# Multinational companies headquartered in the Ille-et-Vilaine department

Tamtam tracks 118 multinational companies headquartered in the Ille-et-Vilaine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Groupe SAMSIC, Groupe Le Duff and Vivalto Santé. Their median headcount is 534. Half of them were founded in 1984 or later. The most common headquarters are Rennes (10), Saint-Malo (5) and Cesson-Sévigné (3).

This selection of large companies in Ille-et-Vilaine reveals a concentration of firms in business services and food and beverage manufacturing. Noteworthy examples include Groupe SAMSIC, providing facility management and HR services, and Groupe Le Duff, a global leader in bakery and catering. Vivalto Santé operates a network of healthcare facilities, while Université de Rennes I focuses on research and education. C-Log offers supply chain solutions, and Groupe Beaumanoir specializes in women's ready-to-wear.

The data shows a strong presence of companies founded in the late 20th century, with many established between the 1970s and 1990s. Several of these large employers, such as Groupe Le Duff and Brioche Dorée, both founded in 1976, are headquartered in Rennes, indicating a cluster of established businesses in the regional capital.

🇫🇷 Ille-et-Vilaine · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Groupe SAMSIC](https://www.tamtam.ai/c/groupe-samsic) (samsic.com)<br>With over 30 years of experience, we prioritize human and professional values while offering tailored solutions in facility management and HR services | Business Consulting and Services | 🇫🇷 Cesson-Sévigné | 6,680 | 1986 |
| 2 | [Groupe Le Duff](https://www.tamtam.ai/c/groupe-le-duff) (groupeleduff.com)<br>World leader in bakery, pastry, and catering, operating restaurant chains, manufacturing premium products for hotels, prioritizing high-quality, healthy dishes globally. | Food and Beverage Manufacturing | 🇫🇷 Rennes | 5,761 | 1976 |
| 3 | [Vivalto Santé](https://www.tamtam.ai/c/vivalto-sante) (vivalto-sante.fr)<br>Operates a network of healthcare facilities across Europe, providing comprehensive patient care. Engages in medical partnerships and sustainable practices. | Hospitals and Health Care | 🇫🇷 Saint-Grégoire | 4,612 | 2009 |
| 4 | [Université de Rennes I](https://www.tamtam.ai/c/universite-de-rennes-i) (univ-rennes.fr)<br>Multidisciplinary university focusing on dynamic research, lifelong learning, societal challenges, and regional socio-economic and cultural development through partnerships. | Research Services | 🇫🇷 Rennes | 4,002 | 2022 |
| 5 | [C-Log - L'Expertise Supply Chain](https://www.tamtam.ai/c/c-log-l-expertise-supply-chain) (clog.fr)<br>Provides tailored supply chain solutions for fashion brands, including retail, e-commerce, international transport, customs, and continuous improvement consulting services. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Saint-Malo | 2,276 | 2002 |
| 6 | [Groupe Beaumanoir](https://www.tamtam.ai/c/groupe-beaumanoir) (groupe-beaumanoir.com)<br>A leading pioneer in women's ready-to-wear products, operating four successful brands worldwide with a strong focus on sales and logistics services | Textile Manufacturing | 🇫🇷 Saint-Malo | 1,870 | 1981 |
| 7 | [Solina](https://www.tamtam.ai/c/solina) (solina.com)<br>Designing customized food solutions with enhanced taste, nutrition, and functionality for food industry, service, butchery, and nutrition sectors worldwide. | Food and Beverage Manufacturing | 🇫🇷 Bréal-sous-Montfort | 1,537 |  |
| 8 | [Brioche Dorée](https://www.tamtam.ai/c/brioche-doree) (briochedoree.fr)<br>A fast-food chain specializing in French-style bakery products and sandwiches, operating globally with a focus on fresh, locally sourced ingredients and a modern concept. | Food and Beverage Manufacturing | 🇫🇷 Rennes | 1,477 | 1976 |
