38 leading research institutes in Washington (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	NASA - National Aeronautics and Space Administration nasa.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	🇺🇸 Washington	50,817	1958
2	NOAA: National Oceanic & Atmospheric Administration noaa.gov NOAA provides daily weather forecasts, climate monitoring, fisheries management, and marine commerce support, using cutting-edge research and technology	Government Administration	🇺🇸 Washington	11,487	n/a
3	Georgetown University georgetown.edu 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
4	US Department of Agriculture (USDA) Agricultural Research Service (ARS)ars.usda.gov A leading agricultural research agency under USDA, conducting cutting-edge projects to improve farming practices and technologies for consumers worldwide	Research Services	🇺🇸 Washington	9,821	1953
5	Howard University howard.edu A culturally diverse, research-intensive university providing exceptional education at undergraduate, graduate, and professional levels with a focus on Black students and global leadership	Higher Education	🇺🇸 Washington	7,777	1867
6	Smithsonian Institution si.edu The world's largest museum, education, and research complex fostering a community of learning and discovery for all Legal: [link]	Museums, Historical Sites, and Zoos	🇺🇸 Washington	6,665	n/a
7	U.S. Naval Research Laboratory nrl.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	🇺🇸 Washington	3,372	1923
8	University of the District of Columbia udc.edu A diverse urban land-grant institution in the United States offering education, research, and community service through various colleges and schools	Higher Education	🇺🇸 Washington	2,061	1851
9	Center for Strategic and International Studies (CSIS)csis.org A bipartisan, nonprofit policy research organization in Washington, DC, dedicated to providing strategic insights and policy solutions for a better world	Think Tanks	🇺🇸 Washington	1,755	1962
10	Innovations for Poverty Action poverty-action.org A non-profit organization focusing on research and policy to find and promote effective solutions for global poverty issues	Research Services	🇺🇸 Washington	1,523	2002
11	World Resources Institute wri.org Independent research organization improving lives, protecting nature, stabilizing climate through data-driven policy influence across food, energy, water, and cities.	Non-profit Organizations	🇺🇸 Washington	1,429	1982
12	The George Washington University School of Medicine and Health Sciences smhs.gwu.edu A prestigious medical school offering top-tier residency programs, innovative education, and opportunities in health and biomedical sciences in the nation's capital	Higher Education	🇺🇸 Washington	1,130	n/a
13	German Marshall Fund of the United States gmfus.org Nonpartisan organization promoting transatlantic partnership to address 21st-century challenges and opportunities between Europe and North America.	Think Tanks	🇺🇸 Washington	975	1972
14	American Enterprise Institute aei.org A public policy think tank dedicated to defending human dignity, expanding human potential, and promoting freedom and opportunity worldwide	Think Tanks	🇺🇸 Washington	967	1938
15	International Food Policy Research Institute (IFPRI)ifpri.org A research institute focused on sustainable solutions to end hunger and poverty worldwide through evidence-based research in a collaborative environment	Research Services	🇺🇸 Washington	924	1975
16	The Brookings Institution brookings.edu A renowned think tank conducting independent research, offering innovative policy solutions, and consistently ranked as the most influential and trusted globally	Think Tanks	🇺🇸 Washington	907	1916
17	Urban Institute urban.org Research institution providing evidence-based solutions to improve lives, strengthen communities, and promote well-being and shared prosperity.	Research Services	🇺🇸 Washington	799	1968
18	Georgetown University Medical Center gumc.georgetown.edu An internationally recognized academic medical center focused on research, teaching, and patient care with a commitment to community outreach and holistic healthcare	Higher Education	🇺🇸 Washington	739	1789
19	United States Holocaust Memorial Museum ushmm.org The organization serves as a living memorial to the Holocaust, educating millions on the dangers of hatred, preventing genocide, and promoting human dignity worldwide	Museums	🇺🇸 Washington	640	1993
20	Police Foundation policinginstitute.org A non-profit organization dedicated to advancing policing through innovative research, technical assistance, and promoting science-based practices for over 45 years	Law Enforcement	🇺🇸 Washington	587	1970
