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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Groupe SAMSICsamsic.com
With over 30 years of experience, we prioritize human and professional values while offering tailored solutions in facility management and HR services |
6,680 | |||
| 2 |
Groupe Le Duffgroupeleduff.com
World leader in bakery, pastry, and catering, operating restaurant chains, manufacturing premium products for hotels, prioritizing high-quality, healthy dishes globally. |
5,761 | |||
| 3 |
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 | |||
| 4 |
Université de Rennes Iuniv-rennes.fr
Multidisciplinary university focusing on dynamic research, lifelong learning, societal challenges, and regional socio-economic and cultural development through partnerships. |
4,002 | |||
| 5 |
C-Log - L'Expertise Supply Chainclog.fr
Provides tailored supply chain solutions for fashion brands, including retail, e-commerce, international transport, customs, and continuous improvement consulting services. |
2,276 | |||
| 6 |
Groupe Beaumanoirgroupe-beaumanoir.com
A leading pioneer in women's ready-to-wear products, operating four successful brands worldwide with a strong focus on sales and logistics services |
1,870 | |||
| 7 |
Solinasolina.com
Designing customized food solutions with enhanced taste, nutrition, and functionality for food industry, service, butchery, and nutrition sectors worldwide. |
1,537 | |||
| 8 |
Brioche Doréebriochedoree.fr
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. |
1,477 | |||
| 9 |
EHESP - École des hautes études en santé publiqueehesp.fr
A public institution offering a wide range of training programs in public health, with a strong focus on research and international partnerships |
1,474 | |||
| 10 |
L'Orange bleuelorangebleue-group.com
Leading European fitness company operating over 400 clubs offering cardio, strength training, wellness programs, personalized coaching, and innovative group classes. |
1,083 | |||
| 11 |
SOCIETE DES TRANSPORTS GAUTIERstg-logistique.fr
Transports food products, offering comprehensive, personalized services, focusing on proximity, reactivity, and food safety, with just-in-time deliveries across Europe. |
1,039 | |||
| 12 |
Rennes School of Businessrennes-sb.com
International business school focusing on educating responsible entrepreneurs through English programs, international partnerships, research, innovation, executive training, and hands-on experience |
937 | |||
| 13 |
Kersia, inventing a food safe worldkersia-group.com
Global biosecurity and food safety, preventing disease and contamination in animals and humans across the food supply chain, including healthcare. |
797 | |||
| 14 | 700 | ||||
| 15 |
PANPHARMApanpharma.eu
Develops, produces, and commercializes generic injectable medicines for hospitals and clinics in France and over 75 countries, specializing in antibiotics, anesthetics, and analgesics. |
534 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
DIANAsymrise.com
A global supplier of fragrances, flavors, food, nutrition, and cosmetic ingredients, acquired by Symrise Group For updates, follow Symrise AG page |
517 | |||
| 17 |
EMOemo-france.com
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 |
463 | |||
| 18 |
M-extendm-extend.com
Family-run group since 1951, specializing in agricultural handling solutions Integrated design to production process, emphasis on innovation, sustainability, and international growth |
415 | |||
| 19 |
Cache Cachecache-cache.fr
French ready-to-wear brand offering trendy, colorful, and affordable fashion for joyful and optimistic women, part of a leading retail group. |
408 | |||
| 20 |
CCPA GROUPccpa.com
Develops, manufactures, and distributes animal nutrition and health products including premixes and feed additives, offering zootechnical support to feed manufacturers globally. |
367 | |||
| 21 |
Guillemot Corporationguillemot.com
Design and manufacture interactive entertainment hardware and accessories under Hercules and Thrustmaster brands, distributing products worldwide with focus on growth markets. |
349 | |||
| 22 |
Traiteur de Paristraiteurdeparis.com
Production of high-quality French delicacies, desserts, and culinary aids using traditional methods and freezing for global export. |
336 | |||
| 23 |
TIMAC AGRO Internationaltimacagro.com
