# List of multinational companies in Washington

Tamtam tracks 218 multinational companies headquartered in Washington. This list ranks the 30 largest by number of employees on LinkedIn, led by US Navy, United States Marine Corps and United States Department of War. Their median headcount is 10,180. Half of them were founded in 1958 or later.

The companies in Washington include a significant presence of government and international organizations, alongside some large private sector firms. Notable examples are the US Navy, responsible for protecting America at sea; the United States Marine Corps, providing rapid deployment of combined-arms task forces; NASA, a pioneering organization in space exploration; and The World Bank, which provides financial and technical assistance to developing countries.

A common thread among these entities is their global reach and public service orientation. Many were founded in the mid-20th century, such as the United States Department of War (1949), NASA (1958), and USAID (1961), indicating a period of significant institutional growth in Washington.

🇺🇸 Washington · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [US Navy](https://www.tamtam.ai/c/us-navy) (navy.mil)<br>This company is responsible for protecting America at sea, defending freedom, preserving prosperity, and keeping the seas open and free | Armed Forces | 🇺🇸 Washington | 150,748 |  |
| 2 | [United States Marine Corps](https://www.tamtam.ai/c/united-states-marine-corps) (marines.mil)<br>Provides rapid deployment of combined-arms task forces using naval mobility for power projection on land, sea, and air. | Armed Forces | 🇺🇸 Washington | 78,275 |  |
| 3 | [United States Department of War](https://www.tamtam.ai/c/united-states-department-of-war) (war.gov)<br>A government department providing military forces to defend the country, deter adversaries, and work with allies for national security | Armed Forces | 🇺🇸 Washington | 68,533 | 1949 |
| 4 | [Danaher Corporation](https://www.tamtam.ai/c/danaher-corporation) (danaher.com)<br>Global life sciences and diagnostics innovator accelerating science and technology to improve human health, partnering with customers to advance life-changing science. | Medical Equipment Manufacturing | 🇺🇸 Washington | 53,252 | 1984 |
| 5 | [NASA - National Aeronautics and Space Administration](https://www.tamtam.ai/c/nasa-national-aeronautics-and-space-administration) (nasa.gov)<br>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 | 🇺🇸 Washington | 50,817 | 1958 |
| 6 | [The World Bank](https://www.tamtam.ai/c/the-world-bank-group) (worldbank.org)<br>A global institution providing financial and technical assistance to developing countries to reduce poverty and promote sustainable development across various sectors | International Trade and Development | 🇺🇸 Washington | 44,863 | 1944 |
| 7 | [U.S. Department of State](https://www.tamtam.ai/c/u-s-department-of-state) (state.gov)<br>The organization is dedicated to diplomacy, managing relationships with foreign governments, promoting America's interests, and representing citizens worldwide through diplomats and professionals | International Affairs | 🇺🇸 Washington | 37,601 |  |
| 8 | [American Red Cross](https://www.tamtam.ai/c/american-red-cross) (redcross.org)<br>Mobilizing volunteers and donors to provide emergency relief, blood donations, and life-saving skills training for communities worldwide. | Non-profit Organizations | 🇺🇸 Washington | 33,900 |  |
| 9 | [ibex](https://www.tamtam.ai/c/ibex) (ibex.co)<br>Provides global business process outsourcing, digital marketing, and customer engagement solutions using advanced technology and a large workforce. | Outsourcing and Offshoring Consulting | 🇺🇸 Washington | 25,670 |  |
| 10 | [Xylem](https://www.tamtam.ai/c/xylem) (xylem.com)<br>Global provider of advanced technologies and services focused on water and wastewater management, conservation, reuse, and environmental return. | Industrial Machinery Manufacturing | 🇺🇸 Washington | 19,290 |  |
| 11 | [USAID](https://www.tamtam.ai/c/usaid) (usaid.gov)<br>This organization works to end global poverty and support resilient, democratic societies by promoting economic prosperity, democracy, health, education, and humanitarian assistance worldwide | International Affairs | 🇺🇸 Washington | 16,196 | 1961 |
| 12 | [International Brotherhood of Electrical Workers (IBEW)](https://www.tamtam.ai/c/international-brotherhood-of-electrical-workers-ibew) (ibew.org)<br>A union representing over 775,000 members in various skilled occupations, negotiating collectively for wages, benefits, and rights in the US and Canada | Construction | 🇺🇸 Washington | 13,887 | 1891 |
| 13 | [IFC - International Finance Corporation](https://www.tamtam.ai/c/ifc-international-finance-corporation) (ifc.org)<br>An international organization supporting private sector development in developing countries by providing financial resources, expertise, and forging partnerships for sustainable growth | Financial Services | 🇺🇸 Washington | 10,688 |  |
