| # | Company | Employees |
|---|---|---|
| 1 |
Crédit Mutuel Arkéacm-arkea.com
Cooperative banking group with specialized subsidiaries in banking, finance, insurance, and real estate, serving 3.2 million members and clients across 19 French regions. |
8,676 |
| 2 |
Vivalto Santévivalto-sante.fr
Operates a network of healthcare facilities across Europe, providing comprehensive patient care. Engages in medical partnerships and sustainable practices. |
4,612 |
| 3 |
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 |
| 4 |
Banque Populaire Grand Ouestbanquepopulaire.fr
Cooperative regional bank supporting entrepreneurs, artisans, and businesses across seven departments, fostering economic development through financial and human expertise. |
2,642 |
| 5 |
CHU de Brestchu-brest.fr
Leading healthcare institution in western Brittany with extensive medical, surgical, oncology, psychiatric, geriatric, pediatric, and gynecological services across multiple sites. |
2,597 |
| 6 |
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 |
| 7 |
Brittany Ferriesbrittany-ferries.com
The company reveals stunning coastal destinations across Western Europe, highlighting the beauty of the region's shorelines |
1,559 |
| 8 |
Crédit Agricole d'Ille-et-Vilainecredit-agricole.fr
Provides banking and financial services to over 530,000 clients with 119 branches and 1,500 employees in Ille-et-Vilaine. |
1,332 |
| 9 |
Brest Métropolebrest.fr
Brest métropole océane is a voluntary urban community in western Brittany, anchoring a region with 90 towns and 300,000 residents |
1,072 |
| 10 |
Crédit Mutuel de Bretagnecmb.fr
Provides comprehensive banking, financial, insurance products with strong local involvement, supporting individuals, businesses, and communities in Brittany region. |
1,062 |
| 11 |
Crédit Agricole du Finistèrecredit-agricole.fr
Mutualist cooperative bank focusing on local economic development, supporting businesses, investing in excellence, and prioritizing local financing solutions. |
964 |
| 12 |
Crédit Agricole du Morbihanca-morbihan.fr
Recruitment and sourcing of motivated candidates for a regional, multichannel bank focused on proximity, responsibility, and solidarity values. |
933 |
| 13 |
Crédit Agricole des Côtes d'Armorcredit-agricole.fr
Universal bank emphasizing local relationships, employee development, social responsibility, and active involvement in community and environmental initiatives. |
872 |
| 14 |
CENTRE HOSPITALIER GUILLAUME REGNIERch-guillaumeregnier.fr
Provides prevention, diagnosis, treatment, rehabilitation, social reintegration, research, and education in adult and child psychiatry sectors. |
679 |
| 15 |
Arkéa Banque Entreprises et Institutionnelsarkea-banque-ei.com
Specializes in providing tailored financial solutions, credit, and advisory services to businesses and institutional clients across various sectors. |
546 |
| 16 |
Centre hospitalier de Cornouaille Quimper-Concarneauch-cornouaille.fr
Regional hospital network providing surgery, medicine, obstetrics, geriatrics, cancer care, rehabilitation, and coordinated patient care with advanced medical technology. |
478 |
| 17 |
GROUPE HOSPITALIER BRETAGNE SUDghbs.bzh
Public healthcare institution in South Brittany offering extensive medical care, training, research, and partnerships across multiple sites. |
478 |
| 18 |
Saint-Brieuc Armor Agglomérationsaintbrieuc-armor-agglo.bzh
In the heart of Northern Brittany, Saint-Brieuc Armor Agglomération fosters innovation and research, offering financial aid and support to local businesses for economic growth |
452 |
| 19 |
EPSM Caenepsm-caen.fr
Provides mental health services across Calvados for all ages, including specialized care, prevention, and support for vulnerable populations. |
442 |
| 20 |
Service Départemental d'Incendie et de Secours du Morbihan (SDIS56)sdis56.fr
The Departmental Fire and Rescue Service operates 65 fire stations in three districts, managing over 45,000 emergency interventions annually |
401 |
| 21 |
Hôpital Psychiatrique Saint-Jean de Dieu
A psychiatric hospital based in France that provides medical services and practices for patients in need of mental health care |
384 |
| 22 |
Keolis Rennes Métropolekeolis-rennes-metropole.com
Manages and operates various urban transport networks in Rennes, including buses and metros, with a focus on daily passenger services. |
368 |
| 23 |
Malherbemalherbe.fr