21	Patient-Centered Outcomes Research Institute (PCORI)pcori.org An independent nonprofit organization funding research to provide evidence-based information for patients, caregivers, and clinicians to make informed healthcare decisions	Research Services	🇺🇸 Washington	579	2010
22	The George Washington University- Milken Institute School of Public Health publichealth.gwu.edu Promoting public health in the nation's capital through education, advocacy, and research to create a healthier future for all	Higher Education	🇺🇸 Washington	571	n/a
23	National Energy Technology Laboratory netl.doe.gov Driving innovative solutions for a sustainable energy future, focusing on research, partnerships, and technologies to ensure affordable, reliable energy and environmental sustainability for all Americans	Research Services	🇺🇸 Washington	479	1910
24	Carnegie Science carnegiescience.edu A prestigious research organization focused on various scientific fields including plant biology, astronomy, Earth science, global ecology, and developmental biology	Research Services	🇺🇸 Washington	452	1902
25	Middle East Institute mei.edu A Washington, DC-based institution founded in 1946 dedicated to studying the Middle East, increasing knowledge, and fostering better understanding between regions	International Affairs	🇺🇸 Washington	397	1946
26	US Geological Survey usgs.gov Provider of authoritative scientific information and research on Earth, natural resources, environmental issues, and natural hazards at the federal level	Research Services	🇺🇸 Washington	393	n/a
27	Carnegie Endowment for International Peace carnegieendowment.org A global think tank dedicated to advancing international cooperation and engagement, with offices in key world capitals and a nonpartisan focus on practical results	Think Tanks	🇺🇸 Washington	386	1910
28	National Air and Space Museum, Smithsonian Institution airandspace.si.edu The company maintains a vast collection of aviation and space artifacts, operates two popular museums, and houses the Center for Earth and Planetary Studies	Museums, Historical Sites, and Zoos	🇺🇸 Washington	381	n/a
29	Smithsonian National Museum of Natural History naturalhistory.si.edu A renowned museum dedicated to inspiring curiosity and learning about the natural world through research, collections, exhibitions, and education programs	Museums, Historical Sites, and Zoos	🇺🇸 Washington	370	1910
30	New America newamerica.org A civic platform generating big ideas, designing evidence-based policies, and sharing solutions to public problems through partnerships and storytelling	Think Tanks	🇺🇸 Washington	366	1999
31	Tax Foundation taxfoundation.org A leading nonprofit focused on nonpartisan tax policy, conducting research, providing data, education, and tax modeling for greater economic growth and opportunity	Public Policy Offices	🇺🇸 Washington	342	1937
32	Cato Institute cato.org Promoting American public policy centered on individual liberty, limited government, free markets, and peaceful international relations	Think Tanks	🇺🇸 Washington	338	n/a
33	National Institute for Occupational Safety and Health cdc.gov A research agency under CDC, NIOSH focuses on studying worker safety and health to promote safe workplaces and protect human resources	Government Administration	🇺🇸 Washington	332	1971
34	Center for American Progress americanprogress.org independent nonpartisan policy institute promoting bold progressive ideas, leadership, and action to improve lives of all Americans	Think Tanks	🇺🇸 Washington	325	2003
35	Transportation Research Board nationalacademies.org Specializing in transportation research and advice, this division promotes innovation and provides impartial information exchange for all modes of transportation	Research Services	🇺🇸 Washington	269	1920
36	Hudson Institute hudson.org Non-partisan policy research organization focused on global security, prosperity, and freedom Offers interdisciplinary studies, publications, conferences, and strategic recommendations to government and business leaders	Think Tanks	🇺🇸 Washington	254	1961
37	Folger Shakespeare Library folger.edu The company provides unrivaled access to the world's largest Shakespeare collection, offering resources, performances, exhibitions, research opportunities, and educational experiences	Libraries	🇺🇸 Washington	213	1932
38	NATURAL STATE naturalstate.org The company focuses on large-scale restoration and rewilding to secure biodiversity, sequester carbon, and contribute to achieving Sustainable Development Goals	Environmental Services	🇺🇸 Washington	184	2020

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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.

38 leading research institutes in Washington

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