Provides precise, innovative, complete nutritional solutions for soils, plants, and animals, supporting farmers globally for over 65 years. |
314 | |||
| 24 |
Bonobobonoboplanet.com
Offering authentic and affordable jeans for an optimistic and engaged generation, promoting values of respect and harmony through a new denim spirit |
313 | |||
| 25 |
DELIVERdeliver.events
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 |
280 | |||
| 26 |
Broadpeakbroadpeak.tv
Broadpeak specializes in designing and manufacturing video delivery components for IPTV, Cable, and OTT services, enhancing quality of experience for subscribers worldwide |
269 | |||
| 27 |
Regional Interim - R Interim Groupe Triangle Solutions RHtriangle.fr
Family-run recruitment agency providing personalized interim staffing solutions, rapid client response, and extensive support for temporary workers and companies. |
268 | |||
| 28 |
PHOSPHEAphosphea.com
Specializing in phosphorus and calcium solutions for animal nutrition, this company is a global player with a production capacity exceeding 1 Mt |
268 | |||
| 29 |
OETgroupe-ovalt.com
Independent service company specializing in MES, automation, robotics, electrical systems, and weighing with turnkey solutions and maintenance across multiple sites. |
266 | |||
| 30 |
Groupe Guisnelguisnel.com
A family-owned company based in Brittany specializing in furniture transport, logistics, industrial vehicle rental, maintenance, and distribution of furniture across Europe |
264 | |||
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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
- The largest companies in the Ille-et-Vilaine department 1,454
- Companies with in-house R&D in the Ille-et-Vilaine department 152
- Retail chains in the Ille-et-Vilaine department 135
- Manufacturers in the Ille-et-Vilaine department 100
- Professional services firms in the Ille-et-Vilaine department 94
- SaaS companies in the Ille-et-Vilaine department 85
- Family-owned companies in the Ille-et-Vilaine department 81
- Software Development companies in the Ille-et-Vilaine department 80
- Public sector organisations in the Ille-et-Vilaine department 75
- IT Services and IT Consulting companies in the Ille-et-Vilaine department 67
- IT services companies in the Ille-et-Vilaine department 65
- Hardware manufacturers in the Ille-et-Vilaine department 61
- Education providers in the Ille-et-Vilaine department 60
- Distributors and wholesalers in the Ille-et-Vilaine department 58
- Consulting firms in the Ille-et-Vilaine department 54
- Food and Beverage Manufacturing companies in the Ille-et-Vilaine department 46
- Retail companies in the Ille-et-Vilaine department 46
- Critical infrastructure operators in the Ille-et-Vilaine department 45
- Financial services firms in the Ille-et-Vilaine department 45
- Subscription businesses in the Ille-et-Vilaine department 45
- Construction companies in the Ille-et-Vilaine department 43
- Law Practice companies in the Ille-et-Vilaine department 43
- Higher Education companies in the Ille-et-Vilaine department 41
- Legal Services companies in the Ille-et-Vilaine department 41
The same list elsewhere in France
- Multinational companies in France 11,864
- Multinational companies in Île-de-France 6,028
- Multinational companies in Auvergne-Rhône-Alpes 1,318
- Multinational companies in the Hauts-de-Seine department 1,231
- Multinational companies in Grand Est 787
- Multinational companies in Provence-Alpes-Côte d'Azur 638
- Multinational companies in the Rhône department 577
- Multinational companies in Occitanie 532
- Multinational companies in Hauts-de-France 511
- Multinational companies in Nouvelle-Aquitaine 450
- Multinational companies in Pays de la Loire 390
- Multinational companies in the Bouches-du-Rhône department 351
- Multinational companies in the Nord department 332
- Multinational companies in Brittany 264
- Multinational companies in the Haute-Garonne department 246
- Multinational companies in the Yvelines department 226
- Multinational companies in Bourgogne-Franche-Comté 220
- Multinational companies in Normandy 216
- Multinational companies in the Gironde department 200
- Multinational companies in the Val-de-Marne department 200
- Multinational companies in the Seine-Saint-Denis department 198
- Multinational companies in Paris 3,531
- Multinational companies in Lyon 283
- Multinational companies in Boulogne-Billancourt 188