French leader in general freight transport, offering tailored solutions for logistics, transport organization, and vehicle rental with drivers across various sectors. |
364 |
| 24 |
EPSM Morbihanepsm-morbihan.fr
Provides psychiatric care for children, adolescents, adults, and elderly, managing health and social structures across eastern Morbihan with a focus on specialized services and partnerships. |
360 |
| 25 |
Hôpital de Saint-Brieucghtarmor.bzh
Provides specialized medical care including surgery, maternity, neonatology, dialysis, oncology, and advanced consultations across two hospital sites in Brittany. |
355 |
| 26 |
Fondation ILDYSildys.org
Nonprofit foundation providing healthcare, rehabilitation, disability support, child protection, and elderly care with strong regional presence and social values. |
354 |
| 27 |
Fondation AUB Santéaub-sante.fr
Nonprofit healthcare organization specializing in chronic kidney disease treatment, home care services, and professional training in dialysis and patient support. |
353 |
| 28 |
CENTRE HOSPITALIER DES PAYS DE MORLAIXch-morlaix.fr
Comprehensive medical, surgical, obstetric, psychiatric, and rehabilitation services with specialized oncology, geriatrics, maternity, pediatrics, and medico-social care across multiple locations. |
332 |
| 29 |
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 |
| 30 |
Suravenirsuravenir.fr
Established in 1984, a leading provider in France offering life and personal protection insurance, specializing in life insurance, personal protection policies, and retirement savings plans |
298 |
| 31 |
Hospitalité Saint-Thomas de Villeneuvehstv.fr
A non-profit organization comprising 15 healthcare and social facilities, providing care for vulnerable individuals across Brittany, Provence, and Pays-de-la-Loire regions |
288 |
| 32 |
Clinique Mutualiste La Sagesseclinique-rennes.fr
A healthcare facility with 220 beds and over 550 professionals offering specialized care in mother-child, cancer surgeries, medical specialties, and chronic pain management |
268 |
| 33 |
Fondation Saint-Hélierpole-sthelier.fr
The company is a well-known actor in the healthcare and social services sector, providing a wide range of medical, rehabilitation, and support services |
260 |
| 34 |
EPSM du Finistère Sudepsm-quimper.fr
Public mental health facility located in Quimper, providing mental health services and support to individuals in need |
258 |
| 35 |
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 |
| 36 |
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 |
| 37 |
Lamballe Terre & Mer Agglomérationlamballe-terre-mer.bzh
A community of 38 municipalities with a population of 69,000 residents, offering diverse sectors, coastline, ports, natural spaces, tourism office, and social welfare services |
233 |
| 38 |
CERP Bretagne Atlantiquecerpba.com
Supports pharmacists with rapid, reliable, and secure medication and medical specialty delivery. Offers a complete ecosystem including logistics, group purchasing, and training for healthcare professionals. |
232 |
| 39 |
Dinan Agglomérationdinan-agglomeration.fr
Management and development of a large intercommunal area in Northern Brittany, covering 65 communes and serving over 100,000 residents. |
208 |
| 40 |
Association Hospitalière de Bretagneahbretagne.com
An organization in Brittany, France, with 1,200 professionals serving vulnerable populations in mental health, addiction, elderly care, disability, prevention, and social integration |
206 |
| 41 |
Brocéliande Atlantiquech-bretagne-atlantique.fr
A healthcare group serving 400,000 residents with 6,000 health professionals, 400 doctors, 3,700 beds, and 93,000 ER visits annually |
205 |
| 42 |
Centre Mutualiste de Kerpapecentre-kerpape.fr
A healthcare facility in Ploemeur specializing in functional rehabilitation, physical and rehabilitation medicine for adults and children with various medical conditions |
200 |
| 43 |
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 |
| 44 |
Fondation Bon Sauveur Côtes d'Armorfondationbonsauveur.com
A non-profit organization in Côtes-d'Armor, France, providing mental health services and social support to residents of the region |
191 |
| 45 |
Groupe Hospitalier Centre Bretagnech-centre-bretagne.fr
Public healthcare institution offering modern medical, surgical, rehabilitation, and accommodation services across multiple sites for 142,000 residents. |
181 |
| 46 |
VYV 3 Bretagnebretagne.vyv3.fr
