The 30 largest multinational companies in Arlington (2026 list)

These Arlington-based companies are predominantly large organizations operating in defense, aerospace, and related sectors. Key players include the US Army, focusing on land dominance, and RTX, involved in aviation and space systems. Boeing is a global aerospace leader, while Raytheon develops integrated air and missile defense solutions. CoStar Group provides real estate information, and Six Flags manages amusement parks.

A notable pattern among these companies is the strong presence of the defense and aerospace industries, reflecting Arlington's role as a hub for national security. Companies like Leonardo DRS and the United States Department of the Army further illustrate this concentration. Beyond defense, there's a mix of sectors, including The Nature Conservancy in conservation, The AES Corporation in utilities, and Lidl US in retail.

#	Company	Industry	Headquarters	Employees	Founded
1	US Army usarmybasic.com Providing prompt, sustained land dominance across full military operations spectrum, supporting combatant commanders in national defense and warfare.	Armed Forces	🇺🇸 Arlington	367,627	1775
2	RTX rtx.com Aerospace and defense operations through three business units focused on solving complex problems within aviation, space systems, and military technology sectors worldwide.	Aviation and Aerospace Component Manufacturing	🇺🇸 Arlington	139,657	n/a
3	Boeing boeing.com A global aerospace leader providing commercial airplanes, defense, space systems, and services, focused on innovation, customer delivery, and employee growth	Aviation and Aerospace Component Manufacturing	🇺🇸 Arlington	129,130	1916
4	Raytheon rtx.com Develops integrated air and missile defense, advanced sensors, space-based systems, hypersonics, and cyber solutions to provide next-generation protection and high-performance military effectors.	Defense and Space Manufacturing	🇺🇸 Arlington	48,589	1922
5	CoStar Group costargroup.com A leading provider of online real estate marketplaces, information, and analytics for commercial and residential properties, with a global presence	Real Estate	🇺🇸 Arlington	11,725	1987
6	Six Flags sixflags.com Large scale amusement park operations across North America following a merger to manage diverse entertainment venues and regional theme park destinations.	Entertainment Providers	🇺🇸 Arlington	9,357	1961
7	The Nature Conservancy nature.org Protecting and conserving natural resources through science-based, community-driven efforts to ensure a sustainable future for all life.	Non-profit Organizations	🇺🇸 Arlington	7,441	1951
8	Leonardo DRS leonardodrs.com Providing advanced sensing, network computing, force protection, and electric power propulsion technologies to global national security customers through practical, high-performance defense innovation.	Defense and Space Manufacturing	🇺🇸 Arlington	6,551	1969
9	United States Department of the Army army.mil The Department of the Army is a federal government agency within the Department of Defense responsible for organizing and leading the United States Army	Government Administration	🇺🇸 Arlington	6,218	1947
10	The AES Corporation aes.com Energy company focused on innovative, customized solutions for organizations with a collaborative approach, empowering growth and driving impact in the energy sector	Utilities	🇺🇸 Arlington	5,910	1981
11	APL apl.com Ocean transportation and in-country logistics services with U.S. flagged vessels connecting North America to key global military locations.	Maritime Transportation	🇺🇸 Arlington	5,040	1848
12	GTT gtt.net Global managed network and security services provider offering advanced cloud, networking, and security solutions with professional services and exceptional support worldwide	Telecommunications	🇺🇸 Arlington	3,917	n/a
13	Evolent evolent.com Partnering with health plans and providers to deliver evidence-based, affordable, and compassionate care for complex health conditions nationwide.	Hospitals and Health Care	🇺🇸 Arlington	3,799	2011
14	Lidl US careers.lidl.com Family-owned business offering high-quality goods at affordable prices Operates over 11,500 stores in 32 countries, growing rapidly in the US Join us for career development opportunities	Retail	🇺🇸 Arlington	3,063	1973
15	2U 2u.com A leading platform providing free-to-degree online education, connecting over 81 million learners with top universities and industry experts worldwide	Education Administration Programs	🇺🇸 Arlington	2,865	2008
Want more companies than this list? This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. Get more companies, free
16	DoDEA dodea.edu A global school system catering to US military and eligible DoD civilian families, providing world-class education services worldwide	Education Administration Programs	🇺🇸 Arlington	2,709	n/a
17	TechnoServe technoserve.org A nonprofit organization empowering people in the developing world to build competitive farms, businesses, and industries to alleviate poverty	Non-profit Organizations	🇺🇸 Arlington	2,599	1968
18	AV avinc.com Innovative solutions provider specializing in unmanned systems and high-altitude pseudo-satellites, empowering military and commercial customers with actionable intelligence for smarter decisions	Defense and Space Manufacturing	🇺🇸 Arlington	2,466	1971
19	American Institutes for Research air.org A nonprofit research institution providing evidence-based solutions for urgent challenges in education, health, workforce, human services, and international development worldwide	Research Services	🇺🇸 Arlington	2,010	1946
20	Fluence fluenceenergy.com Global leader in energy storage products and services, providing modular solutions, comprehensive services, and AI-enabled software for managing renewable energy and storage	Renewable Energy Semiconductor Manufacturing	🇺🇸 Arlington	1,962	2018
21	CEB, now Gartner gartner.com Providing research, advisory services, and technology solutions to help organizations make informed decisions and achieve their strategic priorities for future success	IT Services and IT Consulting	🇺🇸 Arlington	1,934	1983
22	DT Global dt-global.com An international organization focused on sustainable development, innovation, and solving complex problems in peacebuilding, governance, economic development, environment, and human development sectors	International Trade and Development	🇺🇸 Arlington	1,912	2019
23	Conservation International conservation.org Protecting critical natural areas globally through science, policy, finance, and partnerships to secure benefits nature provides to humanity.	Non-profit Organizations	🇺🇸 Arlington	1,756	1987
24	Ashoka ashoka.org Global leader in social innovation, empowering social entrepreneurs to create impactful change and new societal frameworks	Civic and Social Organizations	🇺🇸 Arlington	1,729	1982
25	POLITICO politico.com Global news and information company focusing on politics and policy, with a team of journalists covering various locations and providing authoritative, nonpartisan journalism	Online Audio and Video Media	🇺🇸 Arlington	1,626	2007
26	GardaWorld Federal Services garda-federal.com A US-based company specializing in security, medical, logistics, and support services for government and commercial clients domestically and internationally	Security and Investigations	🇺🇸 Arlington	1,502	n/a
27	Martin Sprocket & Gear martinsprocket.com Manufacturer of power transmission components, material handling products, and industrial hand tools with a focus on fast production and large inventories for superior service	Industrial Machinery Manufacturing	🇺🇸 Arlington	1,409	1951
28	Deloitte deloitte.com A global professional services organization specializing in consulting, financial advisory, risk management, tax, and auditing services for clients in various industries	Business Consulting and Services	🇺🇸 Arlington	1,383	n/a
29	Oil States Industries oilstates.com A technology company advancing the energy future with innovative equipment, systems, and services for energy, industrial, and military markets worldwide	Oil and Gas	🇺🇸 Arlington	1,356	1942
30	International Justice Mission ijm.org Human rights agency fighting against slavery, sexual exploitation, and oppression worldwide Working with governments to rescue victims, prosecute perpetrators, and strengthen justice systems	Non-profit Organizations	🇺🇸 Arlington	1,344	1997

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 11, 2026.

The 30 largest multinational companies in Arlington

Want more companies than this list?

Turn this list into pipeline

How this list is built

More company lists in Arlington

The same list elsewhere in United States