# The 100 largest companies in the Morbihan department

Tamtam tracks 538 companies headquartered in the Morbihan department. This list ranks the 100 largest by number of employees on LinkedIn, led by BIDAN, Ansamble and Crédit Agricole du Morbihan. Their median headcount is 147. Half of them were founded in 1986 or later. The most common headquarters are Vannes (25) and Lorient (18).

The largest companies in Morbihan are predominantly established firms, with a strong presence in food and beverage manufacturing and services, as well as public administration and healthcare. Many of these companies have been operating for several decades. For example, Mix Buffet is a pioneer in prepared salads, Cite marine specializes in fresh and frozen seafood, and Ansamble provides environmentally conscious food services. Crédit Agricole du Morbihan is a regional bank, and Département du Morbihan manages public services.

A notable pattern is the concentration of headquarters in Vannes, which hosts Ansamble, Crédit Agricole du Morbihan, Département du Morbihan, ROUXEL, and Service Départemental d'Incendie et de Secours du Morbihan. The food sector is well-represented, with companies like Mix Buffet, Cite marine, OCEALLIANCE, and Capitaine Houat focusing on various aspects of food production and distribution, particularly seafood.

🇫🇷 Morbihan · 100 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [BIDAN](https://www.tamtam.ai/c/bidan)<br>A retail company located in France that specializes in various products or services offered at their physical store on Rue Montauban | Retail | 🇫🇷 La Gacilly | 2,697 |  |
| 2 | [Ansamble](https://www.tamtam.ai/c/ansamble) (ansamble.fr)<br>Ansamble is a culinary company committed to providing innovative, balanced, and environmentally conscious food for all age groups, promoting sustainable development | Food and Beverage Services | 🇫🇷 Vannes | 1,153 | 1978 |
| 3 | [Crédit Agricole du Morbihan](https://www.tamtam.ai/c/credit-agricole-du-morbihan) (ca-morbihan.fr)<br>Recruitment and sourcing of motivated candidates for a regional, multichannel bank focused on proximity, responsibility, and solidarity values. | Banking | 🇫🇷 Vannes | 933 |  |
| 4 | [Mix Buffet](https://www.tamtam.ai/c/mix-buffet) (mixbuffet.com)<br>Pioneer in prepared salads, handling raw material sourcing, processing, assembly, packaging, storage, and shipping. Also active in snacking with Mix brand. | Food and Beverage Manufacturing | 🇫🇷 Guer | 717 | 1998 |
| 5 | [Cite marine](https://www.tamtam.ai/c/cite-marine) (cite-marine.fr)<br>Leading French company specializing in fresh and frozen seafood, prepared vegetables, and vegetarian dishes with sustainable, ethical production and quality management. | Food and Beverage Manufacturing | 🇫🇷 Kervignac | 530 | 1990 |
| 6 | [Département du Morbihan](https://www.tamtam.ai/c/departement-du-morbihan) (morbihan.fr)<br>Manages public services across a dynamic region, encompassing urban, rural, and coastal areas, supporting residents in daily life, family, education, and environment. | Government Administration | 🇫🇷 Vannes | 520 |  |
| 7 | [OCEALLIANCE](https://www.tamtam.ai/c/ocealliance) (ocealliance.fr)<br>Leading seafood supplier with extensive product range, serving retailers, wholesalers, restaurants, fishmongers across Europe and export markets. | Seafood Product Manufacturing | 🇫🇷 Lorient | 501 |  |
| 8 | [GROUPE HOSPITALIER BRETAGNE SUD](https://www.tamtam.ai/c/groupe-hospitalier-bretagne-sud) (ghbs.bzh)<br>Public healthcare institution in South Brittany offering extensive medical care, training, research, and partnerships across multiple sites. | Hospitals and Health Care | 🇫🇷 Lorient | 478 |  |
| 9 | [AUCUNE IDEE](https://www.tamtam.ai/c/aucune-idee)<br>A real estate company located in Bretagne, France specializing in property development, management, and sales in the Port Louis area | Real Estate | 🇫🇷 Port-Louis | 449 |  |
| 10 | [ROUXEL](https://www.tamtam.ai/c/rouxel) (rouxel.fr)<br>A family-owned transport company, established in 1945, offering a range of services such as bulk and general cargo transport, logistics, and vehicle rental | Truck Transportation | 🇫🇷 Vannes | 421 |  |
| 11 | [Service Départemental d'Incendie et de Secours du Morbihan (SDIS56)](https://www.tamtam.ai/c/service-departemental-d-incendie-et-de-secours-du-morbihan-sdis56) (sdis56.fr)<br>The Departmental Fire and Rescue Service operates 65 fire stations in three districts, managing over 45,000 emergency interventions annually | Public Safety | 🇫🇷 Vannes | 401 |  |