| 14 | [FTI Consulting](https://www.tamtam.ai/c/fti-consulting) (fticonsulting.com)<br>Global expert firm providing crisis management, transformation consulting, and strategic solutions to organizations facing complex business challenges worldwide. | Business Consulting and Services | 🇺🇸 Washington | 10,452 | 1982 |
| 15 | [Georgetown University](https://www.tamtam.ai/c/georgetown-university) (georgetown.edu)<br>Major international research university with student-centered programs in Washington DC, Doha Qatar, and global locations, rooted in Jesuit tradition. | Higher Education | 🇺🇸 Washington | 10,180 | 1789 |
| 16 | [National Geographic](https://www.tamtam.ai/c/national-geographic) (nationalgeographic.com)<br>A multimedia destination sharing stories in science, exploration, and adventure, dedicated to funding scientists, explorers, and conservationists for over 135 years | Book and Periodical Publishing | 🇺🇸 Washington | 9,247 |  |
| 17 | [Peace Corps](https://www.tamtam.ai/c/peace-corps) (peacecorps.gov)<br>An international service organization sending Americans abroad to work with communities in education, health, economic development, agriculture, environment, and youth development | International Affairs | 🇺🇸 Washington | 8,068 | 1961 |
| 18 | [Inter-American Development Bank](https://www.tamtam.ai/c/inter-american-development-bank) (iadb.org)<br>Long-term financing, research, policy advice, and technical assistance for economic and social development in Latin America and the Caribbean. | International Trade and Development | 🇺🇸 Washington | 8,048 | 1959 |
| 19 | [International Monetary Fund](https://www.tamtam.ai/c/international-monetary-fund) (imf.org)<br>The company promotes global economic health by ensuring monetary system stability, providing advice, financing, and training to countries worldwide | International Trade and Development | 🇺🇸 Washington | 7,845 | 1945 |
| 20 | [Hogan Lovells](https://www.tamtam.ai/c/hogan-lovells) (hoganlovells.com)<br>Global team of 2,600+ lawyers providing innovative legal solutions for major industries worldwide, with a focus on diversity, community impact, and business strategy alignment | Law Practice | 🇺🇸 Washington | 7,724 | 1899 |
| 21 | [Jones Day](https://www.tamtam.ai/c/jones-day) (jonesday.com)<br>Provides comprehensive legal services worldwide through a large network of lawyers collaborating across multiple disciplines and jurisdictions. | Law Practice | 🇺🇸 Washington | 6,417 | 1893 |
| 22 | [American University](https://www.tamtam.ai/c/american-university) (american.edu)<br>A global education leader in the heart of the US capital, emphasizing social responsibility, diversity, and public service with prestigious faculty | Higher Education | 🇺🇸 Washington | 6,149 | 1893 |
| 23 | [United States Department of the Air Force](https://www.tamtam.ai/c/united-states-department-of-the-air-force-washington) (af.mil)<br>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 | 🇺🇸 Washington | 5,392 | 1947 |
| 24 | [Chemonics International](https://www.tamtam.ai/c/chemonics-international) (chemonics.com)<br>An international development company with 4,000 specialists globally, focusing on various sectors like agriculture, governance, health, and supply chain solutions | Professional Services | 🇺🇸 Washington | 3,985 | 1975 |
| 25 | [Consilio LLC](https://www.tamtam.ai/c/consilio-llc) (consilio.com)<br>Offers eDiscovery, document review, flexible legal talent, legal advisory, and transformation consulting services to law firms and corporations globally. | Law Practice | 🇺🇸 Washington | 3,639 |  |
| 26 | [Special Olympics](https://www.tamtam.ai/c/special-olympics) (specialolympics.org)<br>Organisation dedicated to providing year-round sports training and competition for individuals with intellectual disabilities, promoting physical fitness, courage, joy, and community inclusion | Non-profit Organizations | 🇺🇸 Washington | 3,390 |  |
| 27 | [Cogent Communications](https://www.tamtam.ai/c/cogent-communications) (cogentco.com)<br>Provides high-quality Internet, Ethernet, and Colocation services to enterprises worldwide through a vast all-optical IP network. | Telecommunications | 🇺🇸 Washington | 2,890 | 1999 |
| 28 | [Generation](https://www.tamtam.ai/c/generation) (generation.org)<br>The company is dedicated to preparing, placing, and supporting individuals in life-changing careers while advocating for increased opportunities for everyone | Non-profit Organizations | 🇺🇸 Washington | 2,885 |  |
| 29 | [Palladium: Make It Possible](https://www.tamtam.ai/c/palladium-make-it-possible) (thepalladiumgroup.com)<br>Collaborates with governments, businesses, and communities to design and implement large-scale programs tackling climate, conflict, and inequality worldwide. | Business Consulting and Services | 🇺🇸 Washington | 2,845 | 1965 |
| 30 | [The Carlyle Group](https://www.tamtam.ai/c/the-carlyle-group) (carlyle.com)<br>Global investment firm deploying private capital across private equity, credit, and AlpInvest segments to fuel growth for companies and performance for investors. | Financial Services | 🇺🇸 Washington | 2,838 |  |

