# Think Tanks companies around the world

Tamtam tracks 191 Think Tanks companies worldwide. This list ranks the 50 largest by number of employees on LinkedIn, led by Chief, Pavilion and Fabrica. Their median headcount is 652. Half of them were founded in 1973 or later. The most common headquarters are New York (8), Washington (6) and London (3).

These companies operate in the Think Tanks industry globally. They are mostly mid-sized to large organizations, with the largest being Chief, a private network for executive women, and Pavilion, a private community for B2B tech go-to-market leaders. Other notable organizations include Fabrica, a research center in Italy, and the Council on Foreign Relations, an independent nonpartisan organization providing analysis on international issues.

A significant number of these Think Tanks are headquartered in New York, with four of the largest companies based there. Washington, D.C. also hosts several prominent organizations such as the Center for Strategic and International Studies (CSIS) and the German Marshall Fund of the United States. The founding dates range from the early 20th century to recent years, indicating a mix of established institutions and newer communities.

🌍 World · 50 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Chief](https://www.tamtam.ai/c/chief) (chief.com)<br>Chief is a private network for executive women, providing access to a vetted community, executive coaching, programming, and a powerful network for leadership development | Think Tanks | 🇺🇸 New York | 7,729 | 2019 |
| 2 | [Pavilion](https://www.tamtam.ai/c/pavilion) (joinpavilion.com)<br>Private community for B2B tech go-to-market leaders offering networking, learning, events, courses, and a curated knowledge hub. | Think Tanks | 🇺🇸 New York | 5,431 | 2016 |
| 3 | [Fabrica](https://www.tamtam.ai/c/fabrica) (fabrica.it)<br>A research center in Italy founded by Luciano Benetton and Oliviero Toscani, offering artist-in-residence programs for creative talents under 25 | Think Tanks | 🇮🇹 Catena di Villorba | 3,951 | 1994 |
| 4 | [RevGenius](https://www.tamtam.ai/c/revgenius) (revgenius.com)<br>A community of revenue professionals collaborating on the future of B2B GTM through learning, sharing, and growing together | Think Tanks | 🇺🇸 New York | 3,740 | 2020 |
| 5 | [Council on Foreign Relations](https://www.tamtam.ai/c/council-on-foreign-relations) (cfr.org)<br>An independent nonpartisan organization providing analysis on international issues through a think tank, publication of Foreign Affairs magazine, and online resources | Think Tanks | 🇺🇸 New York | 2,183 | 1921 |
| 6 | [Center for Strategic and International Studies (CSIS)](https://www.tamtam.ai/c/center-for-strategic-and-international-studies-csis) (csis.org)<br>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 |
| 7 | [other](https://www.tamtam.ai/c/other) (google.com.tr)<br>Inspirational brand motivating individuals to persevere through life's challenges on the path to success and growth | Think Tanks | 🇹🇷 Istanbul | 1,563 | 2010 |
| 8 | [Friedrich-Ebert-Stiftung](https://www.tamtam.ai/c/friedrich-ebert-stiftung) (fes.de)<br>A non-profit organization promoting democracy, education, international cooperation, and social responsibility through political education, consulting, scholarships, and publications | Think Tanks | 🇩🇪 Bonn | 1,327 | 1925 |
| 9 | [PreSales Collective](https://www.tamtam.ai/c/presales-collective) (presalescollective.com)<br>The company aims to elevate the role of PreSales globally by providing resources, knowledge, networking, and mentorship for career development in PreSales | Think Tanks | 🇺🇸 Chicago | 1,202 | 2020 |
| 10 | [Chatham House](https://www.tamtam.ai/c/chatham-house) (chathamhouse.org)<br>A leading source of independent analysis and influential ideas on international affairs, hosting events and conferences, publishing journals and magazines | Think Tanks | 🇬🇧 London | 1,163 | 1920 |
| 11 | [Girişimci Kafası](https://www.tamtam.ai/c/girisimci-kafas) (girisimcikafasi.com)<br>A resource for individuals looking to enhance their careers and achieve success by staying updated on economics, job opportunities, motivation, and technology | Think Tanks | 🇹🇷 Istanbul | 1,036 | 2015 |
