Company lists · Data refreshed September 2026
Top 25 Think tanks based in the United States
RevenueBase identified 271 company matches for think tanks associated with the United States as of September 2026 and tracks 12,120 professional contacts across them, including 4,488 with verified work emails. Washington is the largest hub.
This list covers company matches for think tanks 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 September 22, 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.
The 25 largest think tanks based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,660 contacts → | ||||
Exact match “RAND is a nonprofit, nonpartisan research organization that provides leaders with the information they need to make evidence-based decisions.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 2 | 937 contacts → | ||||
Exact match “The Center for Strategic and International Studies (CSIS) is a bipartisan, nonprofit policy research organization dedicated to advancing practical ideas to address the world’s…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 888 contacts → | ||||
Exact match “The Atlantic Council promotes constructive leadership and engagement in international affairs based on the central role of the Atlantic Community in meeting global challenges.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 4 | 695 contacts → | ||||
Exact match “Founded in 1973, The Heritage Foundation is a research and educational institution-a think tank-whose mission is to formulate and promote conservative public policies based on the…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 311 contacts → | ||||
Exact match “The Carnegie Endowment for International Peace generates strategic ideas and independent analysis, supports diplomacy, and trains the next generation of scholar-practitioners to…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 243 contacts → | ||||
Exact match “The Stimson Center promotes international security and shared prosperity through applied research and independent analysis, global engagement, and policy innovation.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 237 contacts → | ||||
Exact match “Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 8 | 222 contacts → | ||||
Exact match “Hudson Institute is a research-focused public policy think tank headquartered in Washington, DC, dedicated to promoting American leadership for a secure, free, and prosperous…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 9 | 178 contacts → | ||||
Exact match “Ideas.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 174 contacts → | ||||
Exact match “The Center for a New American Security (CNAS) is an independent, bipartisan, nonprofit organization that develops strong, pragmatic, and principled national security and defense…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 11 | 170 contacts → | ||||
Exact match “Capita is an independent think tank and community.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 150 contacts → | ||||
Exact match “The Center for European Policy Analysis (CEPA) is a nonprofit, nonpartisan, public policy institution headquartered in Washington, DC with hubs in London and Brussels, focused on…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 13 | 140 contacts → | ||||
Exact match “The Foreign Policy Research Institute (FPRI) is an independent nonpartisan think tank based in Philadelphia, PA.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 14 | 127 contacts → | ||||
Exact match “Third Way is a national think tank that champions modern center-left ideas.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 15 | 122 contacts → | ||||
Exact match “The public is demanding a different direction for their government, and the Texas Public Policy Foundation is providing the ideas that enable policymakers to chart that new course.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 113 contacts → | ||||
Exact match “The Potomac Institute for Policy Studies is an independent, 501(c)(3), not-for-profit public policy research institute.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 97 contacts → | ||||
Exact match “Public Policy Institute of California (PPIC) is a nonprofit, nonpartisan think tank.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 94 contacts → | ||||
Exact match “Established in 2014, the Niskanen Center is a nonpartisan think tank that works to change public policy through direct engagement in the policymaking process: developing and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 91 contacts → | ||||
Exact match “ACE is a trusted, national, nonprofit, think tank driven by the next generation of policy researchers.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 84 contacts → | ||||
Exact match “New Lines Institute for Strategy and Policy is a nonprofit and non-partisan think tank in Washington D.C.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 77 contacts → | ||||
Exact match “The Berggruen Institute’s mission is to develop foundational ideas and, through them, shape political, economic and social institutions for the 21st century.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 65 contacts → | ||||
Exact match “The Mackinac Center for Public Policy is a nonpartisan research and educational institute dedicated to improving the quality of life for all Michigan residents by promoting sound…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 58 contacts → | ||||
Exact match “PPI's mission is to define and promote a new progressive politics for America in the 21st century.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 56 contacts → | ||||
Exact match “The Heartland Institute is one of the world’s leading free-market think tanks.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 54 contacts → | ||||
Exact match “Sagamore is a nonprofit, nonpartisan think tank.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “think tanks”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 271 think tanks based in the United States
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Think tanks based in the United States at a glance
As of Sep 22, 2026Companies by employee count
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 271 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 “think tanks” 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 4,488 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 September 22, 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.
