# List of research institutes in Rio de Janeiro State

Tamtam tracks 33 research institutes headquartered in Rio de Janeiro State. This list ranks all of them by number of employees on LinkedIn, led by Federal University of Rio de Janeiro, UERJ and Universidade Federal do Rio de Janeiro. Their median headcount is 725. Half of them were founded in 1952 or later. The most common headquarters are Rio de Janeiro (28) and Niterói (2).

The research institutes in Rio de Janeiro State are primarily higher education institutions, often very large, alongside some major public health research centers. Most of these organizations are well-established, with many founded in the early to mid-20th century.

Key players include the Federal University of Rio de Janeiro, an internationally respected institution, and UERJ, a leading university with 15 campuses. FIOCRUZ - Fundação Oswaldo Cruz focuses on biological sciences and public health research. Bio-Manguinhos / Fiocruz produces vaccines and diagnostic kits. A notable pattern is the concentration of these large institutions in the city of Rio de Janeiro itself.

🇧🇷 Rio de Janeiro State · 33 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Federal University of Rio de Janeiro](https://www.tamtam.ai/c/federal-university-of-rio-de-janeiro) (ufrj.br)<br>A well-established and internationally respected institution, with historical roots dating back to the 18th century, offering a wide range of academic programs | Higher Education | 🇧🇷 Rio de Janeiro | 10,389 | 1920 |
| 2 | [UERJ](https://www.tamtam.ai/c/uerj) (uerj.br)<br>A leading university established in 1950, offering undergraduate, graduate, and basic education programs across 15 campuses, with around 40,000 students and a diverse faculty | Education Administration Programs | 🇧🇷 Rio de Janeiro | 10,067 | 1950 |
| 3 | [Universidade Federal do Rio de Janeiro](https://www.tamtam.ai/c/universidade-federal-do-rio-de-janeiro) (ufrj.br)<br>Higher education institution empowering individuals to excel in professions, value diverse knowledge, engage as active citizens, and drive societal transformation towards justice and democracy | Higher Education | 🇧🇷 Rio de Janeiro | 9,556 |  |
| 4 | [Universidade Federal Fluminense](https://www.tamtam.ai/c/universidade-federal-fluminense-niteroi) (uff.br)<br>A leading educational institution with diverse programs including undergraduate and graduate courses, as well as specialization and medical residency programs | Higher Education | 🇧🇷 Niterói | 8,445 | 1960 |
| 5 | [FIOCRUZ - Fundação Oswaldo Cruz](https://www.tamtam.ai/c/fiocruz-fundacao-oswaldo-cruz) (en.wikipedia.org)<br>A Brazilian institution focused on research and development in biological sciences, specializing in public health research and founded by Dr Oswaldo Cruz in 1900 | Truck Transportation | 🇧🇷 Rio de Janeiro | 4,448 | 1900 |
| 6 | [Fiocruz](https://www.tamtam.ai/c/fiocruz) (fiocruz.br)<br>Promoting health and social development, generating and disseminating scientific and technological knowledge, and promoting citizenship through healthcare research and technology | Pharmaceutical Manufacturing | 🇧🇷 Rio de Janeiro | 3,625 | 1900 |
| 7 | [Universidade Federal Rural do Rio de Janeiro](https://www.tamtam.ai/c/universidade-federal-rural-do-rio-de-janeiro) (ufrrj.br)<br>A Brazilian university founded in 1910, offering agriculture and veterinary education with the largest campus in Latin America | Higher Education | 🇧🇷 Seropédica | 3,276 |  |
| 8 | [Bio-Manguinhos / Fiocruz](https://www.tamtam.ai/c/bio-manguinhos-fiocruz) (bio.fiocruz.br)<br>A leading unit of a health foundation, producing vaccines, diagnostic kits, and biopharmaceuticals since 1976 to meet public health needs | Biotechnology Research | 🇧🇷 Rio de Janeiro | 1,665 | 1976 |
| 9 | [RNP](https://www.tamtam.ai/c/rnp) (rnp.br)<br>Provides secure, high-capacity internet and personalized services, promoting innovation for education and research across Brazil, connecting universities, institutes, and technology hubs. | Technology, Information and Internet | 🇧🇷 Rio de Janeiro | 1,336 | 1989 |
