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Top 50 foundations in Île-de-France

Tamtam tracks 234 foundations headquartered in Île-de-France. This list ranks the 50 largest by number of employees on LinkedIn, led by Servier, Institut Pasteur and Apprentis d'Auteuil. Their median headcount is 428. Half of them were founded in 1948 or later. The most common headquarters are Paris (31), Boulogne-Billancourt (2) and Levallois-Perret (2).

🇫🇷 Île-de-France50 companiesUpdated Nov 12, 2026

These foundations in Île-de-France primarily operate in healthcare, social services, and scientific research. They range from large established institutions to more recent organizations. For example, Servier develops pharmaceuticals, Institut Pasteur conducts biomedical research, Apprentis d'Auteuil educates disadvantaged youth, and Institut Curie focuses on cancer research and treatment.

A notable pattern among these foundations is their strong concentration in Paris, with many headquartered in the capital. Their founding dates span from the late 19th century, such as Institut Pasteur (1887) and Apprentis d'Auteuil (1866), through to more recent establishments like Institut du Cerveau (2010), indicating a long-standing tradition of philanthropic and public service initiatives in the region.

#CompanyIndustryHeadquarters EmployeesFounded
1
Servierservier.com

Develops pharmaceuticals focused on cardiology, venous diseases, oncology, neurology, and rare diseases, prioritizing patient needs and investing heavily in research.

Pharmaceutical Manufacturing 🇫🇷 Suresnes 14,291 1954
2
Institut Pasteurpasteur.fr

Non-profit foundation specializing in biomedical research, public health, training, and technological innovation to combat infectious diseases worldwide.

Research Services 🇫🇷 Paris 4,743 1887
3
Apprentis d'Auteuilapprentis-auteuil.org

Educate and train over 13,000 disadvantaged youth, support family parental responsibilities, promote social integration and personal responsibility.

Non-profit Organizations 🇫🇷 Paris 4,096 1866
4
Institut Curiecurie.fr

A public utility foundation combining cancer research, innovative healthcare, and multidisciplinary approach to fight cancer through fundamental, translational, and clinical research

Hospitals and Health Care 🇫🇷 Paris 3,105 1909
5
Hôpitaux Saint-Joseph & Marie-Lannelonguefhsj.fr

Specialized hospital providing comprehensive services in medicine, surgery, and obstetrics, focusing on patient care and medical treatments.

Hospitals and Health Care 🇫🇷 Paris 2,221 n/a
6
SOS Villages d'Enfantssosve.org

Providing family-like care and support to orphaned siblings, ensuring emotional and educational stability until independence worldwide.

Civic and Social Organizations 🇫🇷 Paris 2,197 1956
7
Hilti Francehilti.fr

Provides advanced tools, technologies, software, and services for the construction industry, helping clients build faster, safer, and more boldly worldwide, with a focus on innovation.

Construction 🇫🇷 Boulogne-Billancourt 1,675 1941
8
Fondation Adolphe de Rothschildfor.paris

Specializes in head and neck pathologies for adults and children, offering excellent care, research, and training at a conventional rate in Paris.

Hospitals and Health Care 🇫🇷 Paris 1,481 1905
9
Fondation Partage et Viefondationpartageetvie.org

A public utility Foundation providing care and support for individuals facing loss of autonomy, with 127 establishments across France Innovating and improving quality of life

Individual and Family Services 🇫🇷 Montrouge 1,183 n/a
10
Fondation INFAinfa-formation.com

The foundation provides professional training and qualifications in various sectors to help individuals, including the less qualified, access employment opportunities

Professional Training and Coaching 🇫🇷 Fontenay-sous-Bois 821 1945
11
Institut du Cerveau – Paris Brain Instituteinstitutducerveau.org

Research center focused on brain studies, developing treatments for neurological diseases through collaboration among patients, doctors, researchers, and entrepreneurs.

Biotechnology Research 🇫🇷 Paris 806 2010
12
Petits Frères des Pauvrespetitsfreresdespauvres.fr

fight elderly isolation and loneliness, support vulnerable seniors, promote social inclusion, and foster meaningful connections for aging individuals

Non-profit Organizations 🇫🇷 Paris 735 1946
13
SOLIHAsoliha.fr

Supports individuals, elderly, and disabled for better housing, energy transition, fights substandard homes, mobilizes private housing for social good, creates insertion housing, revitalizes neighborhoods.

