# 30 leading foundations in Madrid

Tamtam tracks 51 foundations headquartered in Madrid. This list ranks the 30 largest by number of employees on LinkedIn, led by CEU Educational Group, ONCE and Fundación Hospitalarias. Their median headcount is 543. Half of them were founded in 1994 or later.

The foundations in Madrid are primarily large and mid-sized organizations focused on social welfare, education, and healthcare. Notable examples include the CEU Educational Group, which is the largest Spanish educational group, and ONCE, dedicated to the inclusion of blind and visually impaired people. Fundación Hospitalarias provides specialized care for individuals with mental illness, while Fundación Laboral de la Construcción supports the construction sector. Aliados por la Integración promotes social and labor inclusion for vulnerable individuals.

These foundations demonstrate a strong commitment to societal well-being, with many established in the late 20th century. A significant number, such as Fundación Secretariado Gitano and Fundación Ayuda en Acción, concentrate on supporting vulnerable populations and promoting social inclusion both within Spain and internationally.

🇪🇸 Madrid · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [CEU Educational Group](https://www.tamtam.ai/c/ceu-educational-group) (ceu.es)<br>Largest Spanish educational group offering diverse programs from early education to postgraduate studies with international collaborations and innovative teaching methods. | Higher Education | 🇪🇸 Madrid | 5,989 | 1933 |
| 2 | [ONCE](https://www.tamtam.ai/c/once) (once.es)<br>The company works for the autonomy and inclusion of blind and visually impaired people through education, employment, and support services | Civic and Social Organizations | 🇪🇸 Madrid | 3,434 | 1938 |
| 3 | [Fundación Hospitalarias](https://www.tamtam.ai/c/fundacion-hospitalarias) (fundacionhospitalarias.org)<br>Non-profit institution providing specialized care, assistance, and social reintegration for individuals with mental illness, intellectual disabilities, and other conditions worldwide | Hospitals and Health Care | 🇪🇸 Madrid | 3,112 | 1881 |
| 4 | [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 |  |
| 5 | [Fundación Laboral de la Construcción](https://www.tamtam.ai/c/fundacion-laboral-de-la-construccion) (fundacionlaboral.org)<br>The company works to provide resources to companies and workers in the construction sector, aiming for a more professional, safe, and connected industry | Construction | 🇪🇸 Madrid | 1,695 | 1992 |
| 6 | [Aliados por la Integración](https://www.tamtam.ai/c/aliados-por-la-integracion) (aliadosporlaintegracion.org)<br>An organization with over 15 years of experience promoting social and labor inclusion for vulnerable individuals through partnerships with social entities, institutions, and businesses | Individual and Family Services | 🇪🇸 Madrid | 1,600 | 2001 |
| 7 | [FUNDACION SUMMA HUMANITATE](https://www.tamtam.ai/c/fundacion-summa-humanitate) (fundacionhumanitate.org)<br>A non-profit foundation supporting Church institutions with management issues to ensure continuity and preservation of their charism and works | Religious Institutions | 🇪🇸 Madrid | 1,200 | 2006 |
| 8 | [Fundación Cepaim](https://www.tamtam.ai/c/fundacion-cepaim) (cepaim.org)<br>A Third Sector social organization promoting an inclusive, cohesive, and intercultural society by providing access to citizen rights for vulnerable populations, with innovative projects in Spain | Non-profit Organizations | 🇪🇸 Madrid | 1,120 | 1994 |
| 9 | [Fundación Secretariado Gitano](https://www.tamtam.ai/c/fundacion-secretariado-gitano) (gitanos.org)<br>The foundation works to promote social inclusion, equal rights, and access to services for the Roma community in Spain and Europe | Civic and Social Organizations | 🇪🇸 Madrid | 1,022 | 1982 |
| 10 | [Fundación Ayuda en Acción](https://www.tamtam.ai/c/fundacion-ayuda-en-accion) (ayudaenaccion.org)<br>An independent NGO focused on improving the living conditions of children, families, and communities in disadvantaged regions of America, Asia, and Africa | Non-profit Organizations | 🇪🇸 Madrid | 931 | 1981 |
| 11 | [FUNDAE Fundación Estatal para la Formación en el Empleo](https://www.tamtam.ai/c/fundae-fundacion-estatal-para-la-formacion-en-el-empleo) (fundae.es)<br>Public institution managing employment training funds, providing financial aid and training programs to enhance workforce skills and competitiveness. | Utilities | 🇪🇸 Madrid | 690 | 1992 |
| 12 | [Teatro Real](https://www.tamtam.ai/c/teatro-real) (teatroreal.es)<br>The Teatro Real is a leading national opera institution in Spain, with a strong international presence, focusing on music and performing arts | Performing Arts | 🇪🇸 Madrid | 566 | 1818 |
| 13 | [Fundación Adecco](https://www.tamtam.ai/c/fundacion-adecco) (fundacionadecco.org)<br>The company supports employment inclusion for vulnerable individuals and provides HR solutions for socially responsible businesses in Spain | Human Resources Services | 🇪🇸 Madrid | 563 | 1999 |
| 14 | [Fundación Cibervoluntarios - Cybervolunteers Foundation](https://www.tamtam.ai/c/fundacion-cibervoluntarios-cybervolunteers-foundation) (cibervoluntarios.org)<br>A pioneering organization in technology volunteering, empowering people through technology across Spain with the help of volunteers and collaborations | Civic and Social Organizations | 🇪🇸 Madrid | 548 | 2001 |
