# Top 27 research institutes in Madrid

Tamtam tracks 27 research institutes headquartered in Madrid. This list ranks all of them by number of employees on LinkedIn, led by Universidad Complutense de Madrid, Universidad Autónoma de Madrid and CSIC. Their median headcount is 459. Half of them were founded in 1968 or later.

These Madrid-based organizations primarily comprise large public research institutions and universities. They are dedicated to advancing knowledge across various fields, from higher education to specialized scientific research.

Notable entities include the Universidad Complutense de Madrid, a public university offering extensive education and research, and CSIC, a government agency focused on scientific and technological progress. Hospital Universitario La Paz provides specialized healthcare services, while CNIC - Spanish National Center for Cardiovascular Research focuses on cardiovascular health. A common pattern among these institutions is their significant public sector presence and their focus on research, often with a national or international scope.

🇪🇸 Madrid · 27 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Universidad Complutense de Madrid](https://www.tamtam.ai/c/universidad-complutense-de-madrid) (ucm.es)<br>A public university in Madrid offering high-quality education, research opportunities, international collaborations, extensive library resources, diverse cultural activities, and sports facilities | Higher Education | 🇪🇸 Madrid | 14,024 | 1499 |
| 2 | [Universidad Autónoma de Madrid](https://www.tamtam.ai/c/universidad-autonoma-de-madrid) (uam.es)<br>Institution recognized for high-quality research, entrepreneurial capacity, teaching excellence, and social commitment. Actively promotes international exchange and training programs. | Higher Education | 🇪🇸 Madrid | 14,000 | 1968 |
| 3 | [CSIC](https://www.tamtam.ai/c/csic) (csic.es)<br>A government agency in Spain focused on basic and applied scientific research, with 126 centers across various fields promoting scientific and technological progress | Research Services | 🇪🇸 Madrid | 5,797 | 1939 |
| 4 | [Hospital Universitario La Paz](https://www.tamtam.ai/c/hospital-universitario-la-paz) (comunidad.madrid)<br>A public hospital in Madrid that offers specialized healthcare services to patients from Spain and other countries, with a strong reputation in the healthcare industry | Hospitals and Health Care | 🇪🇸 Madrid | 3,225 | 1964 |
| 5 | [Universidad CEU San Pablo](https://www.tamtam.ai/c/universidad-ceu-san-pablo) (uspceu.com)<br>We believe in your talent Transform your vocation into a profession at CEU San Pablo University Work towards your future with us | Higher Education | 🇪🇸 Madrid | 2,861 |  |
| 6 | [INIA](https://www.tamtam.ai/c/inia) (inia.es)<br>National research center coordinating agricultural and forestry R&D projects in collaboration with socio-economic sectors on a state level | Research Services | 🇪🇸 Madrid | 1,855 | 1971 |
| 7 | [CIEMAT](https://www.tamtam.ai/c/ciemat) (ciemat.es)<br>A public research organization focused on energy, environment, and related technologies to contribute to sustainable development and improve quality of life | Research Services | 🇪🇸 Madrid | 999 | 1951 |
| 8 | [Instituto de Salud Carlos III](https://www.tamtam.ai/c/instituto-de-salud-carlos-iii) (isciii.es)<br>A leading public research institution in Spain focused on biomedical research, public health, training, and providing healthcare services to the population | Research Services | 🇪🇸 Madrid | 948 | 1986 |
| 9 | [CNIC - Spanish National Center for Cardiovascular Research / Centro Nac. Investigaciones Cardiovasc.](https://www.tamtam.ai/c/cnic-spanish-national-center-for-cardiovascular-research-centro-nac) (cnic.es)<br>A leading international research center dedicated to understanding cardiovascular health, translating knowledge into patient care, and training talented biomedical researchers in Spain | Research Services | 🇪🇸 Madrid | 822 | 1999 |
| 10 | [Universidad Villanueva](https://www.tamtam.ai/c/universidad-villanueva) (villanueva.edu)<br>A specialized university in Communication, Law, Education, Business, Health, and Psychology, focused on training professionals to transform society with values | Higher Education | 🇪🇸 Madrid | 669 | 1977 |
| 11 | [CNIO - Spanish National Cancer Research Centre](https://www.tamtam.ai/c/cnio-spanish-national-cancer-research-centre) (cnio.es)<br>A Spanish institution focused on cancer research, diagnosis, and treatment with state-of-the-art facilities, clinical research units, and academic drug discovery program | Research Services | 🇪🇸 Madrid | 615 | 1998 |
| 12 | [Instituto Español de Oceanografía](https://www.tamtam.ai/c/instituto-espanol-de-oceanografia) (ieo.es)<br>A national research center focused on marine sciences, sustainability of fisheries, and marine environment, representing Spain in international forums, with various facilities and fleet | Government Administration | 🇪🇸 Madrid | 590 | 1914 |