Civic and Social Organizations 🇫🇷 Paris 734 2015
14
FONDATION LEOPOLD BELLANbellan.fr

The foundation manages 78 innovative establishments and services in various sectors including childcare, youth support, disability services, elderly care, and healthcare

Hospitals and Health Care 🇫🇷 Paris 726 1884
15
Fondation Des Amis de l'Atelierfondation-amisdelatelier.org

Dedicated to individuals with psychic and mental disabilities, offering specialized services including accommodation, care, educational support, and vocational integration within 66 facilities.

Mental Health Care 🇫🇷 Châtenay-Malabry 633 1961
16
FONDATION PERCE-NEIGEperce-neige.org

Provide specialized housing, support families, advocate for disabled individuals, support autism education, and promote research for people with disabilities.

Non-profit Organizations 🇫🇷 Levallois-Perret 620 1966
17
Fondation ANAISfondation-anais.org

Support personal development, social and professional integration for people with disabilities through medical-social services and economic activity programs.

Civic and Social Organizations 🇫🇷 Paris 604 1954
18
Fondation de l'Armée du Salutarmeedusalut.fr

Provide emergency aid, social reintegration, and prevention services through numerous establishments, supported by volunteers, employees, and donors.

Civic and Social Organizations 🇫🇷 Paris 583 1881
19
Fondation Santé des Etudiants de Francefsef.net

Providing comprehensive health support for adolescents and young adults, including psychiatric care, rehabilitation, prevention, social reinsertion, and hospital-university research programs.

Hospitals and Health Care 🇫🇷 Paris 541 1924
20
ACTION ENFANCEactionenfance.org

Foundation providing stable, protective environments for siblings separated from families, supporting their education, growth, and social integration.

Non-profit Organizations 🇫🇷 Paris 536 1943
21
PIERRE FABRE DERMO-COSMETIQUE

Development and distribution of dermo-cosmetic products focusing on skincare and beauty solutions based in France.

Personal Care Product Manufacturing 🇫🇷 Boulogne-Billancourt 518 n/a
22
Fondation La Vie au Grand Air I Priorité Enfancefondationlavieaugrandair.org

Support and protect over 4,200 children and families through social aid, fostering responsible adulthood with respect and solidarity.

Civic and Social Organizations 🇫🇷 Issy-les-Moulineaux 488 1927
23
FONDATION OEUVRE DE LA CROIX ST- SIMONcroix-saint-simon.org

A foundation providing a range of services to families from birth to end of life, catering to vulnerable populations through healthcare and education

Civic and Social Organizations 🇫🇷 Paris 487 1906
24
Fondation du Patrimoinefondation-patrimoine.org

Nonprofit organization supporting restoration and funding of rural and local heritage sites, aiding public owners, private landowners, and sponsors.

Non-profit Organizations 🇫🇷 Neuilly-sur-Seine 470 1996
25
Fondation de Francefondationdefrance.org

Encouraging and supporting diverse social projects through expert collaboration, volunteer engagement, and managing numerous foundations across France.

Fundraising 🇫🇷 Paris 428 1969

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26
FONDATION SANTE SERVICEfondation-santeservice.fr

Providing multidisciplinary home hospitalization and nursing care for acute and chronic patients, supporting family-centered care and healthcare professional training.

Hospitals and Health Care 🇫🇷 Levallois-Perret 419 1958
27
Hôpital Franco-Britanniquecognacq-jay-sante.fr

Private nonprofit hospital providing high quality medical services to patients of all ages with a dedicated professional team.

Hospitals and Health Care 🇫🇷 Levallois 413 n/a
28
Fondation COS Alexandre Glasbergfondationcos.org

The organization manages over 60 facilities in France to care for elderly, support individuals with disabilities, aid refugees, and assist those in extreme social precarity

Civic and Social Organizations 🇫🇷 Paris 396 1944
29
Jean Cotxet Foundationjean-cotxet.fr

A public utility association in Paris, founded in 1959, dedicated to protecting children with 33 facilities and 1000 employees serving 4000 individuals annually

Civic and Social Organizations 🇫🇷 Paris 395 1959
30
Hôpital Marie-Lannelonguehopitalmarielannelongue.fr

A non-profit private hospital specializing in surgical treatment of cardiac, pulmonary, and vascular conditions from newborns to adults

Hospitals and Health Care 🇫🇷 Le Plessis-Robinson 394 1948
31
FONDATION OLGA SPITZERfondationolgaspitzer.fr

An individual & family services company located in Paris, France, providing support and assistance to clients in various aspects of their lives

Civic and Social Organizations 🇫🇷 Paris 393 1923
32
Fondation Saint Jean de Dieufondation-saintjeandedieu.fr

Providing healthcare, social, and medico-social services to over 20,000 vulnerable individuals annually across multiple regions with dedicated staff.