| 12 | [Olmix](https://www.tamtam.ai/c/olmix) (olmix.com)<br>The company develops natural solutions using algae, clay, and trace elements to improve agricultural practices, benefiting farmers, animals, and the environment | Biotechnology Research | 🇫🇷 Bréhan | 386 | 1995 |
| 13 | [Capitaine Houat - AGROMOUSQUETAIRES](https://www.tamtam.ai/c/capitaine-houat-agromousquetaires) (capitainehouat.fr)<br>industrial fish filleting and seafood production including shrimp and salmon, operating two sites in France with focus on quality and local sourcing | Food and Beverage Manufacturing | 🇫🇷 Lanester | 382 | 1988 |
| 14 | [EPSM Morbihan](https://www.tamtam.ai/c/epsm-morbihan) (epsm-morbihan.fr)<br>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. | Hospitals and Health Care | 🇫🇷 Saint-Avé | 360 | 1886 |
| 15 | [Cap l'Orient agglomération](https://www.tamtam.ai/c/cap-l-orient-agglomeration) (lorient-agglo.bzh)<br>Group of 19 communes collaborating to create a dynamic, ambitious, and sustainable territory focused on community and quality of life. | Government Administration | 🇫🇷 Lorient | 334 |  |
| 16 | [Ville de Lorient](https://www.tamtam.ai/c/ville-de-lorient) (lorient.bzh)<br>Specializing in six ports, movement, and ocean-related activities, located in Lorient, France | Government Administration | 🇫🇷 Lorient | 283 | 1666 |
| 17 | [PROLIANS CMB](https://www.tamtam.ai/c/prolians-cmb) (prolians.fr)<br>PROLIANS supports construction professionals with a wide range of industrial supplies and services, aiming to defend and promote their expertise | Wholesale | 🇫🇷 Quéven | 277 | 1782 |
| 18 | [Académie militaire de Saint-Cyr Coëtquidan](https://www.tamtam.ai/c/academie-militaire-de-saint-cyr-coetquidan) (terre.defense.gouv.fr)<br>Initial training for army officers, preparing them for operational roles and a full career, emphasizing leadership, resilience, and adaptability to complex challenges. | Higher Education | 🇫🇷 Guer | 264 |  |
| 19 | [Groupe JEAN FLOC'H](https://www.tamtam.ai/c/groupe-jean-floc-h) (groupe.jean-floch.com)<br>A leading agri-food group specializing in pork meat processing, offering a wide range of products nationally and internationally through various brands | Food and Beverage Manufacturing | 🇫🇷 Locmine | 251 | 1977 |
| 20 | [ETIB](https://www.tamtam.ai/c/etib) (etib.fr)<br>Specializing in software for healthcare professionals, ETIB collaborates with CPAM - CNDA, offering approved SESAM-VITALE, SCOR, and telemedicine solutions Located in Morbihan, Bretagne Sud | Software Development | 🇫🇷 Lanester | 247 | 1994 |
| 21 | [AMISEP](https://www.tamtam.ai/c/amisep) (amisep.fr)<br>Working together for social and professional integration | Non-profit Organizations | 🇫🇷 Pontivy | 228 | 1998 |
| 22 | [Conserverie la belle-iloise](https://www.tamtam.ai/c/conserverie-la-belle-iloise) (labelleiloise.fr)<br>Family-owned artisanal fish preserves from Quiberon, combining premium ingredients and traditional recipes for ready-to-eat gourmet meals. | Food and Beverage Manufacturing | 🇫🇷 Quiberon | 222 | 1932 |
| 23 | [BCF Life Sciences](https://www.tamtam.ai/c/bcf-life-sciences) (bcf-lifesciences.com)<br>Extraction and marketing of natural amino acids and derivatives for pharmaceutical, health care, animal, and plant nutrition industries. | Manufacturing | 🇫🇷 Pleucadeuc | 220 | 1986 |
| 24 | [morbihan habitat](https://www.tamtam.ai/c/morbihan-habitat) (morbihan-habitat.fr)<br>Construction, renovation, and management of affordable social housing, specialized residences, and community facilities supporting local territorial development. | Housing and Community Development | 🇫🇷 Vannes | 218 | 2023 |
| 25 | [Golfe du Morbihan - Vannes agglomération](https://www.tamtam.ai/c/golfe-du-morbihan-vannes-agglomeration) (golfedumorbihan-vannesagglomeration.bzh)<br>Coordination and management of public services and development across 34 municipalities formed by merging three local communities. | Government Administration | 🇫🇷 Vannes | 207 | 2017 |
| 26 | [Brocéliande Atlantique](https://www.tamtam.ai/c/broceliande-atlantique) (ch-bretagne-atlantique.fr)<br>A healthcare group serving 400,000 residents with 6,000 health professionals, 400 doctors, 3,700 beds, and 93,000 ER visits annually | Hospitals and Health Care | 🇫🇷 Vannes | 205 |  |
