Company lists · Data refreshed October 2026

Top 25 Defense engineering firms based in the United States

RevenueBase identified 559 company matches for defense engineering firms associated with the United States as of October 2026 and tracks 207,788 professional contacts across them, including 11,660 with verified work emails. Huntsville is the largest hub.

This list covers company matches for defense engineering 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 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
559Companies
207,788Contacts tracked
11,660Verified emails
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The 25 largest defense engineering firms based in the United States

Ranked by team size
Top 25 of 559 company matches for defense engineering firms 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchFalls Church, VA, United StatesHQ recorded Oct 11, 202610001+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
2Exact matchArlington, VA, United StatesHQ recorded Oct 11, 202610001+44,552 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3Exact matchFalls Church, VA, United StatesHQ recorded Oct 11, 202610001+13,705 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 · Oct 11, 2026 · View company records in RevenueBase
4Exact matchReston, VA, United StatesHQ recorded Oct 11, 202610001+9,254 contacts →

Exact match

“From Gulfstream business jets and combat vehicles to nuclear-powered submarines and communications systems, people around the world depend on our products and services for their…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5Exact matchOrange County, GA, United StatesHQ recorded Oct 11, 20261,001-5,0006,815 contacts →

Exact match

“Anduril is not a traditional defense contractor.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6Exact matchArlington, VA, United StatesHQ recorded Oct 11, 20265,001-10,0006,372 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
7Exact matchAlbuquerque, NM, United StatesHQ recorded Oct 11, 20261,001-5,0002,805 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8Exact matchSan Diego, CA, United StatesHQ recorded Oct 11, 20261,001-5,0002,712 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9Exact matchSeattle, WA, United StatesHQ recorded Oct 11, 2026n/a2,454 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 · Oct 11, 2026 · View company records in RevenueBase
10Exact matchHaslet, TX, United StatesHQ recorded Oct 11, 20261,001-5,0002,088 contacts →

Exact match

“Textron Systems has been providing innovative solutions to the defense, homeland security and aerospace communities for more than 50 years.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11Exact matchAlexandria, VA, United StatesHQ recorded Oct 11, 20261,001-5,0002,015 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
12Exact matchSt. Petersburg, United StatesHQ recorded Oct 11, 20265,001-10,0001,731 contacts →

Exact match

“General Dynamics Ordnance and Tactical Systems provides the U.S.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13Exact matchClarksburg, MD, United StatesHQ recorded Oct 11, 20261,001-5,0001,516 contacts →

Exact match

“Thales Defense & Security, Inc.(TDSI) Headquartered in Clarksburg, MD, Thales Defense & Security, Inc.(TDSI) is a U.S.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14Exact matchMclean, VA, United StatesHQ recorded Oct 11, 20261,001-5,0001,404 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
15Exact matchAlexandria, VA, United StatesHQ recorded Oct 11, 20261,001-5,0001,211 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
16Exact matchChantilly, VA, United StatesHQ recorded Oct 11, 20261,001-5,000888 contacts →

Exact match

“Arcfield was purpose-built to protect the nation and its allies through innovations in systems engineering and integration, space and mission launch assurance, cybersecurity and…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17Exact matchLexington Park, MD, United StatesHQ recorded Oct 11, 20261,001-5,000767 contacts →

Exact match

“Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation’s most critical defense programs.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18Exact matchAnchorage, AK, United StatesHQ recorded Oct 11, 2026201-500674 contacts →

Exact match

“Tyonek Native Corporation, an Alaska Native Corporation formed under the Alaska Native Claims Settlement Act (ANCSA) in 1971.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19Exact matchArlington, VA, United StatesHQ recorded Oct 11, 2026501-1,000626 contacts →

Exact match

“At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20Exact matchAurora, CO, United StatesHQ recorded Oct 11, 2026501-1,000576 contacts →

Exact match

“We will be the first to identify and solve the Intelligence and Defense Communities’ toughest engineering and operational problems by establishing a true partnership with our…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21Exact matchArlington, VA, United StatesHQ recorded Oct 11, 20261,001-5,000560 contacts →

Exact match

“BlueHalo is now part of AV, a global defense technology leader built for scale, driven by innovation, and delivering #AllDomainDominance across every domain of modern…”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22Exact matchShelton, CT, United StatesHQ recorded Oct 11, 20261,001-5,000473 contacts →

Exact match

“STATE-OF-THE-ART, QUALITY, COST-OPTIMIZED SOLUTIONS Founded in 1947, Butler Aerospace & Defense/BAA is a U.S.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23Exact matchInglewood, CA, United StatesHQ recorded Oct 11, 2026501-1,000471 contacts →

Exact match

“Our mission is to give the warfighters we depend on, the critical equipment they depend on.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Oct 11, 20261,001-5,000455 contacts →

Exact match

“Gryphon Technologies - now part of ManTech, is headquartered in Washington DC.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25Exact matchHuntsville, AL, United StatesHQ recorded Oct 11, 2026501-1,000425 contacts →

Exact match

“INTUITIVE® is a professional engineering and systems integration firm delivering rapid, missionfocused solutions for defense, government, and commercial customers.”

Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

Showing 25 of 559 defense engineering firms based in the United States

See the full list, filter by size, metro and specialty, and access 11,660 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Defense engineering firms based in the United States at a glance

As of Oct 11, 2026
5.6%Verified-email coverage
371.7Average contacts per company
11-50Median size (employees)
7.7%Largest-city concentration · Huntsville
Oct 11, 2026Page data refreshed

Companies by employee count

1-10
171
11-50
175
51-200
115
201-500
48
501-1,000
13
1,001-5,000
29
5,001-10,000
2
10001+
6

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 559 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 engineering 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 11,660 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 engineering 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 “defense engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense engineering firms are there based in the United States?

RevenueBase identified 559 company matches for defense engineering firms 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 engineering firms?

Huntsville leads with 43 company records, followed by Arlington (17) and San Diego (12).

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 11,660 professional contacts with verified work emails tracked across these 559 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.