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 “think tanks”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many think tanks are there based in the United States?
RevenueBase identified 271 company matches for think tanks associated with the United States as of September 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?
RAND tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most think tanks?
Washington leads with 77 company records, followed by New York (22) and Los Angeles (9).
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 4,488 professional contacts with verified work emails tracked across these 271 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 September 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 271 think tanks based in the United States. Start with a free account, no credit card.
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Think tanks by geography
- Think tanks based in Australia
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- Think tanks based in Brazil
- Think tanks based in Canada
- Think tanks based in France
- Think tanks based in Germany
- Think tanks based in India
- Think tanks based in Italy
- Think tanks based in the Netherlands
- Think tanks based in the United Kingdom
Browse the directory
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.
More company lists
Company intelligence · public preview
Top 25 think tanks based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 271 matching company records for think tanks based in the United States, with 12,120 tracked contacts and 4,488 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 think tanks based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | RANDrand.org HQ: Santa Monica, CA, United StatesReported employees: 1,001-5,000 | Santa Monica, CA, United States | 1,001-5,000 | Exact match | 2,660 contacts → |
“RAND is a nonprofit, nonpartisan research organization that provides leaders with the information they need to make evidence-based decisions.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 937 contacts → |
“The Center for Strategic and International Studies (CSIS) is a bipartisan, nonprofit policy research organization dedicated to advancing practical ideas to address the world’s…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atlantic Councilatlanticcouncil.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 888 contacts → |
“The Atlantic Council promotes constructive leadership and engagement in international affairs based on the central role of the Atlantic Community in meeting global challenges.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | The Heritage Foundationheritage.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 695 contacts → |
“Founded in 1973, The Heritage Foundation is a research and educational institution-a think tank-whose mission is to formulate and promote conservative public policies based on the…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Carnegie Endowment For International Peacecarnegieendowment.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 311 contacts → |
“The Carnegie Endowment for International Peace generates strategic ideas and independent analysis, supports diplomacy, and trains the next generation of scholar-practitioners to…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Stimson Centerstimson.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 243 contacts → |
“The Stimson Center promotes international security and shared prosperity through applied research and independent analysis, global engagement, and policy innovation.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | PEW Research Centerpewresearch.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 237 contacts → |
“Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Hudson Institutehudson.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 222 contacts → |
“Hudson Institute is a research-focused public policy think tank headquartered in Washington, DC, dedicated to promoting American leadership for a secure, free, and prosperous…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Bipartisan Policy Centerbipartisanpolicy.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 178 contacts → |
“Ideas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 174 contacts → |
“The Center for a New American Security (CNAS) is an independent, bipartisan, nonprofit organization that develops strong, pragmatic, and principled national security and defense…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Capitacapita.org HQ: Greenville, SC, United StatesReported employees: Not recorded | Greenville, SC, United States | Not recorded | Exact match | 170 contacts → |
“Capita is an independent think tank and community.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 150 contacts → |
“The Center for European Policy Analysis (CEPA) is a nonprofit, nonpartisan, public policy institution headquartered in Washington, DC with hubs in London and Brussels, focused on…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Philadelphia, PA, United StatesReported employees: 11-50 | Philadelphia, PA, United States | 11-50 | Exact match | 140 contacts → |
“The Foreign Policy Research Institute (FPRI) is an independent nonpartisan think tank based in Philadelphia, PA.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Third WAYthirdway.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 127 contacts → |
“Third Way is a national think tank that champions modern center-left ideas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Texas Public Policy Foundationtexaspolicy.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 122 contacts → |
“The public is demanding a different direction for their government, and the Texas Public Policy Foundation is providing the ideas that enable policymakers to chart that new course.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Potomac Institute For Policy Studiespotomacinstitute.org HQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 113 contacts → |