| 13 | [INSST Instituto Nacional de Seguridad y Salud en el Trabajo](https://www.tamtam.ai/c/insst-instituto-nacional-de-seguridad-y-salud-en-el-trabajo) (insst.es)<br>Specialized organization analyzing and promoting workplace safety and health conditions, cooperating with government entities, autonomous communities, and relevant organizations to improve safety standards | Utilities | 🇪🇸 Madrid | 590 | 1971 |
| 14 | [Universidad Nacional de Educación a Distancia (UNED)](https://www.tamtam.ai/c/universidad-nacional-de-educacion-a-distancia-uned) (uned.es)<br>A prestigious Spanish distance learning university offering a wide range of undergraduate, postgraduate, and non-degree programs globally since 1972 | Higher Education | 🇪🇸 Madrid | 459 |  |
| 15 | [Centro Nacional de Biotecnología (CNB-CSIC)](https://www.tamtam.ai/c/centro-nacional-de-biotecnologia-cnb-csic) (cnb.csic.es)<br>A research center under CSIC focused on developing modern biotechnology, acquiring knowledge, promoting technology transfer, training researchers, and engaging society | Biotechnology Research | 🇪🇸 Madrid | 443 | 1992 |
| 16 | [Instituto Nacional de Técnica Aeroespacial «Esteban Terradas»](https://www.tamtam.ai/c/instituto-nacional-de-tecnica-aeroespacial-esteban-terradas) (inta.es)<br>The company is a Public Research Agency specialized in dual technological research in aeronautics, space, hydrodynamics, security, and defense sectors | Research Services | 🇪🇸 Madrid | 440 | 1942 |
| 17 | [Fundación para la Investigación Biomédica HULP](https://www.tamtam.ai/c/fundacion-para-la-investigacion-biomedica-hulp) (idipaz.es)<br>A non-profit entity managing biomedical research programs in Madrid, aimed at improving healthcare and promoting population health | Research Services | 🇪🇸 Madrid | 428 | 2004 |
| 18 | [Centro de Investigación Biomédica en Red CIBER](https://www.tamtam.ai/c/centro-de-investigacion-biomedica-en-red-ciber) (ciberisciii.es)<br>A biomedical research network in Spain focusing on translational research, connecting top research groups for industry transfer, led by ISCIII | Research Services | 🇪🇸 Madrid | 379 | 2006 |
| 19 | [CEDEX - Centro de Estudios y Experimentación de Obras Públicas](https://www.tamtam.ai/c/cedex-centro-de-estudios-y-experimentacion-de-obras-publicas) (cedex.es)<br>A public organization specializing in civil engineering, construction, and environmental studies, providing high-level technical support, research, and technological development for public and private sectors | Civil Engineering | 🇪🇸 Madrid | 328 | 1957 |
| 20 | [RAE (Real Academia Española)](https://www.tamtam.ai/c/rae-real-academia-espanola) (rae.es)<br>Preserving proper use and unity of the Spanish language, a shared heritage of 500 million Spanish speakers, since 1713 | Museums, Historical Sites, and Zoos | 🇪🇸 Madrid | 225 | 1713 |
| 21 | [Asociacion ICEA](https://www.tamtam.ai/c/asociacion-icea) (icea.es)<br>Leading research association in the Spanish insurance industry, compiling statistics, conducting market analysis, providing training, and representing over 200 insurance companies | Insurance | 🇪🇸 Madrid | 146 | 1963 |
| 22 | [Biblioteca Hospital 12 Octubre](https://www.tamtam.ai/c/biblioteca-hospital-12-octubre) (cendoc.h12o.es)<br>Company specializing in medical research on infectious diseases, with a focus on cytomegalovirus infection in solid organ transplant recipients | Wellness and Fitness Services | 🇪🇸 Madrid | 43 | 1973 |
| 23 | [Sociedad Española de Fertilidad](https://www.tamtam.ai/c/sociedad-espanola-de-fertilidad) (sefertilidad.net)<br>A scientific society promoting fertility studies for social issues, advising on reproductive health, and disseminating medical knowledge | Wellness and Fitness Services | 🇪🇸 Madrid | 39 | 1953 |
| 24 | [Sociedad Española de Periodoncia y Osteointegración](https://www.tamtam.ai/c/sociedad-espanola-de-periodoncia-y-osteointegracion) (sepa.es)<br>The company works in the non-profit sector to promote general well-being through partnerships, education, research, and social action programs | Wellness and Fitness Services | 🇪🇸 Madrid | 36 |  |
| 25 | [Real Academia de la Historia](https://www.tamtam.ai/c/real-academia-de-la-historia) (rah.es)<br>Established in 1735, this corporation is dedicated to supporting historical research through its departments, library, biographical dictionary, and antiquities cabinet They also host events | Museums | 🇪🇸 Madrid | 31 | 1738 |
| 26 | [Sociedad Española de Alergología e Inmunología Clínica](https://www.tamtam.ai/c/sociedad-espanola-de-alergologia-e-inmunologia-clinica) (seaic.org)<br>Founded in 1948, this non-profit scientific society focuses on professional excellence in allergy and related diseases for the benefit of patients | Wellness and Fitness Services | 🇪🇸 Madrid | 25 | 1948 |
| 27 | [Sociedad Española de Medicina Geriátrica](https://www.tamtam.ai/c/sociedad-espanola-de-medicina-geriatrica) (semeg.es)<br>A non-profit Spanish organization dedicated to promoting the study and development of Geriatrics, conducting research, providing advice, and supporting professional training in elderly care | Wellness and Fitness Services | 🇪🇸 Madrid | 19 | 2000 |