| 15 | [Unidos en Red](https://www.tamtam.ai/c/unidos-en-red) (unidosenred.org)<br>A network committed to sustainable development, connecting and accelerating social impact projects with expertise and knowledge to make a difference in more lives each day | Non-profit Organizations | 🇪🇸 Madrid | 543 | 2012 |
| 16 | [Residencia de mayores](https://www.tamtam.ai/c/residencia-de-mayores) (geron.es)<br>A senior care residence providing high-quality and compassionate care services to elderly individuals in need of assistance and support | Hospitals and Health Care | 🇪🇸 Madrid | 499 | 1977 |
| 17 | [Fundación Manantial](https://www.tamtam.ai/c/fundacion-manantial) (fundacionmanantial.org)<br>A non-profit organization providing comprehensive care for individuals with mental health issues, offering employment opportunities and various services to support their recovery | Mental Health Care | 🇪🇸 Madrid | 463 | 1995 |
| 18 | [Fundación Real Madrid](https://www.tamtam.ai/c/fundacion-real-madrid) (realmadridfundacion.org)<br>This foundation promotes social responsibility through education, development, and integration initiatives, using team sports as a tool for intervention | Civic and Social Organizations | 🇪🇸 Madrid | 448 | 1997 |
| 19 | [Fundación ONCE / Inserta](https://www.tamtam.ai/c/fundacion-once-inserta) (fundaciononce.es)<br>The company supports social inclusion and employment for people with disabilities through job training, accessibility promotion, and universal design initiatives | Non-profit Organizations | 🇪🇸 Madrid | 444 | 1988 |
| 20 | [Fundación Integra España](https://www.tamtam.ai/c/fundacion-integra-espana) (fundacionintegra.org)<br>A foundation dedicated to promoting social inclusion by facilitating employment opportunities for vulnerable individuals through collaboration with businesses and social entities | Civic and Social Organizations | 🇪🇸 Madrid | 434 | 2001 |
| 21 | [Fundación Telefónica](https://www.tamtam.ai/c/fundacion-telefonica) (fundaciontelefonica.com)<br>This company promotes social and inclusive projects using technology to improve people's development opportunities and create a more fair and caring world | Civic and Social Organizations | 🇪🇸 Madrid | 423 |  |
| 22 | [FUNDACIÓN JUAN XXIII](https://www.tamtam.ai/c/fundacion-juan-xxiii) (fundacionjuanxxiii.org)<br>A private nonprofit foundation dedicated to enhancing the quality of life and promoting social integration of adults with intellectual disabilities | Civic and Social Organizations | 🇪🇸 Madrid | 403 | 1966 |
| 23 | [Hospital Fundación San José](https://www.tamtam.ai/c/hospital-fundacion-san-jose) (fundacioninstitutosanjose.com)<br>A non-profit institution with over 120 years of history providing healthcare, social services, and education, specializing in neurological rehabilitation, palliative care, and disability support | Hospitals and Health Care | 🇪🇸 Madrid | 391 | 1899 |
| 24 | [Fundación Adsis](https://www.tamtam.ai/c/fundacion-adsis) (fundacionadsis.org)<br>A non-profit organization working for over 55 years to build a fair, inclusive society, supporting vulnerable individuals to become agents of change | Non-profit Organizations | 🇪🇸 Madrid | 386 | 1996 |
| 25 | [ESIC University](https://www.tamtam.ai/c/esic-university) (esic.edu)<br>A purpose-driven university offering education in marketing, business, and technology to foster innovation and entrepreneurship among students since 1965 | Higher Education | 🇪🇸 Madrid | 382 | 2021 |
| 26 | [Fundación Amigó](https://www.tamtam.ai/c/fundacion-amigo) (fundacionamigo.org)<br>The organization works to support vulnerable children and youth, defending their rights, assisting in their transition to adulthood, and resolving family conflicts | Non-profit Organizations | 🇪🇸 Madrid | 376 | 1996 |
| 27 | [Inserta Empleo/Fundación ONCE](https://www.tamtam.ai/c/inserta-empleo-fundacion-once) (insertaempleo.es)<br>We provide training and employment services for people with disabilities, assisting them in finding job opportunities and offering support to businesses | Human Resources Services | 🇪🇸 Madrid | 366 |  |
| 28 | [FIIAPP](https://www.tamtam.ai/c/fiiapp) (fiiapp.org)<br>A public foundation managing technical cooperation projects in partnership with Spanish and European public cooperation systems, fostering trust and shared values for policy reform worldwide | International Affairs | 🇪🇸 Madrid | 339 |  |
| 29 | [Área de Empleo e Inclusión Social \| Fundación Santa María la Real](https://www.tamtam.ai/c/area-de-empleo-e-inclusion-social-fundacion-santa-maria-la-real) (areaempleofsmlr.es)<br>The company drives employability initiatives such as Employment and Social Entrepreneurship Launchers, focusing on social innovation for employment challenges and inclusion | Civic and Social Organizations | 🇪🇸 Madrid | 333 | 2013 |
| 30 | [Fundación Telefónica](https://www.tamtam.ai/c/fundacion-telefonica-madrid) (fundaciontelefonica.com)<br>The foundation aims to use technology to improve society by focusing on education, social initiatives, cultural projects, and digital volunteering in various countries | Telecommunications | 🇪🇸 Madrid | 309 |  |