| 27 | [Assurance Maladie du Morbihan (Cpam)](https://www.tamtam.ai/c/assurance-maladie-du-morbihan-cpam) (ameli.fr)<br>Working at this company means joining a team committed to protecting the health of over 60 million insured individuals through various projects | Government Administration | 🇫🇷 Vannes | 202 | 1945 |
| 28 | [MGDIS](https://www.tamtam.ai/c/mgdis) (mgdis.fr)<br>MGDIS provides tools for organizations to make informed decisions quickly by utilizing public data, strategic monitoring, financial forecasting, and operational management | Software Development | 🇫🇷 Vannes | 200 | 1983 |
| 29 | [Centre Mutualiste de Kerpape](https://www.tamtam.ai/c/centre-mutualiste-de-kerpape) (centre-kerpape.fr)<br>A healthcare facility in Ploemeur specializing in functional rehabilitation, physical and rehabilitation medicine for adults and children with various medical conditions | Wellness and Fitness Services | 🇫🇷 Ploemeur | 200 |  |
| 30 | [Goûters Magiques](https://www.tamtam.ai/c/gouters-magiques) (gouters-magiques.com)<br>Production and distribution of food products based in Bretagne, specializing in creating and supplying various edible goods to customers. | Food and Beverage Manufacturing | 🇫🇷 Plumelin | 199 | 2008 |
| 31 | [SOCIÉTÉ BRETONNE DE VOLAILLE](https://www.tamtam.ai/c/societe-bretonne-de-volaille) (societebretonnedevolaille.fr)<br>French poultry production company emphasizing local origin, expertise, and serving both local and national markets with quality products. | Food and Beverage Manufacturing | 🇫🇷 Saint Jean Brévelay | 184 | 2015 |
| 32 | [Icônes - imprimerie](https://www.tamtam.ai/c/icones-imprimerie) (icones.fr)<br>Printing company offering original, high-quality prints with laser cutting, creative design, and flexible digital and offset services in France. | Printing Services | 🇫🇷 Caudan | 182 | 1985 |
| 33 | [Groupe Hospitalier Centre Bretagne](https://www.tamtam.ai/c/groupe-hospitalier-centre-bretagne) (ch-centre-bretagne.fr)<br>Public healthcare institution offering modern medical, surgical, rehabilitation, and accommodation services across multiple sites for 142,000 residents. | Hospitals and Health Care | 🇫🇷 Noyal-Pontivy | 181 |  |
| 34 | [Salaisons Celtiques - AGROMOUSQUETAIRES](https://www.tamtam.ai/c/salaisons-celtiques-agromousquetaires) (recrutement.agromousquetaires.com)<br>Agromousquetaires is the industrial branch of Les Mousquetaires, producing private label food products in France, specializing in pork-based products since 1920 | Food and Beverage Manufacturing | 🇫🇷 Le Sourn | 179 | 1920 |
| 35 | [VYV 3 Bretagne](https://www.tamtam.ai/c/vyv-3-bretagne) (bretagne.vyv3.fr)<br>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 | Health and Human Services | 🇫🇷 Lorient | 176 | 1905 |
| 36 | [Hôpital Privé Océane](https://www.tamtam.ai/c/hopital-prive-oceane) (elsan.care)<br>A medical and surgical facility with advanced technology, specializing in outpatient care and offering home hospitalization services, including a hand emergency service | Wellness and Fitness Services | 🇫🇷 Vannes | 173 |  |
| 37 | [FenêtréA](https://www.tamtam.ai/c/fenetrea) (fenetrea.fr)<br>Design and manufacture of innovative custom windows, doors, and shutters enhancing thermal, acoustic performance, security, and aesthetics for demanding artisans. | Wholesale Building Materials | 🇫🇷 Beignon | 170 | 1993 |
| 38 | [ROUENEL AUBADE](https://www.tamtam.ai/c/rouenel-aubade) (espace-aubade.fr)<br>Specialist in bathroom, tiling, heating, air conditioning, renewable energies, electricity, and tools in 19 locations Committed to quality products and supporting professionals | Wholesale | 🇫🇷 Pontivy | 168 | 1905 |
| 39 | [METI](https://www.tamtam.ai/c/meti) (cgi.com)<br>Specializing in business process management solutions for retail, this software development company provides services and support to major clients worldwide | IT Services and IT Consulting | 🇫🇷 Larmor-Plage | 166 | 1982 |
| 40 | [WINPHARMA EVERYS](https://www.tamtam.ai/c/winpharma-everys) (winpharma.com)<br>Development and sale of pharmacy software and hardware, providing installation, training, and support services to pharmacists. | Software Development | 🇫🇷 Arzon | 163 | 1994 |
| 41 | [Cuisinier Privé](https://www.tamtam.ai/c/cuisinier-prive) (cuisinier-prive.fr)<br>Cuisinier Privé offers event catering, cocktails, gourmet meal platters, cooking classes for all ages, and customizable services from a team of passionate chefs | Restaurants | 🇫🇷 Lorient | 161 | 2019 |