A regional union managing over 180 mutual support facilities in Brittany, offering a wide range of health and social services including rehabilitation, care for the elderly, and childcare |
176 |
| 47 |
Hôpital Privé Océaneelsan.care
A medical and surgical facility with advanced technology, specializing in outpatient care and offering home hospitalization services, including a hand emergency service |
173 |
| 48 |
Arkéa Investment Servicesarkea-is.com
Asset management company combining financial and extra-financial performance, offering diverse investment solutions for individual and institutional clients. |
171 |
| 49 |
ENGIE BiOZbioz-biomethane.com
Initiates, develops, finances, builds, and operates biomethane injection units for the French gas network, utilizing local organic matter. |
166 |
| 50 |
Ouest Biologieouest-biologie.com
Independent network of medical biology laboratories in Brittany and Normandy. Provides routine and specialized biological tests, supporting local healthcare needs for patients and professionals. |
155 |
| 51 |
Auray Quiberon Terre Atlantiqueauray-quiberon.fr
Support sustainable development of urban, rural, and coastal areas, economic growth, tourism, environment, housing, mobility, culture, and social services. |
150 |
| 52 |
SAINT-MALO AGGLOMÉRATION (Coopération intercommunale)stmalo-agglomeration.fr
Coordination of economic growth, tourism promotion, urban planning, social housing, transport, environmental protection, waste management, and sports facilities development. |
147 |
| 53 |
SPL EAU DU BASSIN RENNAISeaudubassinrennais.fr
Public local company managing water production and distribution for 470,000 residents across multiple municipalities in Rennes area with 140 employees. |
143 |
| 54 |
Hôpitaux Privés Rennais - Saint-Grégoire - Vivalto Santéchpsaintgregoire.com
A private hospital near Rennes offering a wide range of healthcare services with 500 beds, 800 employees, 270 physicians, and a large operating room facility |
143 |
| 55 | 137 | |
| 56 |
Centre Hospitalier de Douarnenezch-douarnenez.bzh
A public health facility in Douarnenez, part of a regional hospital network, collaborating with other hospitals to provide quality healthcare services |
128 |
| 57 |
Clinique Pasteur-Lanrozecliniquepasteurlanroze.vivalto-sante.com
A hospital & health care company located in Brest, France, providing medical services and care to patients in the Brittany region |
111 |
| 58 |
Keolis Armorkeolis-armor.com
A transportation company in Brittany, working with local authorities to operate public transit networks, passenger transport lines, and coach services |
110 |
| 59 |
Clinique des Augustinescliniquedesaugustines.fr
Private nonprofit healthcare clinic specializing in geriatrics, chronic wound care, rehabilitation, palliative care, imaging, and paramedical consultations. |
107 |
| 60 |
Hôpital Régional d'Instruction des Armées Clermont-Tonnerrehiaclermonttonnerre.sante.defense.gouv.fr
Offers comprehensive medical services to military and civilian patients, focusing on infectious diseases, emergency care, and specialized health services. |
106 |
| 61 |
Hôpitaux Privés Rennais - Cesson-Sévigné - Vivalto Santéhopitalprivesevigne.com
Multidisciplinary healthcare facility in Cesson-Sévigné, Brittany, providing private hospitalization services as part of the Vivalto Santé group, a major national medical provider. |
105 |
| 62 |
TRANSPORTS GROUSSARD SAgroussard-logistics.com
Family-owned transport and logistics group specializing in small lot consolidation, temperature-controlled transport, and warehousing across Western France and Paris region. |
104 |
| 63 |
GHT Armor
The Territorial Hospital Group (GHT) created in 2016 aims to provide common and graduated patient care for equal access to secure, quality healthcare |
93 |
| 64 |
Arkéa Banque Privéearkeabanqueprivee.fr
Arkéa Banque Privée is a regional bank within a national group, specializing in wealth management with over €35 billion in assets under management |
92 |
| 65 | 90 | |
| 66 |
Transports Oraintransports-orain.fr
Provide freight and passenger transport services with modern, diverse vehicle fleets meeting Euro 6 and safety standards for various travel needs. |
89 |
| 67 |
CLINIQUE DE L'ESPERANCEclinique-de-l-esperance.ramsaysante.fr
A healthcare facility established in 1948, part of Ramsay Santé group, located in downtown Rennes, offering medical services to patients |
84 |
| 68 |