| 9 | [EHESP - École des hautes études en santé publique](https://www.tamtam.ai/c/ehesp-ecole-des-hautes-etudes-en-sante-publique) (ehesp.fr)<br>A public institution offering a wide range of training programs in public health, with a strong focus on research and international partnerships | Higher Education | 🇫🇷 Rennes | 1,474 |  |
| 10 | [L'Orange bleue](https://www.tamtam.ai/c/l-orange-bleue) (lorangebleue-group.com)<br>Leading European fitness company operating over 400 clubs offering cardio, strength training, wellness programs, personalized coaching, and innovative group classes. | Wellness and Fitness Services | 🇫🇷 Rennes | 1,083 | 1996 |
| 11 | [SOCIETE DES TRANSPORTS GAUTIER](https://www.tamtam.ai/c/societe-des-transports-gautier) (stg-logistique.fr)<br>Transports food products, offering comprehensive, personalized services, focusing on proximity, reactivity, and food safety, with just-in-time deliveries across Europe. | Truck Transportation | 🇫🇷 Noyal-sur-Vilaine | 1,039 | 1949 |
| 12 | [Rennes School of Business](https://www.tamtam.ai/c/rennes-school-of-business) (rennes-sb.com)<br>International business school focusing on educating responsible entrepreneurs through English programs, international partnerships, research, innovation, executive training, and hands-on experience | Higher Education | 🇫🇷 Rennes | 937 |  |
| 13 | [Kersia, inventing a food safe world](https://www.tamtam.ai/c/kersia-inventing-a-food-safe-world) (kersia-group.com)<br>Global biosecurity and food safety, preventing disease and contamination in animals and humans across the food supply chain, including healthcare. | Chemical Manufacturing | 🇫🇷 Dinard | 797 |  |
| 14 | [Olga](https://www.tamtam.ai/c/olga) (olga.fr)<br>Family-owned food company specializing in organic dairy and plant-based products, promoting ecological and societal food transition since 1951. | Food and Beverage Manufacturing | 🇫🇷 Noyal-sur-Vilaine | 700 | 1951 |
| 15 | [PANPHARMA](https://www.tamtam.ai/c/panpharma) (panpharma.eu)<br>Develops, produces, and commercializes generic injectable medicines for hospitals and clinics in France and over 75 countries, specializing in antibiotics, anesthetics, and analgesics. | Pharmaceutical Manufacturing | 🇫🇷 Luitré-Dompierre | 534 | 1983 |
| 16 | [DIANA](https://www.tamtam.ai/c/diana) (symrise.com)<br>A global supplier of fragrances, flavors, food, nutrition, and cosmetic ingredients, acquired by Symrise Group For updates, follow Symrise AG page | Food and Beverage Manufacturing | 🇫🇷 Rennes | 517 |  |
| 17 | [EMO](https://www.tamtam.ai/c/emo) (emo-france.com)<br>Global provider of customized water and sludge treatment solutions for wastewater, drinking water, and industrial effluents with a dedicated in-house laboratory and worldwide distribution network | Industrial Machinery Manufacturing | 🇫🇷 Noyal-sur-Vilaine | 463 |  |
| 18 | [M-extend](https://www.tamtam.ai/c/m-extend) (m-extend.com)<br>Family-run group since 1951, specializing in agricultural handling solutions Integrated design to production process, emphasis on innovation, sustainability, and international growth | Farming | 🇫🇷 Acigné | 415 | 1951 |
| 19 | [Cache Cache](https://www.tamtam.ai/c/cache-cache) (cache-cache.fr)<br>French ready-to-wear brand offering trendy, colorful, and affordable fashion for joyful and optimistic women, part of a leading retail group. | Retail | 🇫🇷 Saint-Malo | 408 | 1985 |
| 20 | [CCPA GROUP](https://www.tamtam.ai/c/ccpa-group) (ccpa.com)<br>Develops, manufactures, and distributes animal nutrition and health products including premixes and feed additives, offering zootechnical support to feed manufacturers globally. | Farming | 🇫🇷 Janzé | 367 | 1966 |
