| # | Company | Employees |
|---|---|---|
| 1 |
CHU de Nanteschu-nantes.fr
The company specializes in technical collaborations, continuing education, scientific research, and assistance for foreign patients in the field of international affairs |
5,305 |
| 2 | 5,175 | |
| 3 |
CHU d'Angerschu-angers.fr
A leading French healthcare institution providing healthcare, education, and research, employing over 6,800 staff with diverse specialties and career development opportunities |
2,754 |
| 4 |
Nantes Métropolelinktr.ee
This organization in Nantes and its metropolitan area aims to create a new development model, embracing solidarity, collaboration, creativity, and openness They provide updates on local news |
2,524 |
| 5 |
Caisse d'Epargne Bretagne Pays de Loirecaisse-epargne.fr
Regional mutualist bank with 420 agencies, serving individuals and professionals, supporting local economy through business centers and specialized subsidiaries. |
2,428 |
| 6 |
LNA Santélna-sante.com
Family-owned healthcare provider based in Nantes since 1990, offering care and support for individuals with fragility or loss of autonomy through various facilities |
2,080 |
| 7 |
Credit Agricole Atlantique Vendeecredit-agricole.fr
A cooperative bank supporting local economic development in Loire-Atlantique and Vendée, focusing on human-centered long-term vision with a successful dynamic |
1,851 |
| 8 |
Crédit Agricole Anjou Maineca-anjou-maine.fr
Regional banking and insurance partner for individuals, private banking clients, professionals, businesses, and farmers, offering diverse career opportunities and employee development. |
1,760 |
| 9 |
MAISON DES AGES ET DES CULTURESmdac.fr
Non-profit association based in Legé, France, focused on promoting intergenerational and intercultural exchanges and activities within the community |
1,530 |
| 10 | 1,476 | |
| 11 | 1,326 | |
| 12 |
Centre Hospitalier du Mansch-lemans.fr
Provides comprehensive healthcare services with 1658 beds, offering general medical, surgical, and emergency care to patients. |
1,305 |
| 13 |
Crédit Mutuel Océancreditmutuel.fr
Local mutualist bank with 1,500 employees, 177 branches, strong internal growth, training focus, and client-centered approach in western France. |
1,011 |
| 14 |
Hôpitaux de Vendéechd-vendee.fr
A network of 7 hospitals in Vendée, France, providing healthcare services with a total of 4,600 beds and 8,500 staff members |
873 |
| 15 |
Séché Environnementgroupe-seche.com
Séché Environnement is a leading independent environmental services operator focusing on circular economy, waste management, and global pollution solutions with sustainable development values |
831 |
| 16 |
Association Hospitalière Sainte-Marieahsm.fr
Provides comprehensive psychiatric care, prevention, and post-cure services, along with social and medico-social support for fragile individuals, including the elderly. |
795 |
| 17 |
Crédit Mutuel de Maine-Anjou et Basse-Normandiecreditmutuel.fr
Credit Mutuel MABN is a regional bank prioritizing internal growth, providing personalized service to clients through training, mobility, and decision-making empowerment |
790 |
| 18 |
Semitansemitan.fr
A public-private entity managing public transport in Nantes, overseeing network construction, renovation, and coordination of all mobility services in the region |
727 |
| 19 |
Centre Hospitalier de Saint-Nazairehopital-saintnazaire.fr
Public hospital providing extensive medical, surgical, emergency, mental health, elderly care, and preventive services across multiple regional sites. |
669 |
| 20 |
L'Hôpital Privé du Confluent - Vivalto Santéhopitalpriveconfluent.vivalto-sante.com
It offers consultation and hospitalization in short-stay medicine, surgery, oncology, and cardiology, with 24/7 emergency services, employing 200 practitioners and 1,100 employees. |
644 |
| 21 |
Institut de Cancérologie de l'Ouest (ICO)institut-cancerologie-ouest.com
A Hospital and Health Care company located in Angers, France, specializing in cancer treatment and care services |
632 |
| 22 |
Centre Hospitalier de Choletch-cholet.fr
Recruitment of medical and non-medical personnel for hospital activities including acute care, rehabilitation, psychiatry, and elderly care facilities. |