| 10 | [Fundação Oswaldo Cruz (Fiocruz)](https://www.tamtam.ai/c/fundacao-oswaldo-cruz-fiocruz) (fiocruz.br)<br>Public health institution affiliated with the Ministry of Health, dedicated to healthcare services and initiatives in the public sector | Public Health | 🇧🇷 Rio de Janeiro | 1,328 | 1900 |
| 11 | [Universidade Candido Mendes](https://www.tamtam.ai/c/universidade-candido-mendes) (candidomendes.edu.br)<br>The company is the oldest private institution of higher education in Brazil, offering research, postgraduate programs, seminars with renowned speakers, and various undergraduate courses | Higher Education | 🇧🇷 Rio de Janeiro | 1,243 | 1902 |
| 12 | [IFF - Instituto Federal Fluminense](https://www.tamtam.ai/c/iff-instituto-federal-fluminense) (portal1.iff.edu.br)<br>A specialized educational institution offering a range of professional and technological education programs across various campuses | Higher Education | 🇧🇷 Macaé | 1,154 | 1909 |
| 13 | [UNIRIO](https://www.tamtam.ai/c/unirio)<br>A federal institution of higher education in Rio de Janeiro offering undergraduate, graduate, and extension programs in various academic fields | Higher Education | 🇧🇷 Rio de Janeiro | 1,137 | 1979 |
| 14 | [Cefet/RJ - Centro Federal de Educação Tecnológica Celso Suckow da Fonseca](https://www.tamtam.ai/c/cefet-rj-centro-federal-de-educacao-tecnologica-celso-suckow-da-fonseca) (cefet-rj.br)<br>An institution dedicated to providing high-quality education through teaching, research, and extension activities to prepare professionals for social and economic development | Higher Education | 🇧🇷 Rio de Janeiro | 1,082 |  |
| 15 | [Instituto Nacional de Traumatologia e Ortopedia](https://www.tamtam.ai/c/instituto-nacional-de-traumatologia-e-ortopedia) (into.saude.gov.br)<br>Specializing in treating complex orthopedic diseases and traumas, the organization excels in surgical procedures and research, with a focus on quality and innovation | Hospitals and Health Care | 🇧🇷 Rio de Janeiro | 891 | 1943 |
| 16 | [Farmanguinhos / Fiocruz](https://www.tamtam.ai/c/farmanguinhos-fiocruz) (far.fiocruz.br)<br>A technical-scientific unit focused on education, research, technological innovation, and drug production, specialized in essential medications, cost reduction, and public health access | Pharmaceutical Manufacturing | 🇧🇷 Rio de Janeiro | 745 | 1976 |
| 17 | [Universidade Severino Sombra](https://www.tamtam.ai/c/universidade-severino-sombra) (universidadedevassouras.edu.br)<br>Private university in Vassouras, Rio de Janeiro, offering education, research, and outreach activities with facilities including laboratories, clinics, and a hospital | Higher Education | 🇧🇷 Vassouras | 725 | 1969 |
| 18 | [CEPEL](https://www.tamtam.ai/c/cepel) (cepel.br)<br>A research center focused on power generation, transmission, and distribution, with over 35 years of experience in energy research and development | Research Services | 🇧🇷 Rio de Janeiro | 711 | 1974 |
| 19 | [Universidade Federal Fluminense](https://www.tamtam.ai/c/universidade-federal-fluminense) (uff.br)<br>A federal university based in Niterói, Brazil, with additional teaching units in various cities in Rio de Janeiro and an extension unit in Pará | Government Relations Services | 🇧🇷 Niterói | 600 | 1960 |
| 20 | [Instituto Nacional de Cardiologia (Instituto Nacional de Cardiologia Laranjeiras)](https://www.tamtam.ai/c/instituto-nacional-de-cardiologia-instituto-nacional-de-cardiologia-laranjeiras) (inc.saude.gov.br)<br>Specializing in high-complexity treatment for cardiac diseases, the institute stands out for hemodynamic procedures, complex heart surgeries, transplants, and professional training in the healthcare field | Wellness and Fitness Services | 🇧🇷 Rio de Janeiro | 592 | 1973 |
| 21 | [FGV Brazil](https://www.tamtam.ai/c/fgv-brazil) (portal.fgv.br)<br>A leading institution focused on promoting social and economic development through research, innovation, and consulting in various fields globally | Higher Education | 🇧🇷 Rio de Janeiro | 585 | 1944 |