| 12 | [German Marshall Fund of the United States](https://www.tamtam.ai/c/german-marshall-fund-of-the-united-states) (gmfus.org)<br>Nonpartisan organization promoting transatlantic partnership to address 21st-century challenges and opportunities between Europe and North America. | Think Tanks | 🇺🇸 Washington | 975 | 1972 |
| 13 | [American Enterprise Institute](https://www.tamtam.ai/c/american-enterprise-institute) (aei.org)<br>A public policy think tank dedicated to defending human dignity, expanding human potential, and promoting freedom and opportunity worldwide | Think Tanks | 🇺🇸 Washington | 967 | 1938 |
| 14 | [Sistema Findes](https://www.tamtam.ai/c/sistema-findes) (findes.com.br)<br>A group of seven entities working together to promote the development of the industry in Espírito Santo through various services and initiatives | Think Tanks | 🇧🇷 Vitória | 949 | 1958 |
| 15 | [IABG](https://www.tamtam.ai/c/iabg) (iabg.de)<br>IABG is a European technology and science service provider offering analytical, technical, and operational solutions in various sectors including automotive, aerospace, and defense | Think Tanks | 🇩🇪 Ottobrunn | 918 | 1961 |
| 16 | [Institute for Applied Economic Research (Ipea)](https://www.tamtam.ai/c/institute-for-applied-economic-research-ipea) (ipea.gov.br)<br>A federal public foundation providing technical support for government actions, formulating public policies and Brazilian development programs through publications and seminars | Think Tanks | 🇧🇷 Brasília | 916 | 1964 |
| 17 | [The Conference Board](https://www.tamtam.ai/c/the-conference-board) (conference-board.org)<br>Provides trusted, non-partisan economic and business insights through research and analysis for members and the public. | Think Tanks | 🇺🇸 New York | 911 | 1916 |
| 18 | [The Brookings Institution](https://www.tamtam.ai/c/the-brookings-institution) (brookings.edu)<br>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 |
| 19 | [The Heritage Foundation](https://www.tamtam.ai/c/the-heritage-foundation) (heritage.org)<br>A conservative think tank founded in 1973, focused on promoting free enterprise, limited government, individual freedom, traditional values, and a strong national defense | Think Tanks | 🇺🇸 Washington | 805 | 1973 |
| 20 | [AZIENDA OSPEDALIERA POLICLINICO CONSORZIALE DI BARI](https://www.tamtam.ai/c/azienda-ospedaliera-policlinico-consorziale-di-bari)<br>A healthcare organization in Bari, Italy that operates a hospital and research center specializing in advanced medical treatments and technologies | Think Tanks | 🇮🇹 Bari | 799 |  |
| 21 | [Milken Institute](https://www.tamtam.ai/c/milken-institute) (milkeninstitute.org)<br>A nonprofit think tank promoting diversity and inclusion, providing resources, training, and opportunities for personal and professional growth in various office locations | Think Tanks | 🇺🇸 Santa Monica | 775 | 1991 |
| 22 | [ABNT - Associação Brasileira de Normas Técnicas](https://www.tamtam.ai/c/abnt-associacao-brasileira-de-normas-tecnicas) (abnt.org.br)<br>Established in 1940, this organization is responsible for technical standardization in Brazil, providing the necessary foundation for the country's technological development It is also involved in international standardization bodies | Think Tanks | 🇧🇷 São Paulo | 765 | 1940 |
| 23 | [ENGIE Research & Innovation](https://www.tamtam.ai/c/engie-research-and-innovation) (innovation.engie.com)<br>An innovation-focused company seeking collaborations with startups in Biogas, Energy communities, Energy efficiency, Hydrogen, and Energy storage projects | Think Tanks | 🇫🇷 Courbevoie | 686 |  |
| 24 | [Centre de recherche Azrieli du CHU Sainte-Justine](https://www.tamtam.ai/c/centre-de-recherche-azrieli-du-chu-sainte-justine) (recherche.chusj.org)<br>A research center focused on improving maternal and child health through innovative and multidisciplinary research, with a team of over 1200 members | Think Tanks | 🇨🇦 Montreal | 685 | 1974 |
| 25 | [Hoover Institution, Stanford University](https://www.tamtam.ai/c/hoover-institution-stanford-university) (hoover.org)<br>Researching economics, politics, and international affairs to advance ideas promoting economic opportunity, prosperity, and securing peace for America and humanity. | Think Tanks | 🇺🇸 Stanford | 652 | 1919 |