608 |
| 23 |
Crédit Mutuel Loire Atlantique Centre Ouestcreditmutuel.fr
Offers banking, insurance, mobile, automotive, and real estate services to individuals, businesses, and associations, supporting local projects and economy. |
525 |
| 24 |
EPSM de la Sartheepsm-sarthe.fr
Public mental health institution providing prevention, diagnosis, and ambulatory psychiatric care for all ages across Sarthe department. |
480 |
| 25 |
CPAM de Lille-Douaiameli.fr
Manages health, maternity, work accidents, and occupational diseases for beneficiaries. Engages with health professionals and employers, providing public service for social protection. |
447 |
| 26 |
VYV 3 Pays de la Loirepdl.vyv3.fr
A non-profit mutualist organization in Pays de la Loire region managing healthcare services for all ages, focusing on quality, affordability, and accessibility |
434 |
| 27 |
UGECAM Bretagne Pays de la Loiregroupe-ugecam.fr
Health operator in France, the company provides healthcare, rehabilitation, and reintegration services in Bretagne and Pays de la Loire regions, managing 13 facilities with 1540 beds |
427 |
| 28 |
EBTransebtrans.com
A European leader in transport and logistics of sensitive materials, offering tailored services in over 14 countries with a focus on respect, safety, and responsibility |
422 |
| 29 | 412 | |
| 30 |
Air France HOPwwws.airfrance.fr
Regional airline subsidiary operating daily flights to over one hundred French and European destinations, formed by merging three regional carriers. |
408 |
| 31 |
Centre hospitalier de Lavalchlaval.fr
The company is a healthcare facility in the Pays de la Loire region, serving a population of 340,000 with a team of 2,500 healthcare professionals |
403 |
| 32 |
Centre Hospitalier Georges Mazurellech-mazurelle.fr
Specialized mental health care for children, young people, adults, and elderly persons, providing support and treatment across all ages. |
388 |
| 33 |
SDIS49 Sapeurs-pompiers de Maine-et-Loiresdis49.fr
An administrative public institution in Maine-et-Loire providing emergency response and prevention services with 76 fire and rescue centers and over 3250 staff |
383 |
| 34 | 380 | |
| 35 |
Centre de Santé Mentale Angevin (CESAME)ch-cesame-angers.fr
This public mental health institution provides psychiatric care to children, adolescents, and adults in the Maine-et-Loire department through various treatment facilities |
354 |
| 36 |
Clinique de l'Anjouclinique-anjou.fr
A leading French healthcare facility offering comprehensive hospital and emergency services, including a Level 2A maternity ward, with a reputation for excellence and certifications in quality and environmental management |
349 |
| 37 |
Assurance Maladie de Loire-Atlantique (CPAM)cpam44.fr
The company supports over 1 million individuals with healthcare expenses, wellbeing preservation, care coordination, and enhanced protection in difficult situations |
332 |
| 38 |
Santé Atlantiquesanteatlantique.fr
Santé Atlantique provides comprehensive and excellent healthcare services, offering a wide range of medical specialties with 1,500 healthcare professionals |
319 |
| 39 |
Crédit Mutuel Anjoucreditmutuel.fr
A local cooperative bank focused on serving its members, providing a diverse range of services, supporting the community, and prioritizing client interests |
309 |
| 40 |
Clinique Bretéchéelsan.care
A human-sized healthcare facility in Nantes city center, offering scheduled hospitalizations and maternity services to patients |
220 |
| 41 | 215 | |
| 42 |
GIE SESAM-Vitalesesam-vitale.fr
Development and management of secure digital healthcare solutions including electronic health records, insurance data exchange, and telemedicine services in France. |
211 |
| 43 |
Pôle Santé Sud - ELSANelsan.care
Offers comprehensive medical and surgical services, including advanced surgery, medical care, mental health, maternity, and emergency services, utilizing state-of-the-art technical facilities. |
202 |
| 44 |
LABORATOIRE SYNLAB BIOLIANCEbioliance.fr
Network of medical laboratories providing prevention, diagnostic, and follow-up biological analyses across Nantes metropolitan area and surrounding regions. |