| 42 | [IUT de Vannes](https://www.tamtam.ai/c/iut-de-vannes) (iutvannes.fr)<br>The company provides training in Commerce, Management, IT, and Data Science for quick integration into the job market through various programs | Higher Education | 🇫🇷 Vannes | 159 | 1970 |
| 43 | [HERAKLES](https://www.tamtam.ai/c/herakles) (herakles.com)<br>Independent software developer and integrator providing ERP and GPAO solutions for small and medium industrial companies across diverse manufacturing and construction sectors. | Software Development | 🇫🇷 Vannes | 159 | 1990 |
| 44 | [isatech](https://www.tamtam.ai/c/isatech) (isatech.fr)<br>International IT solutions provider specializing in ERP & CRM solutions, Microsoft Dynamics 365 expertise, BI, Azure, and professional services for various industry sectors worldwide | IT Services and IT Consulting | 🇫🇷 Vannes | 158 | 1983 |
| 45 | [SECURITEAM](https://www.tamtam.ai/c/securiteam) (securiteam.fr)<br>The company specializes in private security services, employee safety training, and event planning services in Brittany and Rhône-Alpes regions | Security and Investigations | 🇫🇷 Lorient | 155 | 2003 |
| 46 | [Auray Quiberon Terre Atlantique](https://www.tamtam.ai/c/auray-quiberon-terre-atlantique) (auray-quiberon.fr)<br>Support sustainable development of urban, rural, and coastal areas, economic growth, tourism, environment, housing, mobility, culture, and social services. | Government Administration | 🇫🇷 Auray | 150 | 2014 |
| 47 | [ROUXEL TP](https://www.tamtam.ai/c/rouxel-tp) (rouxel.fr)<br>Transport company based in Vannes with agencies throughout the Grand Ouest and around Paris, specializing in transportation services | Truck Transportation | 🇫🇷 Vannes | 150 | 1945 |
| 48 | [SERVICE DES SPORTS](https://www.tamtam.ai/c/service-des-sports)<br>A sports company in Bretagne, France offering various sports services and products to enthusiasts in the region | Spectator Sports | 🇫🇷 Lorient | 149 |  |
| 49 | [Inconnu](https://www.tamtam.ai/c/inconnu-caudan) (hortibreiz.com)<br>Family-owned company in Brittany since 1978, specializing in products for agriculture, horticulture, landscaping, and environmental conservation Committed to sustainability and biodiversity | Farming | 🇫🇷 Caudan | 148 |  |
| 50 | [La Trinitaine](https://www.tamtam.ai/c/la-trinitaine) (latrinitaine.com)<br>Family-owned bakery specializing in traditional Breton pastries and biscuits, preserving regional culinary heritage for over 60 years. | Food and Beverage Manufacturing | 🇫🇷 Saint-Philibert | 147 | 1955 |
| 51 | [VENETIS](https://www.tamtam.ai/c/venetis) (venetis.fr)<br>Multi-sector employer group in France providing shared permanent employment solutions to over 244 companies across various industries. | Human Resources Services | 🇫🇷 Vannes | 146 | 1997 |
| 52 | [ASERTI Electronic](https://www.tamtam.ai/c/aserti-electronic) (aserti.fr)<br>Specialized maintenance, repair, and reliability services for industrial electronic equipment and drive systems with nationwide service centers. | Repair and Maintenance | 🇫🇷 Vannes | 142 | 1992 |
| 53 | [GRETA-CFA Bretagne Sud](https://www.tamtam.ai/c/greta-cfa-bretagne-sud) (bit.ly)<br>A public network in Brittany offering ongoing education for adults by pooling resources from over 260 schools, providing adult education and apprenticeship programs | Professional Training and Coaching | 🇫🇷 Lorient | 137 | 1974 |
| 54 | [OMNI-PAC GROUP](https://www.tamtam.ai/c/omni-pac-group) (omnipacgroup.com)<br>A European group with 600 employees in France, Germany, and England, focusing on recycling paper to produce eco-friendly packaging and hygiene solutions | Manufacturing | 🇫🇷 Allaire | 137 | 2012 |
| 55 | [OJC Conseil](https://www.tamtam.ai/c/ojc-conseil) (ojc-consulting.com)<br>This consulting firm offers IT services for purchase, sales, and treasury management Specializing in IT transformation projects with expertise in IVALUA solutions | Software Development | 🇫🇷 Vannes | 135 | 2007 |
| 56 | [FONDERIE DE BRETAGNE](https://www.tamtam.ai/c/fonderie-de-bretagne) (fonderiedebretagne.com)<br>Production of raw and pre-machined iron castings for automotive, transport, agriculture, rail, and hydraulic sectors with advanced industrial resources. | Manufacturing | 🇫🇷 Caudan | 135 | 1965 |