Hospitals and Health Care 🇫🇷 Paris 357 2012
33
Les Diaconesses de Reuillylesdiaconesses.org

Nonprofit organization providing healthcare, social support, inclusion for disabled, elderly care, end-of-life assistance, and healthcare professional training.

Health and Human Services 🇫🇷 Versailles 354 1841
34
IRTS IDF MONTROUGE NEUILLY-SUR-MARNE MEAUXfondation-itsrs.org

Providing social work education, research, and training programs focused on professional qualifications and adapting social interventions to current needs.

Higher Education 🇫🇷 Montrouge 347 1901
35
Fondation Ellen Poidatzfondationpoidatz.com

Management of pediatric rehabilitation centers, support for disabled children and adults, adapted schooling, and research in healthcare innovation.

Hospitals and Health Care 🇫🇷 Chailly-en-Bière 329 1919
36
Institut du monde arabeimarabe.org

Cultural institution promoting Arab civilization, language, and development; fostering Franco-Arab exchanges in culture, science, and cooperation.

Artists and Writers 🇫🇷 Paris 302 1980
37
Fondation de Rothschildfondation-de-rothschild.fr

Supports vulnerable people, including elderly, children, and disabled adults, providing care, education, and rehabilitation services since 1852.

Hospitals and Health Care 🇫🇷 Paris 295 n/a
38
HOPITAL FORCILLES - Fondation Cognacq-Jayhopital-forcilles.cognacq-jay.fr

The company provides rehabilitation for patients with chronic diseases, cancer treatment expertise, and medical consultations for locals in Seine-et-Marne

Hospitals and Health Care 🇫🇷 Férolles-Attilly 278 1964
39
Ifri - Institut français des relations internationalesifri.org

Leading independent research institute in France, specializing in international affairs and global governance Conducts policy-oriented research, hosts debates, and publishes influential publications

Think Tanks 🇫🇷 Paris 275 1979
40
FONDATION FALRETfalret.org

Support for individuals with mental fragility through personalized care, social integration, employment assistance, and advocacy for mental health awareness.

Non-profit Organizations 🇫🇷 Pantin 273 1841
41
Fondation Cognacq-Jaycognacq-jay.fr

Provide healthcare, social protection, child welfare, and education services across multiple establishments supporting vulnerable individuals throughout life stages.

Civic and Social Organizations 🇫🇷 Paris 263 1916
42
Fondation l'Élan Retrouvéelan-retrouve.org

supporting disabled individuals through therapeutic work, promoting personal autonomy, social integration, and patient involvement in care decisions.

Mental Health Care 🇫🇷 Paris 260 1948
43
SeaBirdseabirdconseil.com

Consulting firm specializing in operational strategy, transformation, and performance improvement for insurance, banking, and asset management sectors with human-centered solutions.

Financial Services 🇫🇷 Paris 254 2005
44
Fondation pour le Logement des Défavorisésfondationpourlelogement.fr

Non-profit organization fighting housing insecurity, poverty, and exclusion, creating shelters and supporting over 500 associations to improve living conditions for disadvantaged individuals.

Non-profit Organizations 🇫🇷 Paris 218 1987
45
Cité internationale universitaire de Parisciup.fr

Provides housing and cultural exchange opportunities for students, researchers, artists, and athletes from over 150 nationalities in Paris.

Education Administration Programs 🇫🇷 Paris 216 1925
46
LEO Pharma Franceleo-pharma.fr

Helps patients achieve healthy skin by offering therapeutic solutions for managing skin problems globally, with a focus on skin disease medications and solutions.

Pharmaceutical Manufacturing 🇫🇷 Courbevoie 209 n/a
47
Servier Franceservier.com

French pharmaceutical group, world leader in cardiovascular treatment, developing innovative solutions for patient care and therapeutic adherence, with significant investment in R&D and local production.

Pharmaceutical Manufacturing 🇫🇷 193 1954
48
Mémorial de la Shoahmemorialdelashoah.org

A memorial in Paris educates new generations on the Holocaust to combat racism and intolerance through various activities and exhibits

Museums, Historical Sites, and Zoos 🇫🇷 Paris 185 2005
49
Art Exploraartexplora.org

International foundation promoting arts access, participation, and engagement through digital technology, partnerships, and innovative cultural experiences worldwide.

Non-profit Organizations 🇫🇷 Paris 179 2019
50
Fondation Louis Vuittonfondationlouisvuitton.fr

Promotion of art and culture through philanthropy, supporting creative initiatives, housed in architecturally significant building in Paris.

Museums, Historical Sites, and Zoos 🇫🇷 Paris 169 2006

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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.

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