193 |
| 45 |
CPAM de Maine-et-Loire (Assurance Maladie)lasecurecrute.fr
A company in Maine-et-Loire with 600 employees aims to provide access to quality healthcare for all, regardless of age or income, as part of the Social Security system |
190 |
| 46 |
Polyclinique du Parc - Vivalto Santépolycliniqueduparc.vivalto-sante.com
Established in 1974, this multidisciplinary healthcare facility offers a wide range of medical services with 315 beds and over 35 specialties Joined Vivalto Santé group in 2019 |
187 |
| 47 |
CPAM de la Sarthe (Assurance Maladie)assurance-maladie.ameli.fr
A collective committed to protecting the health of over 60 million insured individuals by ensuring access to healthcare, reimbursement, prevention, and improving the healthcare system |
186 |
| 48 |
CapAtlantique La Baule-Guérande Agglocap-atlantique.fr
A local government organization managing 15 communes with 75,000 residents, focusing on preserving natural resources and serving the community in Loire-Atlantique and Morbihan |
175 |
| 49 |
V.Ships Francevgrouplimited.com
Established in 2001, specializing in ship management for the tanker, bulker, and gas sectors, providing technical, risk management, procurement, and financial services |
171 |
| 50 |
Terres de Montaiguterresdemontaigu.fr
Nine municipalities collaborating to boost business growth and provide quality services and facilities to over 50,000 residents in the region. |
168 |
| 51 |
Clinique Mutualiste de L'Estuaireclinique-mutualiste-estuaire.fr
A 240-bed facility with over 450 professionals offering comprehensive medical care, including surgery, oncology, medicine, and specialized services for obese patients |
166 |
| 52 |
Knutsen LNG Franceknutsenoas.com
A subsidiary of Knutsen OAS Shipping managing LNG carriers sailing under the RIF Flag with French officers from a French office |
165 |
| 53 |
Nantes-Saint Nazaire Portport.fr
Public enterprise corporation managing port operations, linking land and sea, providing logistical platform, and contributing to regional economic development and employment. |
158 |
| 54 |
AGENEAU Groupageneau.fr
Family-owned transportation company with 550 employees and 350 vehicles, specializing in on-demand logistics services for industrial, agri-food, and specialized goods in France and internationally |
156 |
| 55 |
Setram Le Manssetram.fr
operation of urban public transport including buses, trams, mobility services for disabled, demand transport, and carpooling application |
151 |
| 56 |
Irigo Angersirigo.fr
Irigo network is the public transportation network in Angers Managed by RD Angers under a public service delegation contract |
146 |
| 57 |
CPAM de la Vendée (Assurance Maladie)assurance-maladie.ameli.fr
Working at this health insurance organization means committing to protecting the health of over 60 million policyholders by providing access to care and improving the healthcare system |
140 |
| 58 |
Transports SALESKYsalesky.fr
Specializing in cold chain logistics, offering temperature-controlled transport for fresh products with real-time cold chain traceability Committed to quality service and eco-friendly vehicles |
134 |
| 59 |
HAD - Hôpital à Domicile Nantes & régionhad-nantesetregion.fr
L’HAD Nantes & région provides medical and paramedical care at home to avoid hospitalization, with a focus on patient-centered and humanistic approach |
131 |
| 60 |
Centre Hospitalier Sèvre et Loirehopital-sevre-loire.fr
A public health institution providing care and accommodation for adults, specializing in services for the elderly, polyhandicapped adults, and addictology |
127 |
| 61 |
Clinique Saint Charles (Vendée)clinique-saint-charles.fr
A company located in La Roche-sur-Yon, focussing on business activities related to the mentioned address at 11 boulevard René Levesque |
119 |
| 62 |
POLYCLINIQUE DU MAINEpolyclinique-maine.fr
A private medical-surgical facility in Mayenne, France, focusing on quality care, technology, and patient satisfaction within a group fostering collaboration and innovation |
117 |
| 63 |
Aéroport Nantes Atlantiquenantes.aeroport.fr
Regional airport offering direct flights to over 90 destinations, passenger support services, and committed to environmental sustainability and carbon reduction. |
