610001+95,871 contacts →

Indirect evidence

“The world relies on what we do.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceFalls Church, VA, United StatesHQ checked Sep 28, 202610001+74,984 contacts →

Indirect evidence

“We are a close-knit community of big thinkers collaborating to keep the world safe.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceArlington, VA, United StatesHQ checked Sep 28, 202610001+42,937 contacts →

Partial evidence

“Raytheon, an RTX business, creates next-generation defense solutions that are smarter, faster and better than previously thought possible.”

Source: RevenueBase Database · checked Sep 28, 2026
4Strong evidenceMelbourne, FL, United StatesHQ checked Sep 28, 202610001+24,855 contacts →

Strong evidence

“L3Harris Technologies is the Trusted Disruptor in the defense industry.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceFalls Church, VA, United StatesHQ checked Sep 28, 202610001+23,974 contacts →

Partial 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 28, 2026
6Partial evidenceChantilly, VA, United StatesHQ checked Sep 28, 202610001+19,456 contacts →

Partial 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 28, 2026
7Partial evidenceReston, VA, United StatesHQ checked Sep 28, 202610001+19,221 contacts →

Partial evidence

“At CACI International Inc (NYSE: CACI), our talented and dynamic employees are ever vigilant in delivering distinctive expertise and technology to meet our customers’ greatest…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceFalls Church, VA, United StatesHQ checked Sep 28, 202610001+12,898 contacts →

Indirect evidence

“Improving the future and protecting lives is an ambitious mission, but it’s what we do.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceReston, VA, United StatesHQ checked Sep 28, 202610001+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 28, 2026
10Indirect evidenceMclean, VA, United StatesHQ checked Sep 28, 202610001+9,964 contacts →

Indirect evidence

“DynCorp International is now part of Amentum.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceHerndon, VA, United StatesHQ checked Sep 28, 20265,001-10,0009,697 contacts →

Partial evidence

“MANTECH is more than a technology company.”

Source: RevenueBase Database · checked Sep 28, 2026
12Strong evidenceArlington, VA, United StatesHQ checked Sep 28, 20265,001-10,0005,980 contacts →

Strong evidence

“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.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceReston, VA, United StatesHQ checked Sep 28, 20265,001-10,0004,542 contacts →

Indirect evidence

“ASRC Federal’s employees provide solutions for more than 30 U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceAlbuquerque, NM, United StatesHQ checked Sep 28, 20261,001-5,0002,733 contacts →

Partial evidence

“Applied Research Associates, Inc.(ARA) is the company that government and industry turn to for innovative technologies and solutions to problems that improve our safety, security…”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceCA, United StatesHQ checked Sep 28, 20261,001-5,0002,699 contacts →

Partial evidence

“Anduril is not a traditional defense contractor.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceSan Diego, CA, United StatesHQ checked Sep 28, 20261,001-5,0002,559 contacts →

Partial evidence

“At Kratos, we deliver affordable, disruptive technologies that enable real-world readiness for national security.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 2026n/a2,352 contacts →

Partial evidence

“Aegis provides custom engineering and technology development services to a broad array of clients, including Fortune 100 companies, the U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceAlexandria, VA, United StatesHQ checked Sep 28, 20261,001-5,0002,092 contacts →

Indirect evidence

“Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceAlexandria, VA, United StatesHQ checked Sep 28, 20261,001-5,0001,920 contacts →

Partial evidence

“Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 28, 20261,001-5,0001,917 contacts →

Indirect evidence

“Scientific Research Corporation is an advanced engineering company that was founded in 1988 to provide innovative solutions to the U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceMclean, VA, United StatesHQ checked Sep 28, 20261,001-5,0001,899 contacts →

Indirect 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 28, 2026
22Partial evidenceAlexandria, VA, United StatesHQ checked Sep 28, 20261,001-5,0001,898 contacts →

Partial evidence

“DCS delivers advanced technology and management solutions to Government agencies in the national security sector.”

Source: RevenueBase Database · checked Sep 28, 2026
23Strong evidenceReston, VA, United StatesHQ checked Sep 28, 20261,001-5,0001,859 contacts →

Strong 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 28, 2026
24Indirect evidenceHuntsville, AL, United StatesHQ checked Sep 28, 202610001+1,532 contacts →

Indirect evidence

“Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceLouisville, CO, United StatesHQ checked Sep 28, 20261,001-5,0001,459 contacts →

Partial evidence

“Headquartered in Colorado, Sierra Space is a mission-proven Defense Tech company delivering satellite platforms, critical subsystems, reusable spaceplanes, hypersonic…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 3,165 defense technology consulting firms based in the United States

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Defense technology consulting firms based in the United States at a glance

As of Sep 28, 2026
8.0%Verified-email coverage
185.2Average contacts per company
11-50Median size (employees)
4.9%Largest-city concentration · Washington
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
1,361
11-50
864
51-200
612
201-500
188
501-1,000
67
1,001-5,000
46
5,001-10,000
5
10001+
20

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 3,165 companies.

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 defense technology consulting firms, 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.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “defense technology consulting firms”. 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 defense technology consulting firms), 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 defense technology consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 46,995 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 28, 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.

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 defense technology consulting firms, 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 defense technology consulting firms are there based in the United States?

RevenueBase identified 3,165 defense technology consulting firms headquartered in the United States 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?

Lockheed Martin, headquartered in Bethesda, tops this list with the largest team on record.

Which city has the most defense technology consulting firms?

Washington leads with 156 headquartered companies, followed by Huntsville (124) and Arlington (117).

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 46,995 verified decision-maker contacts tracked across these 3,165 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 28, 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.