| 22 | [IMPA](https://www.tamtam.ai/c/impa) (impa.br)<br>A research institution and graduate school linked to the Brazilian Ministries of Science and Education, focused on pure and applied mathematics | Research Services | 🇧🇷 Rio de Janeiro | 577 | 1952 |
| 23 | [SENAI CETIQT](https://www.tamtam.ai/c/senai-cetiqt) (senaicetiqt.com)<br>A leading Latin American center providing education, technology, and innovation services for the chemical and textile industries, focusing on real-world solutions Visit the website for more information | Higher Education | 🇧🇷 Rio de Janeiro | 524 | 1949 |
| 24 | [Instituto D'Or de Pesquisa e Ensino](https://www.tamtam.ai/c/instituto-d-or-de-pesquisa-e-ensino) (idor.org)<br>Nonprofit organization promoting scientific progress in healthcare through education, research, and collaboration with institutions and investigators for innovation | Research Services | 🇧🇷 Rio de Janeiro | 519 | 2010 |
| 25 | [CTCEA - Brazilian Organization for Scientific and Technological Development of Airspace Control](https://www.tamtam.ai/c/ctcea-brazilian-organization-for-scientific-and-technological-development-of) (ctcea.org.br)<br>An institution conducting research and development projects in aerospace control, defense, and environmental preservation, operating under private law in Brazil | Defense and Space Manufacturing | 🇧🇷 Rio de Janeiro | 514 |  |
| 26 | [Instituto Nacional de Tecnologia](https://www.tamtam.ai/c/instituto-nacional-de-tecnologia) (gov.br)<br>Innovative technology solutions, specialized services in energy, oil/gas, renewable energy, industrial health, defense, green chemistry, and social technologies through 19 laboratories | Research Services | 🇧🇷 Rio de Janeiro | 499 | 1921 |
| 27 | [Tecgraf / PUC-Rio](https://www.tamtam.ai/c/tecgraf-puc-rio) (tecgraf.puc-rio.br)<br>Innovative RD&I institute at PUC-Rio campus, integrating competencies to develop computer systems and solutions in digital tech, data science, and more | Software Development | 🇧🇷 Rio de Janeiro | 478 | 1987 |
| 28 | [Empresa de Pesquisa Energética](https://www.tamtam.ai/c/empresa-de-pesquisa-energetica) (linktr.ee)<br>Specializing in energy research, the company provides services for studies to support planning in various sectors such as electricity, oil, gas, coal, and renewable energy | Research Services | 🇧🇷 Rio de Janeiro | 478 |  |
| 29 | [FGV IBRE](https://www.tamtam.ai/c/fgv-ibre) (portalibre.fgv.br)<br>Specializing in economic indicators and sector studies, our company provides valuable insights to improve public policies and private actions in Brazil | Think Tanks | 🇧🇷 Rio de Janeiro | 355 | 1951 |
| 30 | [Instituto de Pesquisas Jardim Botânico do Rio de Janeiro](https://www.tamtam.ai/c/instituto-de-pesquisas-jardim-botanico-do-rio-de-janeiro) (gov.br)<br>Specializes in botanical research and conservation efforts in Brazil, focusing on preserving the country's unique plant species and ecosystems | Research Services | 🇧🇷 Rio de Janeiro | 342 |  |
| 31 | [Universidade Federal do Rio de Janeiro](https://www.tamtam.ai/c/universidade-federal-do-rio-de-janeiro-71902408) (ufrj.br)<br>A prestigious and internationally respected university, established in 1920 by the Federal Government, offering a wide range of academic programs | Higher Education | 🇧🇷 Rio de Janeiro | 307 | 1920 |
| 32 | [FUNDAÇÃO DE ESTUDOS DO MAR](https://www.tamtam.ai/c/fundacao-de-estudos-do-mar) (fundacaofemar.org.br)<br>A non-profit institution focused on developing and providing specialized services in education, research, technology innovation, and knowledge transmission related to the sea | Education | 🇧🇷 Rio de Janeiro | 185 | 1966 |
| 33 | [Agência de Inovação PUC-Rio](https://www.tamtam.ai/c/agencia-de-inovacao-puc-rio) (agi.puc-rio.br)<br>The PUC-Rio Innovation Agency promotes innovation, technology transfer, and strategic use of intellectual property to foster entrepreneurial development | Research Services | 🇧🇷 Rio de Janeiro | 6 | 2010 |