## 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.

## More company lists in Washington

- [The largest companies in Washington](https://www.tamtam.ai/l/largest-companies-washington) (1,165)
- [Non-profit Organizations companies in Washington](https://www.tamtam.ai/l/non-profit-organizations-companies-washington) (145)
- [Education providers in Washington](https://www.tamtam.ai/l/education-companies-washington) (109)
- [Professional services firms in Washington](https://www.tamtam.ai/l/professional-services-firms-washington) (109)
- [Government Administration companies in Washington](https://www.tamtam.ai/l/government-administration-companies-washington) (100)
- [Consulting firms in Washington](https://www.tamtam.ai/l/consulting-firms-washington) (70)
- [Public sector organisations in Washington](https://www.tamtam.ai/l/public-sector-organisations-washington) (65)
- [Subscription businesses in Washington](https://www.tamtam.ai/l/subscription-businesses-washington) (63)
- [IT Services and IT Consulting companies in Washington](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-washington) (55)
- [Media companies and publishers in Washington](https://www.tamtam.ai/l/media-companies-washington) (52)
- [IT services companies in Washington](https://www.tamtam.ai/l/it-services-companies-washington) (44)
- [Critical infrastructure operators in Washington](https://www.tamtam.ai/l/critical-infrastructure-operators-washington) (42)
- [Companies with in-house R&D in Washington](https://www.tamtam.ai/l/r-and-d-companies-washington) (41)
- [Financial Services companies in Washington](https://www.tamtam.ai/l/financial-services-companies-washington) (41)
- [Law firms in Washington](https://www.tamtam.ai/l/law-firms-washington) (41)
- [Financial services firms in Washington](https://www.tamtam.ai/l/financial-services-firms-washington) (40)
- [Business Consulting and Services companies in Washington](https://www.tamtam.ai/l/business-consulting-and-services-companies-washington) (39)
- [SaaS companies in Washington](https://www.tamtam.ai/l/saas-companies-washington) (39)
- [Research institutes in Washington](https://www.tamtam.ai/l/research-institutes-washington) (38)
- [Venture capital and private equity firms in Washington](https://www.tamtam.ai/l/vc-and-private-equity-firms-washington) (37)
- [Companies with a mobile app in Washington](https://www.tamtam.ai/l/companies-with-mobile-app-washington) (36)
- [Healthcare providers in Washington](https://www.tamtam.ai/l/healthcare-providers-washington) (36)
- [Higher Education companies in Washington](https://www.tamtam.ai/l/higher-education-companies-washington) (36)
- [Law Practice companies in Washington](https://www.tamtam.ai/l/law-practice-companies-washington) (36)

## The same list elsewhere in United States

- [Multinational companies in the United States](https://www.tamtam.ai/l/multinational-companies-united-states) (16,197)
- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,592)
- [Multinational companies in New York State](https://www.tamtam.ai/l/multinational-companies-new-york-state) (2,216)
- [Multinational companies in Texas](https://www.tamtam.ai/l/multinational-companies-texas) (1,418)
- [Multinational companies in Florida](https://www.tamtam.ai/l/multinational-companies-florida) (897)
- [Multinational companies in Illinois](https://www.tamtam.ai/l/multinational-companies-illinois) (831)
- [Multinational companies in Massachusetts](https://www.tamtam.ai/l/multinational-companies-massachusetts) (637)
- [Multinational companies in New Jersey](https://www.tamtam.ai/l/multinational-companies-new-jersey) (624)
- [Multinational companies in Georgia](https://www.tamtam.ai/l/multinational-companies-georgia) (521)
- [Multinational companies in Pennsylvania](https://www.tamtam.ai/l/multinational-companies-pennsylvania) (472)
- [Multinational companies in Michigan](https://www.tamtam.ai/l/multinational-companies-michigan) (468)
- [Multinational companies in Alabama](https://www.tamtam.ai/l/multinational-companies-alabama) (416)
- [Multinational companies in Virginia](https://www.tamtam.ai/l/multinational-companies-virginia) (396)
- [Multinational companies in Ohio](https://www.tamtam.ai/l/multinational-companies-ohio) (390)
- [Multinational companies in North Carolina](https://www.tamtam.ai/l/multinational-companies-north-carolina) (358)
- [Multinational companies in Washington State](https://www.tamtam.ai/l/multinational-companies-washington-state) (288)
- [Multinational companies in Colorado](https://www.tamtam.ai/l/multinational-companies-colorado) (228)
- [Multinational companies in New York](https://www.tamtam.ai/l/multinational-companies-new-york) (1,836)
- [Multinational companies in San Francisco](https://www.tamtam.ai/l/multinational-companies-san-francisco) (446)
- [Multinational companies in Houston](https://www.tamtam.ai/l/multinational-companies-houston) (402)
- [Multinational companies in Chicago](https://www.tamtam.ai/l/multinational-companies-chicago) (366)
- [Multinational companies in Miami](https://www.tamtam.ai/l/multinational-companies-miami) (289)
- [Multinational companies in Atlanta](https://www.tamtam.ai/l/multinational-companies-atlanta) (252)
- [Multinational companies in Boston](https://www.tamtam.ai/l/multinational-companies-boston) (241)

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Source: https://www.tamtam.ai/l/multinational-companies-washington