The companies in Rennes primarily operate in the food and beverage manufacturing sector, higher education, and wellness services. Noteworthy firms include Groupe Le Duff, a global leader in bakery and catering, and Brioche Dorée, a fast-food chain specializing in French-style bakery. Other significant entities are Université de Rennes I, a multidisciplinary university, and L'Orange bleue, a European fitness company.
A recurring pattern among these companies is their strong regional foundation in Rennes, with several also having an international presence. The list includes a mix of established large groups like Groupe Le Duff (founded 1976) and Brioche Dorée (founded 1976), alongside more recent ventures such as Sekoia (founded 2022) which builds cyber operations platforms.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
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 | |||
| 5 |
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 | |||
| 6 |
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 | |||
| 7 |
DIANAsymrise.com
A global supplier of fragrances, flavors, food, nutrition, and cosmetic ingredients, acquired by Symrise Group For updates, follow Symrise AG page |
517 | |||
| 8 |
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 | |||
| 9 |
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 | |||
| 10 |
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 | |||
| 11 |
Norac Foodsnoracfoods.com
Food industry group providing better natural food. Active in bakery and snacking sectors. Operates in Europe and Americas. |
215 | |||
| 12 |
Cailabscailabs.com
Designs, manufactures, and develops innovative photonic solutions for space, industry (laser machining), telecommunications, and defense sectors, specializing in laser shaping. |
192 | |||
| 13 |
Sekoiasekoia.com
Building a cyber operations platform for the AI era, unifying threat intelligence, detection, response, and exposure management, making advanced defense accessible. |
165 | |||
| 14 |
Lorflexlorflex.fr
specialist in smoke conduits, ventilation, and technical insulation distribution with 21 agencies across France and Luxembourg, focusing on expertise and customer service |
134 | |||
| 15 |
Le Fournil de Pierregroupeleduff.com
Established in 1980, this bakery franchise offers a range of special breads, pastries, salads, and sandwiches using traditional recipes and French expertise With over 25 years of experience, it is part of an international group, operating around twenty establishments worldwide |
89 | |||
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 | 60 | ||||
| 17 |
Novastepint.novastep.life
A global medical device company focusing on foot and ankle conditions, developing products and educational programs for surgeons under Enovis™ #CreatingBetterTogether |
60 | |||
| 18 |
Mitsubishi Electric R&D Centre Europe - Francemitsubishielectric-rce.eu
European R&D centre specializing in communication & power electronic systems, focusing on next-gen products, innovative solutions, and open innovation collaborations |
60 | |||
| 19 |
GROUPE VIDONvidon.com
A leading global IP law firm providing strategic protection and management of intangible assets through patents, trademarks, designs, and legal services |
57 | |||
| 20 |
AMA XpertEyeamaxperteye.com
Global provider of productivity applications for frontline workforce, using assisted Reality and AI for remote support, digitized work instructions, and inspections Promoting sustainability and innovation |
51 | |||
| 21 |
Digital Campus Rennesdigital-campus.fr
A network of web schools offering various training programs in 6 cities in France and Senegal, focusing on creativity and real-life projects |
48 | |||
| 22 |
Euro-Sheltertoutenkamion-group.com
Design and manufacture of lightweight, durable mobile shelters using aluminum sandwich panels for defense, space, and aerospace industries. |
48 | |||
| 23 |
GROUPE RENAULT Direction Régionale OUESTrenault.fr
A longstanding international automotive manufacturer with a multi-brand portfolio, selling 376M vehicles in 2017 across 127 countries Operations in Brittany support regional dealership success |
47 | |||
| 24 | 47 | ||||
| 25 |
BBrightbbright.com
A global leader in next-generation video delivery solutions, specializing in compression, transmission, and processing technologies for TV operators, content providers, and broadcasters |
41 | |||
| 26 |
STIRWELDstirweld.com
The company developed a technology for Friction Stir Welding on CNC machines, offering cost-effective and adaptable solutions for welding and machining |
32 | |||
| 27 |
Culinaria Groupculinaria.group
French bakery and pastry distributor operating in Latin America with offices in Chile, Panama, Peru, Colombia, Mexico, and Venezuela Specializes in #pasteleriafrancesa |
29 | |||
| 28 | 28 | ||||
| 29 |
Pysaeweb.pysae.com
Innovative solution providing real-time passenger information in public transport using lightweight system with smartphones installed on buses |
25 | |||
| 30 |
OKNOPLAST Franceoknoplast.fr
A leading manufacturer of premium PVC and aluminum windows and doors in Europe, known for quality, innovation, and refined design With 3,500 partners across 19 countries |
24 | |||
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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 12, 2026.
More company lists in Rennes
- The largest companies in Rennes 600
- Retail chains in Rennes 50
- SaaS companies in Rennes 49
- Public sector organisations in Rennes 47
- Professional services firms in Rennes 44
- Companies with in-house R&D in Rennes 43
- Software Development companies in Rennes 40
- Law Practice companies in Rennes 39
- Education providers in Rennes 38
- Subscription businesses in Rennes 27
- Legal Services companies in Rennes 26
- Real Estate companies in Rennes 26
- IT services companies in Rennes 26
- Consulting firms in Rennes 25
- Recruitment and staffing agencies in Rennes 25
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 788
- 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 449
- 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