This list contains public sector organizations in Ille-et-Vilaine, primarily based in Rennes. It features a mix of large institutions and specialized agencies. Key organizations include Université de Rennes I, a multidisciplinary university; CHU de Rennes, a large public hospital; Rennes Ville et Métropole, focusing on urban development and public services; and Région Bretagne, managing regional affairs like education and transport.
The data shows a strong concentration of headquarters in Rennes, indicating its role as the administrative and academic hub of the department. The organizations cover a wide range of public services, including higher education, healthcare, government administration, IT services, and social housing.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Université de Rennes Iuniv-rennes.fr
Multidisciplinary university focusing on dynamic research, lifelong learning, societal challenges, and regional socio-economic and cultural development through partnerships. |
4,002 | |||
| 2 |
CHU de Renneschu-rennes.fr
Large French public hospital offering extensive medical, surgical, and obstetrical services, advanced diagnostics, research, and medical training to the population. |
3,470 | |||
| 3 |
Université Rennes 2univ-rennes2.fr
Higher education and research focused on arts, humanities, social sciences, languages, communication, psychology, education, sociology, geography, history, and sports. |
2,286 | |||
| 4 |
Rennes Ville et Métropolerennes.fr
Fosters economic, urban development, attracting talent and students. Provides diverse public services through 5300 agents, focusing on quality of life and professional growth. |
1,828 | |||
| 5 |
Région Bretagnebretagne.bzh
Elected assembly managing Brittany's daily life and future through education, transport, economic development, planning, culture, sports, and environment. |
1,529 | |||
| 6 |
EHESP - École des hautes études en santé publiqueehesp.fr
A public institution offering a wide range of training programs in public health, with a strong focus on research and international partnerships |
1,474 | |||
| 7 |
Département d'Ille-et-Vilaineille-et-vilaine.fr
Management of social services, education, infrastructure, environment, and culture with a focus on solidarity and regional development. |
994 | |||
| 8 |
CENTRE HOSPITALIER GUILLAUME REGNIERch-guillaumeregnier.fr
Provides prevention, diagnosis, treatment, rehabilitation, social reintegration, research, and education in adult and child psychiatry sectors. |
679 | |||
| 9 |
SIB [numérique, santé et secteur public]sib.fr
Innovative cooperative in digital health and public sector, serving 620+ institutions in modernizing their IT systems with a wide range of services and expertise |
499 | |||
| 10 |
INSA Rennesinsa-rennes.nous-recrutons.fr
Provides five-year post-baccalaureate engineering education with strong research in information technologies and materials science in Brittany, France. |
483 | |||
| 11 |
Chambre d'agriculture de Bretagnebretagne.chambres-agriculture.fr
Representing farmers, providing expertise to public services and local authorities, supporting farmers in business development and professional adaptation. |
439 | |||
| 12 |
Carsat Bretagnecarsat-bretagne.fr
French social security body, retirement benefits, occupational risk prevention, support for vulnerable individuals, senior citizens' assistance. Regional economic player. |
418 | |||
| 13 |
Faculté des Métiersfac-metiers.fr
Offers vocational apprenticeship training across 12 sectors, certifying 64 professions with 108 diplomas for over 3,600 young individuals and 3,000 adults annually. |
395 | |||
| 14 |
SDIS 35 -Service départemental d'incendie et de secours d'Ille-et-Vilainesapeurs-pompiers35.fr
The company is a public department in charge of emergency rescue missions, risk analysis, emergency response coordination, prevention, and firefighting |
394 | |||
| 15 | 324 | ||||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Groupe Hospitalier Rance-Emeraudegh-re.fr
Healthcare network including hospitals in Saint-Malo, Dinan, and Cancale, providing emergency, surgery, medicine, obstetrics, and elderly care services. |
316 | |||
| 17 |
Institut d'études politiques de Rennessciencespo-rennes.fr
An institution of higher education providing multidisciplinary training to students for roles in public, private, and non-profit sectors, nationally and internationally |
277 | |||
| 18 |
Urssaf Bretagnebretagne.urssaf.fr
A private organization with a public service mission, the company collects social contributions, promotes employment policies, and assists businesses with payment difficulties |
259 | |||
| 19 |
Agence régionale de santé Bretagnesante.fr
The regional health agency in Brittany implements health policies, from prevention to medical care, in line with national guidelines and local input |
257 | |||
| 20 |
CCI Ille-et-Vilainebretagne.cci.fr
Support and accelerate over 60,000 local businesses through project assistance, training, innovation, ecological transition, and managing key regional infrastructure. |