| 57 | [Lanester](https://www.tamtam.ai/c/lanester) (lanester.bzh)<br>Providing advice and support for families and individuals with autism during COVID-19 Contact for assistance Monday to Friday 9am-12pm | Wellness and Fitness Services | 🇫🇷 Lanester | 131 |  |
| 58 | [ENSIBS](https://www.tamtam.ai/c/ensibs) (www-ensibs.univ-ubs.fr)<br>Offers engineering degrees in various specialties, including cybersecurity and energy, with hands-on training on two campuses near the sea. | Higher Education | 🇫🇷 Lorient | 126 | 2007 |
| 59 | [Les Gars des Eaux](https://www.tamtam.ai/c/les-gars-des-eaux) (lesgarsdeseaux.com)<br>A national expert in non-destructive leak detection and network detection, offering services for water leaks and infrastructure diagnostics | Environmental Services | 🇫🇷 Nivillac | 125 | 1993 |
| 60 | [IUT de Lorient - Pontivy](https://www.tamtam.ai/c/iut-de-lorient-pontivy) (www-iutlorient.univ-ubs.fr)<br>This company focuses on the skills of graduates, students, and staff at the IUT, while also highlighting innovations, ongoing recruitments, and company news | Higher Education | 🇫🇷 Lorient | 123 | 1975 |
| 61 | [LES VOLAILLES DE KERANNA](https://www.tamtam.ai/c/les-volailles-de-keranna) (ldc.fr)<br>Specializes in slaughtering, cutting, and packaging poultry products, operating as a subsidiary of the LDC group in Guiscriff. | Food and Beverage Manufacturing | 🇫🇷 Guiscriff | 118 | 1981 |
| 62 | [Celluloses de Brocéliande - AGROMOUSQUETAIRES](https://www.tamtam.ai/c/celluloses-de-broceliande-agromousquetaires) (celluloses-broceliande.fr)<br>manufacturing baby and feminine hygiene products under various brands, operating within a large French industrial and logistics group | Manufacturing | 🇫🇷 Ploërmel | 116 | 1990 |
| 63 | [CCI du Morbihan](https://www.tamtam.ai/c/cci-du-morbihan) (bretagne.cci.fr)<br>Provides expert advice and support to entrepreneurs in commerce, industry, and services for creating, starting, improving, buying, and selling businesses. | Government Administration | 🇫🇷 Lorient | 110 |  |
| 64 | [GSF CELTUS OUEST](https://www.tamtam.ai/c/gsf-celtus-ouest) (gsf.fr)<br>GSF is a leading French provider of tailored cleaning and service solutions, with a focus on human capital as its greatest asset | Facilities Services | 🇫🇷 Lanester | 110 |  |
| 65 | [JPA Josselin - AGROMOUSQUETAIRES](https://www.tamtam.ai/c/jpa-josselin-agromousquetaires) (agromousquetaires.com)<br>Industrial hub, food production, industrial innovation, local employment, pork slaughtering, and primary and secondary pork meat processing, Made in France | Food and Beverage Manufacturing | 🇫🇷 Josselin | 109 |  |
| 66 | [Fidouest](https://www.tamtam.ai/c/fidouest) (fidouest.com)<br>An established regional accounting firm specializing in serving a variety of businesses, providing clear and accessible financial analysis, advice, and support Partner of the Marque Bretagne | Accounting | 🇫🇷 Auray | 108 | 1976 |
| 67 | [Clinique des Augustines](https://www.tamtam.ai/c/clinique-des-augustines) (cliniquedesaugustines.fr)<br>Private nonprofit healthcare clinic specializing in geriatrics, chronic wound care, rehabilitation, palliative care, imaging, and paramedical consultations. | Hospitals and Health Care | 🇫🇷 Malestroit | 107 | 1929 |
| 68 | [FRANCOISE SAGET](https://www.tamtam.ai/c/francoise-saget) (francoisesaget.com)<br>Designs and creates unique, colorful home linen collections, including bedding, bath, table linen, lingerie, and homewear, with French savoir-faire. | Retail | 🇫🇷 Les Fougerêts | 105 | 1982 |
| 69 | [IRDL - UMR CNRS 6027/UBS/ENSTA/INP UBO/UBO](https://www.tamtam.ai/c/irdl-umr-cnrs-6027-ubs-ensta-inp-ubo-ubo) (irdl.fr)<br>Leading marine mechanical systems research institute in France and Europe, specializing in material mechanics and structures, supporting maritime economy in Brittany | Think Tanks | 🇫🇷 Lorient | 104 | 2016 |
| 70 | [ROUXEL BETON](https://www.tamtam.ai/c/rouxel-beton) (rouxel.fr)<br>Transportation company specializing in trucking and railroad services based in Vannes, Brittany, France, serving industrial transportation needs. | Truck Transportation | 🇫🇷 Vannes | 104 |  |
| 71 | [Les Délices de St-Léonard - LDC](https://www.tamtam.ai/c/les-delices-de-st-leonard-ldc) (ldc.fr)<br>A leading industrial pole producing private label food products in France, specializing in frozen pizzas, crepes, quiches, sandwiches, and snacks | Food and Beverage Manufacturing | 🇫🇷 Theix-Noyalo | 103 | 1993 |