## 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 Madrid

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- [Multinational companies in Madrid](https://www.tamtam.ai/l/multinational-companies-madrid) (815)
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- [Financial services firms in Madrid](https://www.tamtam.ai/l/financial-services-firms-madrid) (231)
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- [Critical infrastructure operators in Madrid](https://www.tamtam.ai/l/critical-infrastructure-operators-madrid) (169)
- [Healthcare providers in Madrid](https://www.tamtam.ai/l/healthcare-providers-madrid) (161)
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- [Consulting firms in Madrid](https://www.tamtam.ai/l/consulting-firms-madrid) (157)
- [IT services companies in Madrid](https://www.tamtam.ai/l/it-services-companies-madrid) (155)
- [Education providers in Madrid](https://www.tamtam.ai/l/education-companies-madrid) (141)
- [IT Services and IT Consulting companies in Madrid](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-madrid) (138)
- [Software Development companies in Madrid](https://www.tamtam.ai/l/software-development-companies-madrid) (129)
- [Financial Services companies in Madrid](https://www.tamtam.ai/l/financial-services-companies-madrid) (125)
- [Insurance companies in Madrid](https://www.tamtam.ai/l/insurance-companies-madrid) (122)
- [SaaS companies in Madrid](https://www.tamtam.ai/l/saas-companies-madrid) (113)
- [Hotel and hospitality groups in Madrid](https://www.tamtam.ai/l/hospitality-groups-madrid) (104)
- [Manufacturers in Madrid](https://www.tamtam.ai/l/manufacturers-madrid) (91)
- [Public sector organisations in Madrid](https://www.tamtam.ai/l/public-sector-organisations-madrid) (90)
- [Retail Apparel and Fashion companies in Madrid](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-madrid) (89)
- [Corporate groups and holding companies in Madrid](https://www.tamtam.ai/l/holding-companies-madrid) (89)
- [Business Consulting and Services companies in Madrid](https://www.tamtam.ai/l/business-consulting-and-services-companies-madrid) (80)

## The same list elsewhere in Spain

- [Research institutes in Spain](https://www.tamtam.ai/l/research-institutes-spain) (183)
- [Research institutes in Catalonia](https://www.tamtam.ai/l/research-institutes-catalonia) (59)
- [Research institutes in Community of Madrid](https://www.tamtam.ai/l/research-institutes-community-of-madrid) (29)
- [Research institutes in Barcelona](https://www.tamtam.ai/l/research-institutes-barcelona) (31)

## The same list elsewhere

- [Research institutes in the world](https://www.tamtam.ai/l/research-institutes-in-the-world) (5,686)
- [Research institutes in Europe](https://www.tamtam.ai/l/research-institutes-in-europe) (2,713)

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Source: https://www.tamtam.ai/l/research-institutes-madrid