Clinique Mutualiste de Bretagne Occidentaleclinique-quimper.fr
A healthcare facility in Western Brittany with 180 beds, 30+ specialties, imaging services, surgical facilities, and emphasis on personalized care and medical advancements |
83 |
| 69 |
Bibus Brestbibus.fr
Transportation company providing bus, tramway, cable cars, bike services, and on-demand transport in Brest metropolitan area, including services for people with reduced mobility |
81 |
| 70 |
Hôpital Privé des Côtes d'Armorhopitalprive22.fr
A private hospital in Côtes d’Armor specializing in surgery, maternity, and cancer care, offering a balance between healthcare services and community |
79 |
| 71 |
Assurance Maladie des Côtes d'Armorameli.fr
A collective dedicated to protecting the health of over 60 million insured individuals, ensuring universal access to healthcare, promoting health preservation, and enhancing system efficiency |
77 |
| 72 |
LINEVIAlinevia.fr
A family-owned Breton company specializing in passenger transportation, committed to its local community Visit wwwlineviafr and send CV to contact@lineviafr |
77 |
| 73 |
Triborde-tribord.com
An insertion company specializing in environmental sector and waste management, operating in various territories in Brittany, Loire-Atlantique, and Manche |
77 |
| 74 |
RGO Mobilités
RGO Mobilités is a group of independent passenger transport companies offering school, regular, urban, occasional, and tourist transportation services in Western France |
72 |
| 75 |
Aéroport Brest Bretagnebrest.aeroport.bzh
An airport company managing Brest Bretagne and Quimper Bretagne airports in Brittany, providing flights to various destinations in France and Europe |
71 |
| 76 |
OCELORN le réseau bus&carsocelorn.com
A network of independent transportation companies offering services for communities and businesses in tourism, regular lines, school transport, urban networks, and custom travel packages |
68 |
| 77 |
OTOKTONEotoktone-bpgo.fr
A banking entity that specializes in investment banking, wealth management, and asset management services, tailored to the needs and ambitions of its clients |
62 |
| 78 |
HAD DE LORIENT (DE L AVEN A ETEL)had-lorient.fr
Provides technical, frequent, and prolonged medical care at home as an alternative to hospital stays and rehabilitation centers. |
61 |
| 79 |
Technicentre Industriel de Rennes - SNCF Voyageurs Matériel
Industrial site in the heart of Rennes specializing in braking systems for railway and urban rolling stock, also offering maintenance services for train refurbishment |
59 |
| 80 |
COLLECTIVITE EAU DU BASSIN RENNAISeaudubassinrennais-collectivite.fr
An utilities company in Rennes, France, focused on water management in the region of Bassin Rennais |
57 |
| 81 |
CHP Brestelsan.care
A private healthcare facility with 474 beds, offering advanced surgical, oncology, obstetrics, and emergency medical services in the region |
56 |
| 82 |
BAIE D'ARMOR TRANSPORTStub.bzh
Operates and manages a public urban transport network, providing essential mobility services for communities within its designated operational area. |
53 |
| 83 |
HOPITAL PRIVE DES COTES D'ARMOR
A hospital & health care company located in France, specializing in providing medical services to patients in the Cotes d'Armor region |
51 |
| 84 |
Mégalis Bretagnemegalis.bretagne.bzh
Mégalis Bretagne is a mixed syndicate responsible for leading the Bretagne Très Haut Débit project and promoting the use of electronic communication networks |
48 |
| 85 |
SDEF - Syndicat départemental d'Energie et d'Equipement du Finistèresdef.fr
The company is a key player in the energy sector, managing public electricity distribution and promoting renewable energy in Finistère through various projects and services |
47 |
| 86 |
Groupe Pandoragroupe-pandora.com
Support for telecom and IT projects across northern France, offering technical expertise, personalized services, and strong team collaboration. |
42 |
| 87 |
CLINIQUE PEN AN DALARclinique-pen-an-dalar.ramsaysante.fr
A medical practice company based in Bretagne, France, focusing on providing healthcare services at 147 Rue de Paris, Guipavas |
39 |
| 88 |
AMB - Agence Maritime Brestoiseamb-mk.com
Handling, consignment, transit, port logistics, customs solutions, and transport services for maritime operations along the French Atlantic coast. |
37 |
| 89 |
Crédit Agricole en Bretagneca-bretagne-recrute.fr