| 72 | [EVENO FERMETURES](https://www.tamtam.ai/c/eveno-fermetures) (eveno-fermetures.com)<br>manufacturer of roller shutters, adjustable sunshades, and garage doors for new construction and renovation with innovative, customer-focused solutions | Construction | 🇫🇷 Ploemeur | 103 |  |
| 73 | [SIPROPRE - Propreté et Services Associés](https://www.tamtam.ai/c/sipropre-proprete-et-services-associes) (sipropre.fr)<br>SIPROPRE offers cleaning and maintenance solutions for various sectors, providing regular and on-demand services with ISO 9001 standards across multiple locations | Facilities Services | 🇫🇷 Ploërmel | 102 | 1986 |
| 74 | [Sigmaphi Accelerator Technologies](https://www.tamtam.ai/c/sigmaphi-accelerator-technologies) (sigmaphi.com)<br>Design construction measurement installation of particle accelerator equipment including permanent, resistive, superconducting magnets and specialized coils for various sizes and conditions. | Research Services | 🇫🇷 Vannes | 102 | 1981 |
| 75 | [Ploërmel Communauté](https://www.tamtam.ai/c/ploermel-communaute) (ploermelcommunaute.bzh)<br>A dynamic Breton community of 30 communes offering natural beauty, cultural heritage, diverse economy, employment opportunities, and vibrant local events. | Government Administration | 🇫🇷 Ploërmel | 102 | 2017 |
| 76 | [Pros-Consulte](https://www.tamtam.ai/c/pros-consulte) (pros-consulte.com)<br>Supports organizations in preventing psychosocial risks, enhancing mental health, and fostering well-being at work, improving collective performance and employee engagement. | Human Resources Services | 🇫🇷 Lorient | 101 | 2009 |
| 77 | [AGORA Services](https://www.tamtam.ai/c/agora-services) (agoraservices.bzh)<br>Agora Services is a Breton company in the social and solidarity economy sector, focusing on housing, catering, and training for social inclusion | Civic and Social Organizations | 🇫🇷 Lorient | 99 | 1956 |
| 78 | [OC Sport](https://www.tamtam.ai/c/oc-sport) (ocsport.com)<br>International group specializing in professional sailing and outdoor sports event organization, rights management, team management, and brand consulting. | Spectator Sports | 🇫🇷 Lorient | 99 | 1998 |
| 79 | [Groupe Morbihan Auto](https://www.tamtam.ai/c/groupe-morbihan-auto) (morbihan-auto.com)<br>Group operating eight dealerships across the region, representing twelve automotive brands and employing around 220 dedicated professionals. | Motor Vehicle Manufacturing | 🇫🇷 Vannes | 98 | 1965 |
| 80 | [Thibault Bergeron](https://www.tamtam.ai/c/thibault-bergeron) (thibault-bergeron.com)<br>Design and manufacture of bespoke luxury cardboard packaging for artisans and professionals in gourmet food, cosmetics, and spirits sectors. | Packaging and Containers Manufacturing | 🇫🇷 Muzillac | 98 | 1890 |
| 81 | [Compagnie des Ports du Morbihan](https://www.tamtam.ai/c/compagnie-des-ports-du-morbihan) (compagniedesportsdumorbihan.com)<br>A company managing department-owned marinas and heritage sites to meet the needs of the Morbihan region, established by the Department of Morbihan in 2012 | Recreational Facilities | 🇫🇷 Vannes | 97 |  |
| 82 | [Boulangerie Pâtisserie Gaël](https://www.tamtam.ai/c/boulangerie-patisserie-gael) (patisseriegael.com)<br>For over a decade, this enterprise has been dedicated to providing quality baked goods, pastries, and chocolates with artisanal expertise across five locations | Retail | 🇫🇷 Muzillac | 96 | 2008 |
| 83 | [Clinique du Ter](https://www.tamtam.ai/c/clinique-du-ter) (cliniqueduter.bzh)<br>A surgical clinic with 122 beds and specialized medical teams providing accessible, compassionate care for a quick return home | Hospitals and Health Care | 🇫🇷 Ploemeur | 94 | 1957 |
| 84 | [Chambre de Métiers et de l'Artisanat du Morbihan](https://www.tamtam.ai/c/chambre-de-metiers-et-de-l-artisanat-du-morbihan) (cma56.bzh)<br>The company provides support and guidance to artisans, offering training, assistance with business creation, and representation in front of public authorities | Government Relations Services | 🇫🇷 Vannes | 93 | 1942 |
| 85 | [Multiplast - Groupe Carboman](https://www.tamtam.ai/c/multiplast-groupe-carboman) (multiplast.eu)<br>Designs, builds high-tech composite multi-hulls and mono-hulls for competition, aerospace, defense, industry, and construction sectors, with unparalleled track record. | Shipbuilding | 🇫🇷 Vannes | 91 | 1981 |
