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Top 28 aerospace and defence companies in Washington

Tamtam tracks 28 aerospace and defence companies headquartered in Washington. This list ranks all of them by number of employees on LinkedIn, led by United States Marine Corps, NASA - National Aeronautics and Space Administration and United States Space Force. Their median headcount is 767. Half of them were founded in 1992 or later.

๐Ÿ‡บ๐Ÿ‡ธ Washington28 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
United States Marine Corpsmarines.mil

Provides rapid deployment of combined-arms task forces using naval mobility for power projection on land, sea, and air.

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 78,275 n/a
2
NASA - National Aeronautics and Space Administrationnasa.gov

A pioneering organization pushing the boundaries of space exploration, scientific discovery, and aeronautics research to benefit humanity and improve life on Earth

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 50,817 1958
3
United States Space Forcespaceforce.mil

Organizes, trains, and equips space forces to protect national interests, acquires military space systems, and develops professional doctrine for specialized combatant commands.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 6,087 2019
4
United States Department of the Air Forceaf.mil

A military department of the US Department of Defense that oversees the organization of the United States Air Force and United States Space Force

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 5,392 1947
5
U.S. Naval Research Laboratorynrl.navy.mil

Conducts scientific research with applications for the Department of the Navy, the Defense Department and the nation, driving innovative advances for the U.S. Navy and Marine Corps.

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Washington 3,372 1923
6
Naval Surface Warfare Center (NSWC)navsea.navy.mil

The NAVSEA Warfare Centers deliver innovative technical solutions for the US Navy, focusing on undersea and surface warfare capabilities

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 2,707 1992
7
National Nuclear Security Administration (NNSA)energy.gov

A semi-autonomous agency within the US Department of Energy, dedicated to safeguarding the nation's nuclear stockpile, promoting global security, and addressing emerging challenges

Government Administration ๐Ÿ‡บ๐Ÿ‡ธ Washington 1,701 2000
8
Versar Global Solutionsversar.com

A Washington, DC-based company provides full lifecycle solutions for government and commercial Customers in natural, built, and digital environments worldwide

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 1,603 1969
9
Air Forcelinkedin.com

Specializing in aviation defense, providing air support and protection for national security and military operations Offering expertise in air combat and security strategies

Law Enforcement ๐Ÿ‡บ๐Ÿ‡ธ Washington 840 n/a
10
United States Department of the Air Forceaf.mil

This company is one of the three Military Departments in the US Department of Defense, encompassing the USAF and USSF

Military ๐Ÿ‡บ๐Ÿ‡ธ Washington 840 1947
11
LBSversar.com

Versar Global Solutions provides comprehensive lifecycle solutions for government and commercial clients in natural, built, and digital environments worldwide

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 802 2012
12
Commander, Navy Installations Command (CNIC) HQcnic.navy.mil

The company is responsible for worldwide US Navy shore installation management, ensuring readiness and quality of life programs for military personnel and their families

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 789 2003
13
Fincantieri Marine Groupfincantierimarinegroup.com

Leading US shipbuilder in naval and commercial sectors with 3 shipyards Specializes in building Navy ships, merchant vessels, and aluminum boats

Shipbuilding ๐Ÿ‡บ๐Ÿ‡ธ Washington 780 n/a
14
Metreametrea.aero

Provider of defense capabilities and services, specializing in innovative solutions for various missions including ISR, electromagnetic technologies, and simulations applications

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 767 2016
15
USAF Civil Engineer

The company's core mission is to build, operate, maintain, modernize, and recover installations, developing creative solutions to complex problems worldwide

Civil Engineering ๐Ÿ‡บ๐Ÿ‡ธ Washington 648 1947
16
U.S. Armyarmy.mil

The company builds character in individuals through high ideals, clear guidance, and rigorous education and training in the military

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 535 1776
17
Defense Security Cooperation Agencydsca.mil

Facilitating foreign security forces building capacity to respond to shared challenges, supporting US policy interests through security cooperation programs, and fostering alliances

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 480 1971
18
Gryphon Technologies, Incgryphontechnologies.com

A transformational leader in digital engineering and technical solutions for national security, specializing in research, development, defense systems, cybersecurity, and logistics

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 457 1998
19
Naval Reactorsenergy.gov

Develops and maintains nuclear propulsion plants for the US Navy, ensuring safe and reliable operations through rigorous design practices and operating procedures

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 426 1948
20
F-35 Joint Program Officejsf.mil

The company designs affordable next generation strike aircraft weapon systems for military branches and allies, utilizing cutting-edge technologies for the future battlespace

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 375 n/a
21
Computer World Services Corp. (CWS)cwsc.com

A trusted provider of enterprise IT solutions to federal Defense and Civilian customers with a focus on cybersecurity, cloud services, and software development

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Washington 340 1990
22
Navy Enterprise Business Solutions (NAVEBS)navy.mil

Provider of Navy Enterprise Business Solutions including Electronic Procurement, Labor Data Collection, and Enterprise Resource Planning software systems

Military ๐Ÿ‡บ๐Ÿ‡ธ Washington 338 n/a
23
GM Defensegmdefensellc.com

Provider of integrated vehicles, power, propulsion, autonomy, mobility, and security solutions in aerospace, defense, and security markets worldwide

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 324 2017
24
Windwardwindward.ai

Provides AI-powered maritime intelligence platform automating operations, mitigating risks, and enabling organizations to navigate complex global trade confidently and efficiently.

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ Washington 261 2010
25
CSSIcssiinc.com

Providing safety critical systems support and modernization for transportation and defense sectors, enhancing efficiency and infrastructure safety nationwide.

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Washington 255 1990
26
Hydrosathydrosat.com

The company offers daily high-resolution thermal data and analytics for applications in food security, public safety, and environmental monitoring

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Washington 108 2017
27
Akira Technologiesakira-tech.com

A data and cloud technology company specializing in modernizing, unifying, and innovating solutions for Federal Government agencies to unlock sustainable value

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Washington 81 2003
28
United States Air Force Logistics, Engineering and Force Protectionaf.mil

The company's staff supports DAF mission success by setting policy, allocating resources, and aligning efforts to achieve DoD and DAF priorities

Armed Forces ๐Ÿ‡บ๐Ÿ‡ธ Washington 7 n/a

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 2, 2026.

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