| 26 | [KAPSARC](https://www.tamtam.ai/c/kapsarc) (kapsarc.org)<br>Advisory think tank providing multidisciplinary research and strategic insights to support sustainable energy policies and sector development in Saudi Arabia. | Think Tanks | 🇸🇦 Riyadh | 636 | 2013 |
| 27 | [Heinrich-Böll-Stiftung](https://www.tamtam.ai/c/heinrich-boll-stiftung) (boell.de)<br>The company is dedicated to fostering democracy, human rights, environmental protection, gender equality, conflict prevention, and individual freedoms through global initiatives and partnerships | Think Tanks | 🇩🇪 Berlin | 632 |  |
| 28 | [German Energy Agency (dena)](https://www.tamtam.ai/c/german-energy-agency-dena) (dena.de)<br>Center of excellence for energy transition and climate protection, working with stakeholders to achieve climate neutrality goals through research, solutions, and partnerships | Think Tanks | 🇩🇪 Berlin | 627 | 2000 |
| 29 | [FGV DGPE](https://www.tamtam.ai/c/fgv-dgpe)<br>The Diretoria de Desenvolvimento da Gestão Pública e Políticas Educacionais focuses on improving public management and education policies to positively impact social indicators in Brazil | Think Tanks | 🇧🇷 Rio de Janeiro | 593 | 2018 |
| 30 | [ODI Global](https://www.tamtam.ai/c/odi-global) (odi.org)<br>Global think tank inspiring action on injustice and inequality through research, convening, and influencing to generate impactful ideas for people and planet | Think Tanks | 🇬🇧 London | 561 | 1960 |
| 31 | [The Post](https://www.tamtam.ai/c/the-post) (thepost.co)<br>A private membership network founded by elite athletes, providing access to a network, exclusive experiences, coaching, and a clubhouse for leaders in sport | Think Tanks | 🇺🇸 New York | 530 | 2021 |
| 32 | [Hampton](https://www.tamtam.ai/c/hampton-new-york) (joinhampton.com)<br>Provides a highly vetted membership community for entrepreneurs, founders, and CEOs to connect, share knowledge, and grow their businesses. | Think Tanks | 🇺🇸 New York | 529 | 2022 |
| 33 | [The Old Girls Club](https://www.tamtam.ai/c/the-old-girls-club) (jointheogc.com)<br>Connects ambitious women and non-binary individuals for tactical support, sharing insights, guidance, and resources on careers, compensation, family planning, and leadership strategies. | Think Tanks | 🇺🇸 New York | 526 | 2022 |
| 34 | [International Institute for Sustainable Development](https://www.tamtam.ai/c/international-institute-for-sustainable-development) (iisd.org)<br>An award-winning think tank promoting sustainable solutions worldwide, focusing on human development, environmental sustainability, and building broad-based coalitions | Think Tanks | 🇨🇦 Winnipeg | 520 |  |
| 35 | [Mitsubishi Research Institute](https://www.tamtam.ai/c/mitsubishi-research-institute) (mri.co.jp)<br>A prestigious think tank and consulting firm founded by Mitsubishi group, providing comprehensive solutions and IT services for sustainable business development | Think Tanks | 🇯🇵 Tokyo | 513 | 1970 |
| 36 | [WRI India](https://www.tamtam.ai/c/wri-india) (megaplusredirection.tedata.net)<br>Independent research organization focusing on improving lives, protecting nature, and addressing climate change through data-driven solutions in food, land, water, energy, and cities. | Think Tanks | 🇮🇳 New Delhi | 489 |  |
| 37 | [Fundação Ezequiel Dias](https://www.tamtam.ai/c/fundacao-ezequiel-dias) (gov.br)<br>Specializes in pharmaceutical products like antivenoms and medicines for healthcare policies, supplying government programs and conducting public health testing and research | Think Tanks | 🇧🇷 | 483 | 1909 |
| 38 | [IRCCS INRCA - Istituto Nazionale Ricovero e Cura Anziani](https://www.tamtam.ai/c/irccs-inrca-istituto-nazionale-ricovero-e-cura-anziani) (inrca.it)<br>Specialized hospital and research center in gerontology and geriatrics, recognized as a Scientific Research Institute, focused on elderly issues in Italy | Think Tanks | 🇮🇹 Ancona (AN) | 478 | 1968 |