| 86 | [Miramar La Cigale Hôtel Thalasso & Spa 5*](https://www.tamtam.ai/c/miramar-la-cigale-hotel-thalasso-and-spa-5) (miramar-lacigale.com)<br>Luxury five-star hotel offering spacious rooms, gourmet dining, innovative thalasso spa, fitness facilities, panoramic pool, and elegant event spaces. | Hospitality | 🇫🇷 Arzon | 89 | 1990 |
| 87 | [STACEM](https://www.tamtam.ai/c/stacem) (stacem.com)<br>STACEM designs and manufactures O-rings and elastomer parts for aerospace, nuclear, chemical, and agri-food industries | Aviation and Aerospace Component Manufacturing | 🇫🇷 Grand-Champ | 89 | 1983 |
| 88 | [Kerlys - AGROMOUSQUETAIRES](https://www.tamtam.ai/c/kerlys-agromousquetaires) (recrutement.agromousquetaires.com)<br>Agromousquetaires is the industrial branch of a leading manufacturer of private label brands in France, specializing in vegetable canning Offering 100% Made in France products | Food and Beverage Manufacturing | 🇫🇷 Locoal-Mendon | 87 | 1890 |
| 89 | [SRB Construction](https://www.tamtam.ai/c/srb-construction) (srbconstruction.bzh)<br>Specializing in building construction, SRB Construction in Hennebont, Brittany has expanded its skills to become a key player in structural work in the region | Construction | 🇫🇷 Hennebont | 82 | 2009 |
| 90 | [CDK Technologies](https://www.tamtam.ai/c/cdk-technologies) (cdk-technologies.com)<br>Leading carbon composite construction company. Specializes in racing yachts, luxury yacht platforms, marine renewable energy components, and large carbon masts. | Shipbuilding | 🇫🇷 Lorient | 81 | 1984 |
| 91 | [Nutréa NNA](https://www.tamtam.ai/c/nutrea-nna) (nutrea-nna.fr)<br>Production of high-quality animal feed for ruminants, pigs, poultry, horses, and game, supporting farmers' economic and zootechnical needs. | Animal Feed Manufacturing | 🇫🇷 Languidic | 81 | 2010 |
| 92 | [SCAR](https://www.tamtam.ai/c/scar) (scar-racing.com)<br>A leading brand specializing in titanium, aluminum, and carbon products for motocross and off-road motorcycles, with over thirty years of competition product development experience | Motor Vehicle Manufacturing | 🇫🇷 Vannes | 79 | 1988 |
| 93 | [Silvadec](https://www.tamtam.ai/c/silvadec) (fr.silvadec.com)<br>Manufacture of recyclable wood composite products using unique formulation, certified for environmental standards, with eco-responsible policies and sustainable practices. | Wood Product Manufacturing | 🇫🇷 Arzal | 78 | 2001 |
| 94 | [LINEVIA](https://www.tamtam.ai/c/linevia) (linevia.fr)<br>A family-owned Breton company specializing in passenger transportation, committed to its local community Visit wwwlineviafr and send CV to contact@lineviafr | Truck Transportation | 🇫🇷 Guer | 77 | 1934 |
| 95 | [Groupe Eonnet](https://www.tamtam.ai/c/groupe-eonnet) (groupe-eonnet.fr)<br>Specializes in vehicle rental with drivers, focusing on ready-mix concrete transport and messaging services across France with many subsidiaries. | Truck Transportation | 🇫🇷 Moréac | 75 | 1996 |
| 96 | [COMPAGNIE OCEANE](https://www.tamtam.ai/c/compagnie-oceane) (compagnie-oceane.fr)<br>Maritime company operating from Lorient, Brittany, France, specializing in maritime services and activities at Gare Maritime port. | Maritime Transportation | 🇫🇷 Lorient | 75 |  |
| 97 | [SKIOLD](https://www.tamtam.ai/c/skiold) (skiold.com)<br>International supplier of equipment for pig, poultry, feed, grain, and seed processing, offering turn-key solutions with installation and after-sales service | Industrial Machinery Manufacturing | 🇫🇷 Saint-Thuriau | 74 | 1948 |
| 98 | [TLB - Solutions de sécurité connectée](https://www.tamtam.ai/c/tlb-solutions-de-securite-connectee) (careers.werecruit.io)<br>Specializes in connected security for property and people, offering anti-intrusion, video protection, access control, and teleassistance services to various client types. | Security Systems Services | 🇫🇷 Arradon | 74 |  |
| 99 | [CHRONO SLPA PNEUS](https://www.tamtam.ai/c/chrono-slpa-pneus) (chronoslpapneus.fr)<br>Support garage clients with tire-related services through regional platforms, dedicated sales team, and responsive customer service for business growth. | Wholesale | 🇫🇷 Moréac | 73 | 2005 |
| 100 | [apik by OCI](https://www.tamtam.ai/c/apik-by-oci) (apik.cloud)<br>Specialist in Odoo consulting and integration with multidisciplinary expertise across various industries, supporting digital transformation throughout multiple French regions. | IT Services and IT Consulting | 🇫🇷 Baden | 72 | 2011 |