251 | |||
| 21 |
Assurance Maladie Ille-et-Vilaine (CPAM)ameli.fr
Private organization carrying out public service missions in health insurance in Ille-et-Vilaine, ensuring access to healthcare, promoting health preservation, and improving healthcare effectiveness |
241 | |||
| 22 |
Chambre de Métiers et de l'Artisanat de Bretagnecma-bretagne.fr
Support and advice for artisans and future artisans through training, business creation, development, and cessation formalities in Brittany. |
227 | |||
| 23 |
DREAL Bretagnebretagne.developpement-durable.gouv.fr
The company works on environmental, housing, and development policies in Brittany region, promoting sustainable development through expertise, partnerships, and citizen engagement |
224 | |||
| 24 | 222 | ||||
| 25 |
Archipel habitatarchipel-habitat.fr
public housing office managing 17,000 social housing units, serving 30,000 residents, ensuring quality service and property care |
202 | |||
| 26 |
Centre Hospitalier de Fougèresch-fougeres.fr
A hospital in Fougères offering a wide range of medical services, specialized consultations, and a care facility for the elderly |
199 | |||
| 27 |
CDG 35 (Centre de Gestion de la Fonction Publique Territoriale d'Ille et Vilaine)cdg35.fr
Recruitment and training of job seekers, students, and employees to meet temporary needs of local public authorities with professional development. |
191 | |||
| 28 |
GRETA-CFA Est-Bretagnelinktr.ee
A vocational training center in Brittany offering personalized support and a variety of courses in different sectors for professionals, job seekers, and youth |
182 | |||
| 29 |
Caf d'Ille-et-Vilainecaf.fr
A private company providing public services to support families, fight against social inequalities, and promote social cohesion in Ille-et-Vilaine, France |
171 | |||
| 30 |
École normale supérieure de Rennesens-rennes.fr
The company is a public institution focused on training high-level scientific leaders for public service careers through interdisciplinary education and international collaborations |
165 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 13, 2026.
More company lists in the Ille-et-Vilaine department
- The largest companies in the Ille-et-Vilaine department 1,454
- Companies with in-house R&D in the Ille-et-Vilaine department 152
- Retail chains in the Ille-et-Vilaine department 135
- Multinational companies in the Ille-et-Vilaine department 118
- Manufacturers in the Ille-et-Vilaine department 100
- Professional services firms in the Ille-et-Vilaine department 94
- SaaS companies in the Ille-et-Vilaine department 85
- Family-owned companies in the Ille-et-Vilaine department 81
- Software Development companies in the Ille-et-Vilaine department 80
- IT Services and IT Consulting companies in the Ille-et-Vilaine department 67
- IT services companies in the Ille-et-Vilaine department 65
- Hardware manufacturers in the Ille-et-Vilaine department 61
- Education providers in the Ille-et-Vilaine department 60
- Distributors and wholesalers in the Ille-et-Vilaine department 58
- Consulting firms in the Ille-et-Vilaine department 54
- Food and Beverage Manufacturing companies in the Ille-et-Vilaine department 46
- Retail companies in the Ille-et-Vilaine department 46
- Critical infrastructure operators in the Ille-et-Vilaine department 45
- Financial services firms in the Ille-et-Vilaine department 45
- Subscription businesses in the Ille-et-Vilaine department 45
- Construction companies in the Ille-et-Vilaine department 43
- Law Practice companies in the Ille-et-Vilaine department 43
- Higher Education companies in the Ille-et-Vilaine department 41
- Legal Services companies in the Ille-et-Vilaine department 41
The same list elsewhere in France
- Public sector organisations in France 4,003
- Public sector organisations in Île-de-France 989
- Public sector organisations in Auvergne-Rhône-Alpes 451
- Public sector organisations in Grand Est 430
- Public sector organisations in Provence-Alpes-Côte d'Azur 384
- Public sector organisations in Occitanie 316
- Public sector organisations in Nouvelle-Aquitaine 310
- Public sector organisations in Hauts-de-France 261
- Public sector organisations in Pays de la Loire 185
- Public sector organisations in the Bouches-du-Rhône department 183
- Public sector organisations in Normandy 166
- Public sector organisations in Brittany 165
- Public sector organisations in the Nord department 135
- Public sector organisations in Bourgogne-Franche-Comté 130
- Public sector organisations in Centre-Val de Loire 120
- Public sector organisations in the Rhône department 120
- Public sector organisations in the Haute-Garonne department 110
- Public sector organisations in the Gironde department 109
- Public sector organisations in the Hauts-de-Seine department 95
- Public sector organisations in the Seine-Saint-Denis department 91
- Public sector organisations in the Isère department 80
- Public sector organisations in Paris 457
- Public sector organisations in Marseille 103
- Public sector organisations in Toulouse 83