| 39 | [Aditya Birla Management Corporation Pvt Ltd](https://www.tamtam.ai/c/aditya-birla-management-corporation-pvt-ltd) (adityabirla.com)<br>A multinational conglomerate headquartered in India, providing strategic direction, functional leadership, and specialist services to its group companies worldwide | Think Tanks | 🇮🇳 Mumbai | 463 |  |
| 40 | [PT. Nindya Karya](https://www.tamtam.ai/c/pt-nindya-karya) (nindyakarya.co.id)<br>Specializing in construction, EPC, and realty services, we deliver innovative, competitive, and world-class projects that optimize functionality and minimize costs | Think Tanks | 🇮🇩 Jakarta | 453 |  |
| 41 | [CREW](https://www.tamtam.ai/c/crew-austin) (crewexec.com)<br>A transformative membership network offering leadership development through self-awareness, networking, learning, coaching, events, and connections with top commercial leaders | Think Tanks | 🇺🇸 Austin | 452 | 2022 |
| 42 | [Onbekend](https://www.tamtam.ai/c/onbekend) (domeinenbank.nl)<br>The company provides expert services in various fields, specializing in customer satisfaction through high-quality solutions and innovative approaches | Think Tanks | 🇬🇧 Nn | 436 |  |
| 43 | [CERP \| Evidence Matters](https://www.tamtam.ai/c/cerp-evidence-matters) (cerp.org.pk)<br>An impact-driven organization enhancing decision-making with research, analytics, capacity building, data collection, and advisory services for public and private sectors | Think Tanks | 🇵🇰 Lahore | 423 | 2010 |
| 44 | [Council on Energy, Environment and Water (CEEW)](https://www.tamtam.ai/c/council-on-energy-environment-and-water-ceew) (ceew.in)<br>A leading not-for-profit policy research institution addressing global challenges through data, analysis, outreach, and partnerships with a focus on energy, environment, and water | Think Tanks | 🇮🇳 New Delhi | 422 | 2010 |
| 45 | [IZSLER - Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna](https://www.tamtam.ai/c/izsler-istituto-zooprofilattico-sperimentale-della-lombardia-e-dell-emilia) (izsler.it)<br>A Public Health Authority provides technical-scientific support for health, animal welfare, food safety, and environmental integrity through analysis, risk assessment, and research activities | Think Tanks | 🇮🇹 Brescia | 413 | 1921 |
| 46 | [Royal United Services Institute](https://www.tamtam.ai/c/royal-united-services-institute) (rusi.org)<br>Unique institution providing forward-thinking discussion, and careful reflection on international affairs, defense, and security matters with a global reach and an outstanding reputation for quality and objectivity. | Think Tanks | 🇬🇧 London | 411 | 1831 |
| 47 | [Bertelsmann Stiftung](https://www.tamtam.ai/c/bertelsmann-stiftung) (bertelsmann-stiftung.de)<br>A forward-thinking operating foundation focusing on identifying social challenges, developing solutions, and offering policy consultancy on EU and neighboring regions | Think Tanks | 🇩🇪 Gütersloh | 398 | 1977 |
| 48 | [Osservatori Digital Innovation](https://www.tamtam.ai/c/osservatori-digital-innovation) (osservatori.net)<br>A leading source of information and knowledge on Digital Innovation enabled by ICT, based in Italy | Think Tanks | 🇮🇹 Milan | 387 | 1998 |
| 49 | [Carnegie Endowment for International Peace](https://www.tamtam.ai/c/carnegie-endowment-for-international-peace) (carnegieendowment.org)<br>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 |
| 50 | [Sebrae/MS](https://www.tamtam.ai/c/sebrae-ms) (sebrae.com.br)<br>A non-profit organization in Mato Grosso do Sul promoting competitiveness, sustainable development, entrepreneurship, and formalization of micro and small businesses through various programs and partnerships | Think Tanks | 🇧🇷 Campo Grande | 385 |  |

## 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 14, 2026.

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## The same list elsewhere

- [Think Tanks companies in Europe](https://www.tamtam.ai/l/think-tanks-companies-in-europe) (104)
- [Think Tanks companies in France](https://www.tamtam.ai/l/think-tanks-companies-france) (52)
- [Think Tanks companies in the United States](https://www.tamtam.ai/l/think-tanks-companies-united-states) (46)

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Source: https://www.tamtam.ai/l/think-tanks-companies-in-the-world