116 |
| 64 |
Keolis Territoire Pays de la Loirekeolis-atlantique.com
A subsidiary of KEOLIS, specializing in interurban passenger transport and maintenance of nearly 500 coaches in western France |
114 |
| 65 |
HOSPI GRAND OUESThospigrandouest.fr
Groups health establishments, including clinics and rehabilitation centers, offering quality, safe, innovative, and benevolent care accessible to all. |
110 |
| 66 |
VENDEE EAUvendee-eau.fr
Organizes production and distribution of potable water for 19 communities in Vendée, managing public water service for 60 years. |
105 |
| 67 |
Etablissement de Santé Baugeois Valléeesbv.fr
A healthcare establishment located in Maine-et-Loire, formed from the merger of local hospitals and retirement homes in 2001 and 2005 |
102 |
| 68 |
SOVETOURSsovetours.com
A transportation company in Pays de la Loire with 40 years of experience, focusing on providing quality service, job stability, and fostering a collaborative work environment |
100 |
| 69 |
Etoile Routièremalherbe.fr
Specialist in temperature-controlled transport and logistics, combining advanced technology with flexibility, safety, and environmental compliance since 1949. |
96 |
| 70 |
Monamiligomonamiligo.fr
Specialist in local mobility, offering specialized transport, school transport, and on-demand transport services in the western region of France |
93 |
| 71 |
Polyclinique de l'Europe - Vivalto Santépolycliniqueeurope-stnazaire.vivalto-sante.com
Multidisciplinary medical facility providing advanced surgical and cardiological care, oncology network participation, patient satisfaction focus, and cutting-edge technical equipment. |
92 |
| 72 |
Territoire d'énergie Loire-Atlantique (TE44)te44.fr
Manages public electricity and gas distribution networks, maintains street lighting, invests in renewable energy infrastructure, and operates electric vehicle charging stations. |
92 |
| 73 |
FONDATION GEORGES COULONfondation-gcoulon.fr
Management of healthcare and medico-social facilities including nursing homes, rehabilitation centers, specialized Alzheimer care, employing nearly 500 staff. |
90 |
| 74 |
LES APSYADESlesapsyades.fr
Network of specialized psychiatric and addiction treatment facilities providing mental health and addiction care services in Loire-Atlantique. |
90 |
| 75 |
HOPITAL INTERCOMMUNAL DU PAYS DE RETZhipr44.com
The company operates a healthcare facility and 4 nursing homes, providing various health services such as medicine, rehabilitation, and care for Alzheimer's patients |
89 |
| 76 |
Centre Hospitalier Intercommunal Lys Hyrôme - CHI Lys Hyrômechi-lyshyrome.com
Public health institution offering a range of medical services various locations, including medicine, rehabilitation, long-term care, and specialized units for elderly and disabled individuals |
88 |
| 77 |
Siéml - Syndicat intercommunal d'énergies de Maine-et-Loiresieml.fr
An intermunicipal energy syndicate in Maine-et-Loire, managing public electricity distribution, gas services, street lighting, renewable energy, and fiber optic deployment |
87 |
| 78 |
Hôpital Intercommunal de la Presqu'Ilehli-presquile.fr
A healthcare facility located in the Presqu'Ile region, providing quality care to patients with over 500 staff members across various departments |
87 |
| 79 |
CPAM de la Mayenne (Assurance Maladie)assurance-maladie.ameli.fr
A health insurance company in Mayenne, France, supports 250,000 individuals with healthcare expenses, promoting well-being and providing assistance during difficult times |
86 |
| 80 |
Compagnie Maritime Nantaise - MNcompagnie-maritime-nantaise.com
Specialized industrial maritime transport including ship design, construction, acquisition, management, and international operation under a strong financial and technical group. |
85 |
| 81 |
Clinique Saint Léonardcliniquesaintleonard.fr
The company specializes in orthopedic surgery, offering 10 specialties, a research center, and cutting-edge technical facilities to ensure high-quality patient care. |
83 |
| 82 |
HAD VENDEEhadvendee.com
A home hospitalization facility in Vendée providing medical care at home, allowing patients to stay with loved ones while ensuring quality, accessible, and personalized healthcare |