“The Potomac Institute for Policy Studies is an independent, 501(c)(3), not-for-profit public policy research institute.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 97 contacts → |
“Public Policy Institute of California (PPIC) is a nonprofit, nonpartisan think tank.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Niskanen Centerniskanencenter.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 94 contacts → |
“Established in 2014, the Niskanen Center is a nonpartisan think tank that works to change public policy through direct engagement in the policymaking process: developing and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Alliance For Civic Engagementace-usa.orgHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 91 contacts → |
“ACE is a trusted, national, nonprofit, think tank driven by the next generation of policy researchers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | NEW Lines Institute For Strategy And Policynewlinesinstitute.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 84 contacts → |
“New Lines Institute for Strategy and Policy is a nonprofit and non-partisan think tank in Washington D.C.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Berggruen Instituteberggrueninst.substack.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 77 contacts → |
“The Berggruen Institute’s mission is to develop foundational ideas and, through them, shape political, economic and social institutions for the 21st century.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mackinac Center For Public Policymackinac.org HQ: Midland, United StatesReported employees: 11-50 | Midland, United States | 11-50 | Exact match | 65 contacts → |
“The Mackinac Center for Public Policy is a nonpartisan research and educational institute dedicated to improving the quality of life for all Michigan residents by promoting sound…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PPIprogressivepolicy.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 58 contacts → |
“PPI's mission is to define and promote a new progressive politics for America in the 21st century.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | The Heartland Instituteheartland.org HQ: Arlington Heights, IL, United StatesReported employees: 11-50 | Arlington Heights, IL, United States | 11-50 | Exact match | 56 contacts → |
“The Heartland Institute is one of the world’s leading free-market think tanks.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Sagamoresagamoreinstitute.org HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 54 contacts → |
“Sagamore is a nonprofit, nonpartisan think tank.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 271 company matches
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Think tanks: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
270 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 271 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for think tanks?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many think tanks did RevenueBase find based in the United States?
The saved snapshot records 271 matching company records, 12,120 tracked contacts and 4,488 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Think tanks by geography
- Think tanks based in Australia
- Think tanks based in Belgium
- Think tanks based in Brazil
- Think tanks based in Canada
- Think tanks based in France
- Think tanks based in Germany
- Think tanks based in India
- Think tanks based in Italy
- Think tanks based in the Netherlands
- Think tanks based in the United Kingdom
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 think tanks based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/think-tanks/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 think tanks based in the United States
RevenueBase records 271 matching company records for think tanks based in the United States, with 12,120 tracked contacts and 4,488 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 think tanks based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | RANDrand.org HQ: Santa Monica, CA, United StatesReported employees: 1,001-5,000 | Santa Monica, CA, United States | 1,001-5,000 | Exact match | 2,660 contacts → |
“RAND is a nonprofit, nonpartisan research organization that provides leaders with the information they need to make evidence-based decisions.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 937 contacts → |
“The Center for Strategic and International Studies (CSIS) is a bipartisan, nonprofit policy research organization dedicated to advancing practical ideas to address the world’s…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atlantic Councilatlanticcouncil.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 888 contacts → |
“The Atlantic Council promotes constructive leadership and engagement in international affairs based on the central role of the Atlantic Community in meeting global challenges.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | The Heritage Foundationheritage.org HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 695 contacts → |
“Founded in 1973, The Heritage Foundation is a research and educational institution-a think tank-whose mission is to formulate and promote conservative public policies based on the…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Carnegie Endowment For International Peacecarnegieendowment.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 311 contacts → |
“The Carnegie Endowment for International Peace generates strategic ideas and independent analysis, supports diplomacy, and trains the next generation of scholar-practitioners to…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Stimson Centerstimson.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 243 contacts → |