## 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 12, 2026.

## More company lists in Rio de Janeiro State

- [The largest companies in Rio de Janeiro State](https://www.tamtam.ai/l/largest-companies-rio-de-janeiro-state) (1,426)
- [Retail chains in Rio de Janeiro State](https://www.tamtam.ai/l/retail-chains-rio-de-janeiro-state) (171)
- [Critical infrastructure operators in Rio de Janeiro State](https://www.tamtam.ai/l/critical-infrastructure-operators-rio-de-janeiro-state) (136)
- [Education providers in Rio de Janeiro State](https://www.tamtam.ai/l/education-companies-rio-de-janeiro-state) (123)
- [Healthcare providers in Rio de Janeiro State](https://www.tamtam.ai/l/healthcare-providers-rio-de-janeiro-state) (104)
- [Retail companies in Rio de Janeiro State](https://www.tamtam.ai/l/retail-companies-rio-de-janeiro-state) (100)
- [Financial services firms in Rio de Janeiro State](https://www.tamtam.ai/l/financial-services-firms-rio-de-janeiro-state) (97)
- [Manufacturers in Rio de Janeiro State](https://www.tamtam.ai/l/manufacturers-rio-de-janeiro-state) (97)
- [Multinational companies in Rio de Janeiro State](https://www.tamtam.ai/l/multinational-companies-rio-de-janeiro-state) (94)
- [Companies with a mobile app in Rio de Janeiro State](https://www.tamtam.ai/l/companies-with-mobile-app-rio-de-janeiro-state) (83)
- [Public sector organisations in Rio de Janeiro State](https://www.tamtam.ai/l/public-sector-organisations-rio-de-janeiro-state) (79)
- [E-commerce companies in Rio de Janeiro State](https://www.tamtam.ai/l/ecommerce-companies-rio-de-janeiro-state) (76)
- [Energy companies in Rio de Janeiro State](https://www.tamtam.ai/l/energy-companies-rio-de-janeiro-state) (68)
- [Hospitals and Health Care companies in Rio de Janeiro State](https://www.tamtam.ai/l/hospitals-and-health-care-companies-rio-de-janeiro-state) (66)
- [Professional services firms in Rio de Janeiro State](https://www.tamtam.ai/l/professional-services-firms-rio-de-janeiro-state) (60)
- [Financial Services companies in Rio de Janeiro State](https://www.tamtam.ai/l/financial-services-companies-rio-de-janeiro-state) (58)
- [Logistics companies in Rio de Janeiro State](https://www.tamtam.ai/l/logistics-companies-rio-de-janeiro-state) (56)
- [Oil and Gas companies in Rio de Janeiro State](https://www.tamtam.ai/l/oil-and-gas-companies-rio-de-janeiro-state) (53)
- [Government Administration companies in Rio de Janeiro State](https://www.tamtam.ai/l/government-administration-companies-rio-de-janeiro-state) (48)
- [Corporate groups and holding companies in Rio de Janeiro State](https://www.tamtam.ai/l/holding-companies-rio-de-janeiro-state) (48)
- [Franchise networks in Rio de Janeiro State](https://www.tamtam.ai/l/franchise-networks-rio-de-janeiro-state) (45)
- [Higher Education companies in Rio de Janeiro State](https://www.tamtam.ai/l/higher-education-companies-rio-de-janeiro-state) (45)
- [Companies with in-house R&D in Rio de Janeiro State](https://www.tamtam.ai/l/r-and-d-companies-rio-de-janeiro-state) (43)
- [Wellness and Fitness Services companies in Rio de Janeiro State](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-rio-de-janeiro-state) (43)

## The same list elsewhere in Brazil

- [Research institutes in Brazil](https://www.tamtam.ai/l/research-institutes-brazil) (278)
- [Research institutes in São Paulo State](https://www.tamtam.ai/l/research-institutes-sao-paulo-state) (62)
- [Research institutes in Minas Gerais](https://www.tamtam.ai/l/research-institutes-minas-gerais) (31)
- [Research institutes in São Paulo](https://www.tamtam.ai/l/research-institutes-sao-paulo) (32)
- [Research institutes in Rio de Janeiro](https://www.tamtam.ai/l/research-institutes-rio-de-janeiro) (28)

## The same list elsewhere

- [Research institutes in the world](https://www.tamtam.ai/l/research-institutes-in-the-world) (5,686)
- [Research institutes in Latin America](https://www.tamtam.ai/l/research-institutes-in-latin-america) (512)

---

Source: https://www.tamtam.ai/l/research-institutes-rio-de-janeiro-state