83 |
| 83 |
Stranyceo-mobilite.fr
The company works to provide sustainable and inclusive public transportation services, promoting green mobility, behavior change, and decarbonization in partnership with local territories |
81 |
| 84 |
SMR et EHPAD La Chimotaie MGEN Groupe VYVproximite.mgen.fr
The company operates a 106-bed hospital offering various specialized care services, including palliative care and cancer care, along with an 83-bed nursing home |
72 |
| 85 |
Communauté de communes Sud Estuairecc-sudestuaire.fr
A community located on the Atlantic coast near Nantes and St-Nazaire, focusing on sustainable development, family support, and preserving natural resources |
62 |
| 86 |
KEOLIS ATLANTIQUEkeolis-atlantique.com
Keolis Atlantique, a subsidiary of Keolis Group, specializes in passenger transport services in Pays de la Loire and southern Brittany, operating services and maintaining a large fleet of buses |
58 |
| 87 |
Clinique Sainte-Marie - Vivalto Santécliniquechateaubriant.com
A medical practice company located in Châteaubriant, France, providing healthcare services to the local community |
55 |
| 88 |
Groupe Public Hospitalier et Médico-social des Collines Vendéenneshopital-chataigneraie.fr
Healthcare facility offering medical services, rehabilitation, long-term care, palliative care, Alzheimer's unit, day care, and specialized housing for disabled individuals |
54 |
| 89 |
Voyages QUERARDvoyages-querard.com
The company offers passenger transportation services in Loire-Atlantique, including school transport, airport shuttles, intercity and urban lines, and occasional/tourist travel with 280 employees |
54 |
| 90 |
Crédit Maritime Grand Ouestcreditmaritime.fr
A cooperative bank exclusively dedicated to supporting economic development, offering banking and insurance services for individuals and businesses on the French coastline |
51 |
| 91 |
EHPAD Résidences Les Ligérienneslesligeriennes.fr
A company that operates five senior residences providing continuous care and services, including medical support, activities, and specialized units for dependent elderly individuals |
48 |
| 92 |
Centre Hospitalier de la Corniche Angevine (CHCA)chca.fr
A public health facility offering a range of medical services, including 216 beds for various care, with guidelines for respectful online interaction |
48 |
| 93 |
Centre Jean Bernardi-l-c.fr
Specialized facility offering oncology, radiotherapy, hematology, and nuclear medicine services for cancer treatment and care |
45 |
| 94 |
Centre de Cancérologie de la Sarthe
A comprehensive cancer center in Sarthe, France, offering innovative treatments, a patient-centered approach, and a supportive environment for patients and their families |
44 |
| 95 |
Voisin Servicesvoisin-services.com
Transportation company offering regular and occasional passenger services through multiple subsidiaries and travel agencies, using a fleet of Grand Tourisme vehicles |
43 |
| 96 |
ILC - Institut inter-régionaL de Cancérologiei-l-c.fr
A leading institute with 6 centers dedicated to cancer treatment |
39 |
| 97 |
Centre Hospitalier Layon Aubancelayon-aubance.fr
A healthcare organization offering a range of medical and social services including palliative care, rehabilitation, and housing for elderly residents on multiple sites |
38 |
| 98 |
SOGEBRASsogebras.com
A port operations company in Montoir, Saint-Nazaire, and Nantes, offering services such as ship agency, stevedoring, forwarding, customs clearance, logistics, and warehousing |
36 |
| 99 |
PHGNS Pôle Hospitalier et Gérontologique Nord-Sarthe
A public health establishment in the Sarthe department with three merged sites offering hospitalization, medical-social accommodation, home support, and radiology services |
34 |
| 100 |
Amaline Assurancesgroupama.fr
Specializes in managing national partnerships and providing delegated commercial services to support Groupama's position in the French insurance market. |
33 |
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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 Oct 24, 2026.
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