Join the leading bancassurance employer in Brittany, part of a European banking group, offering real growth opportunities Recruiting permanent, apprentices, and interns |
32 |
| 90 |
GH Rance-Emeraudecht-ranceemeraude.fr
The Rance-Emeraude Group brings together hospitals in Saint-Malo, Dinan, and Cancale, specializing in healthcare services for the community |
32 |
| 91 |
Hôpital de proximité de Paimpolghtarmor.bzh
Located in Paimpol, the Public Health Facility provides short-stay medicine, rehabilitation, and long-term care services with advanced medical technology and emergency services |
31 |
| 92 |
Transdev Bretagnetransdev-bretagne.com
Transdev Bretagne creates customized mobility solutions for communities in Brittany, promoting safe, green, and connected transportation for residents |
31 |
| 93 | 30 | |
| 94 |
RESIDENCES MAREVAresidences-mareva.fr
A public autonomous organization operating four EHPAD facilities focused on personalized care and vibrant activities in Vannes and Meucon, Morbihan |
28 |
| 95 |
Manifonemanifone.com
A French voip Telecom operator founded in 2006, offering innovative BtoB and BtoC value added services |
27 |
| 96 |
Pôle médico-social Bais-Hamberspolepaph.fr
The medical-social center in Mayenne provides care for the elderly and people with disabilities through various services, including nursing homes and specialized living facilities |
26 |
| 97 |
Nass&Windnassetwind.com
Development, financing, and operation of over 200 renewable energy projects focused on local, decentralized energy production across France. |
24 |
| 98 |
Brittany Ferries Freightbrittanyferriesfreight.com
A company operating a flexible fleet of 12 ships linking 12 ports in UK, France, Spain, and Ireland, offering a wide range of freight transportation services |
23 |
| 99 |
Orange Lannionorange.com
The company in Lannion specializes in various expertise areas such as development, mobile banking, AI, cybersecurity, 5G, digitalization, and serving businesses It collaborates with a rich local ecosystem |
23 |
| 100 |
TED COURSEStedcourses.fr
Specialized transport and logistics company offering customized transport, regular day and night routes, and 24/7 storage solutions. |
20 |
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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.
More company lists in Brittany
- The largest companies in Brittany 2,535
- Retail chains in Brittany 321
- Manufacturers in Brittany 209
- Family-owned companies in Brittany 190
- Food and Beverage Manufacturing companies in Brittany 165
- Public sector organisations in Brittany 151
- Software Development companies in Brittany 123
- Distributors and wholesalers in Brittany 119
- SaaS companies in Brittany 119
- Consumer goods companies in Brittany 112
- Food and beverage companies in Brittany 110
- Retail companies in Brittany 96
- IT services companies in Brittany 96
- Contract manufacturers in Brittany 88
- Healthcare providers in Brittany 84
- IT Services and IT Consulting companies in Brittany 81
- Hardware manufacturers in Brittany 77
- Financial services firms in Brittany 73
- Accounting firms in Brittany 72
- Government Administration companies in Brittany 71
- Accounting companies in Brittany 69
- Consulting firms in Brittany 68
- Construction companies in Brittany 65
- Law Practice companies in Brittany 64
The same list elsewhere in France
- Critical infrastructure operators in France 2,492
- Critical infrastructure operators in Île-de-France 732
- Critical infrastructure operators in Auvergne-Rhône-Alpes 270
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- Critical infrastructure operators in Nouvelle-Aquitaine 192
- Critical infrastructure operators in Occitanie 192
- Critical infrastructure operators in Provence-Alpes-Côte d'Azur 189
- Critical infrastructure operators in Hauts-de-France 162
- Critical infrastructure operators in Pays de la Loire 114
- Critical infrastructure operators in Normandy 87
- Critical infrastructure operators in Centre-Val de Loire 78
- Critical infrastructure operators in Bourgogne-Franche-Comté 71
- Critical infrastructure operators in Paris 314
- Critical infrastructure operators in Marseille 43
- Critical infrastructure operators in Lyon 39
- Critical infrastructure operators in Toulouse 34
- Critical infrastructure operators in Bordeaux 31
- Critical infrastructure operators in Strasbourg 29
- Critical infrastructure operators in Lille 28
- Critical infrastructure operators in Montpellier 27