“The Stimson Center promotes international security and shared prosperity through applied research and independent analysis, global engagement, and policy innovation.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | PEW Research Centerpewresearch.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 237 contacts → |
“Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Hudson Institutehudson.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 222 contacts → |
“Hudson Institute is a research-focused public policy think tank headquartered in Washington, DC, dedicated to promoting American leadership for a secure, free, and prosperous…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Bipartisan Policy Centerbipartisanpolicy.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 178 contacts → |
“Ideas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 174 contacts → |
“The Center for a New American Security (CNAS) is an independent, bipartisan, nonprofit organization that develops strong, pragmatic, and principled national security and defense…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Capitacapita.org HQ: Greenville, SC, United StatesReported employees: Not recorded | Greenville, SC, United States | Not recorded | Exact match | 170 contacts → |
“Capita is an independent think tank and community.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 150 contacts → |
“The Center for European Policy Analysis (CEPA) is a nonprofit, nonpartisan, public policy institution headquartered in Washington, DC with hubs in London and Brussels, focused on…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Philadelphia, PA, United StatesReported employees: 11-50 | Philadelphia, PA, United States | 11-50 | Exact match | 140 contacts → |
“The Foreign Policy Research Institute (FPRI) is an independent nonpartisan think tank based in Philadelphia, PA.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Third WAYthirdway.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 127 contacts → |
“Third Way is a national think tank that champions modern center-left ideas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Texas Public Policy Foundationtexaspolicy.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 122 contacts → |
“The public is demanding a different direction for their government, and the Texas Public Policy Foundation is providing the ideas that enable policymakers to chart that new course.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Potomac Institute For Policy Studiespotomacinstitute.org HQ: Arlington, VA, United StatesReported employees: 51-200 | Arlington, VA, United States | 51-200 | Exact match | 113 contacts → |
“The Potomac Institute for Policy Studies is an independent, 501(c)(3), not-for-profit public policy research institute.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 97 contacts → |
“Public Policy Institute of California (PPIC) is a nonprofit, nonpartisan think tank.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Niskanen Centerniskanencenter.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 94 contacts → |
“Established in 2014, the Niskanen Center is a nonpartisan think tank that works to change public policy through direct engagement in the policymaking process: developing and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Alliance For Civic Engagementace-usa.org HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 91 contacts → |
“ACE is a trusted, national, nonprofit, think tank driven by the next generation of policy researchers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | NEW Lines Institute For Strategy And Policynewlinesinstitute.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 84 contacts → |
“New Lines Institute for Strategy and Policy is a nonprofit and non-partisan think tank in Washington D.C.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Berggruen Instituteberggrueninst.substack.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 77 contacts → |
“The Berggruen Institute’s mission is to develop foundational ideas and, through them, shape political, economic and social institutions for the 21st century.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Mackinac Center For Public Policymackinac.org HQ: Midland, United StatesReported employees: 11-50 | Midland, United States | 11-50 | Exact match | 65 contacts → |
“The Mackinac Center for Public Policy is a nonpartisan research and educational institute dedicated to improving the quality of life for all Michigan residents by promoting sound…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | PPIprogressivepolicy.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 58 contacts → |
“PPI's mission is to define and promote a new progressive politics for America in the 21st century.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | The Heartland Instituteheartland.org HQ: Arlington Heights, IL, United StatesReported employees: 11-50 | Arlington Heights, IL, United States | 11-50 | Exact match | 56 contacts → |
“The Heartland Institute is one of the world’s leading free-market think tanks.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Sagamoresagamoreinstitute.org HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 54 contacts → |
“Sagamore is a nonprofit, nonpartisan think tank.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 271 company matches
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Think tanks: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
270 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 271 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for think tanks?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many think tanks did RevenueBase find based in the United States?
The saved snapshot records 271 matching company records, 12,120 tracked contacts and 4,488 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 think tanks based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/think-tanks/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