## 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

- [The largest companies in Madrid](https://www.tamtam.ai/l/largest-companies-madrid) (2,650)
- [Multinational companies in Madrid](https://www.tamtam.ai/l/multinational-companies-madrid) (815)
- [Retail chains in Madrid](https://www.tamtam.ai/l/retail-chains-madrid) (259)
- [Financial services firms in Madrid](https://www.tamtam.ai/l/financial-services-firms-madrid) (231)
- [Professional services firms in Madrid](https://www.tamtam.ai/l/professional-services-firms-madrid) (227)
- [Wellness and Fitness Services companies in Madrid](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-madrid) (202)
- [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)
- [Companies with in-house R&D in Madrid](https://www.tamtam.ai/l/r-and-d-companies-madrid) (158)
- [Companies with a mobile app in Madrid](https://www.tamtam.ai/l/companies-with-mobile-app-madrid) (158)
- [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

- [Foundations in Spain](https://www.tamtam.ai/l/foundations-spain) (148)
- [Foundations in Community of Madrid](https://www.tamtam.ai/l/foundations-community-of-madrid) (56)
- [Foundations in Catalonia](https://www.tamtam.ai/l/foundations-catalonia) (46)
- [Foundations in Barcelona](https://www.tamtam.ai/l/foundations-barcelona) (25)

## The same list elsewhere

- [Foundations in the world](https://www.tamtam.ai/l/foundations-in-the-world) (1,835)
- [Foundations in Europe](https://www.tamtam.ai/l/foundations-in-europe) (1,147)

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Source: https://www.tamtam.ai/l/foundations-madrid