## 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 11, 2026.

## More company lists in the Morbihan department

- [Companies with in-house R&D in the Morbihan department](https://www.tamtam.ai/l/r-and-d-companies-morbihan) (73)
- [Retail chains in the Morbihan department](https://www.tamtam.ai/l/retail-chains-morbihan) (63)
- [Manufacturers in the Morbihan department](https://www.tamtam.ai/l/manufacturers-morbihan) (62)
- [Food and Beverage Manufacturing companies in the Morbihan department](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-morbihan) (43)
- [Multinational companies in the Morbihan department](https://www.tamtam.ai/l/multinational-companies-morbihan) (35)
- [Consumer goods companies in the Morbihan department](https://www.tamtam.ai/l/consumer-goods-companies-morbihan) (32)
- [Public sector organisations in the Morbihan department](https://www.tamtam.ai/l/public-sector-organisations-morbihan) (29)
- [Critical infrastructure operators in the Morbihan department](https://www.tamtam.ai/l/critical-infrastructure-operators-morbihan) (28)
- [Professional services firms in the Morbihan department](https://www.tamtam.ai/l/professional-services-firms-morbihan) (28)
- [Hardware manufacturers in the Morbihan department](https://www.tamtam.ai/l/hardware-companies-morbihan) (27)
- [Family-owned companies in the Morbihan department](https://www.tamtam.ai/l/family-owned-companies-morbihan) (27)
- [Distributors and wholesalers in the Morbihan department](https://www.tamtam.ai/l/distributors-and-wholesalers-morbihan) (26)

## The same list elsewhere in France

- [The largest companies in France](https://www.tamtam.ai/l/largest-companies-france) (90,813)
- [The largest companies in Île-de-France](https://www.tamtam.ai/l/largest-companies-ile-de-france) (36,143)
- [The largest companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/largest-companies-auvergne-rhone-alpes) (11,033)
- [The largest companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/largest-companies-provence-alpes-cote-dazur) (6,699)
- [The largest companies in Occitanie](https://www.tamtam.ai/l/largest-companies-occitanie) (5,769)
- [The largest companies in Grand Est](https://www.tamtam.ai/l/largest-companies-grand-est) (5,700)
- [The largest companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/largest-companies-nouvelle-aquitaine) (5,460)
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [The largest companies in the Rhône department](https://www.tamtam.ai/l/largest-companies-rhone) (4,813)
- [The largest companies in Hauts-de-France](https://www.tamtam.ai/l/largest-companies-hauts-de-france) (4,505)
- [The largest companies in Pays de la Loire](https://www.tamtam.ai/l/largest-companies-pays-de-la-loire) (4,269)
- [The largest companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/largest-companies-bouches-du-rhone) (3,318)
- [The largest companies in Brittany](https://www.tamtam.ai/l/largest-companies-brittany) (3,058)
- [The largest companies in the Nord department](https://www.tamtam.ai/l/largest-companies-nord) (2,806)
- [The largest companies in the Gironde department](https://www.tamtam.ai/l/largest-companies-gironde) (2,435)
- [The largest companies in the Haute-Garonne department](https://www.tamtam.ai/l/largest-companies-haute-garonne) (2,406)
- [The largest companies in Normandy](https://www.tamtam.ai/l/largest-companies-normandy) (2,380)
- [The largest companies in the Loire-Atlantique department](https://www.tamtam.ai/l/largest-companies-loire-atlantique) (2,046)
- [The largest companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/largest-companies-bourgogne-franche-comte) (1,867)
- [The largest companies in Centre-Val de Loire](https://www.tamtam.ai/l/largest-companies-centre-val-de-loire) (1,701)
- [The largest companies in the Alpes-Maritimes department](https://www.tamtam.ai/l/largest-companies-alpes-maritimes) (1,538)
- [The largest companies in Paris](https://www.tamtam.ai/l/largest-companies-paris) (22,790)
- [The largest companies in Lyon](https://www.tamtam.ai/l/largest-companies-lyon) (2,679)
- [The largest companies in Toulouse](https://www.tamtam.ai/l/largest-companies-toulouse) (1,565)

---

Source: https://www.tamtam.ai/l/largest-companies-morbihan