| 21 | [Guillemot Corporation](https://www.tamtam.ai/c/guillemot-corporation) (guillemot.com)<br>Design and manufacture interactive entertainment hardware and accessories under Hercules and Thrustmaster brands, distributing products worldwide with focus on growth markets. | Computer Hardware Manufacturing | 🇫🇷 Rennes | 349 | 1984 |
| 22 | [Traiteur de Paris](https://www.tamtam.ai/c/traiteur-de-paris) (traiteurdeparis.com)<br>Production of high-quality French delicacies, desserts, and culinary aids using traditional methods and freezing for global export. | Food and Beverage Manufacturing | 🇫🇷 Cesson-Sévigné | 336 | 1993 |
| 23 | [TIMAC AGRO International](https://www.tamtam.ai/c/timac-agro-international) (timacagro.com)<br>Provides precise, innovative, complete nutritional solutions for soils, plants, and animals, supporting farmers globally for over 65 years. | Farming | 🇫🇷 Saint-Malo | 314 | 1959 |
| 24 | [Bonobo](https://www.tamtam.ai/c/bonobo) (bonoboplanet.com)<br>Offering authentic and affordable jeans for an optimistic and engaged generation, promoting values of respect and harmony through a new denim spirit | Textile Manufacturing | 🇫🇷 Saint-Malo | 313 | 2006 |
| 25 | [DELIVER](https://www.tamtam.ai/c/deliver) (deliver.events)<br>Facilitating pre-qualified meetings between retail and brand decision makers with logistics vendors, along with thought leadership content on sustainability and supply chain challenges globally | Events Services | 🇫🇷 Rennes | 280 | 2015 |
| 26 | [Broadpeak](https://www.tamtam.ai/c/broadpeak) (broadpeak.tv)<br>Broadpeak specializes in designing and manufacturing video delivery components for IPTV, Cable, and OTT services, enhancing quality of experience for subscribers worldwide | Software Development | 🇫🇷 Cesson-Sévigné | 269 | 2010 |
| 27 | [Regional Interim - R Interim Groupe Triangle Solutions RH](https://www.tamtam.ai/c/regional-interim-r-interim-groupe-triangle-solutions-rh) (triangle.fr)<br>Family-run recruitment agency providing personalized interim staffing solutions, rapid client response, and extensive support for temporary workers and companies. | Human Resources Services | 🇫🇷 Rennes | 268 | 1996 |
| 28 | [PHOSPHEA](https://www.tamtam.ai/c/phosphea) (phosphea.com)<br>Specializing in phosphorus and calcium solutions for animal nutrition, this company is a global player with a production capacity exceeding 1 Mt | Chemical Manufacturing | 🇫🇷 Dinard | 268 | 1976 |
| 29 | [OET](https://www.tamtam.ai/c/oet-betton) (groupe-ovalt.com)<br>Independent service company specializing in MES, automation, robotics, electrical systems, and weighing with turnkey solutions and maintenance across multiple sites. | Automation Machinery Manufacturing | 🇫🇷 Betton | 266 | 1975 |
| 30 | [Groupe Guisnel](https://www.tamtam.ai/c/groupe-guisnel) (guisnel.com)<br>A family-owned company based in Brittany specializing in furniture transport, logistics, industrial vehicle rental, maintenance, and distribution of furniture across Europe | Truck Transportation | 🇫🇷 Dol-de-Bretagne | 264 | 1957 |

## 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 Ille-et-Vilaine department

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- [Food and Beverage Manufacturing companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-ille-et-vilaine) (46)
- [Retail companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/retail-companies-ille-et-vilaine) (46)
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- [Higher Education companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/higher-education-companies-ille-et-vilaine) (41)
- [Legal Services companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/legal-services-companies-ille-et-vilaine) (41)

## The same list elsewhere in France

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Source: https://www.tamtam.ai/l/multinational-companies-ille-et-vilaine