# List of multinational companies in Rennes

Tamtam tracks 33 multinational companies headquartered in Rennes. This list ranks the 30 largest by number of employees on LinkedIn, led by Groupe Le Duff, Université de Rennes I and Brioche Dorée. Their median headcount is 89. Half of them were founded in 2012 or later.

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.

🇫🇷 Rennes · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [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 |
| 2 | [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 |
| 3 | [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 |
| 4 | [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 |  |
| 5 | [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 |
| 6 | [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 |  |
| 7 | [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 |  |
| 8 | [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 |
| 9 | [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 |
| 10 | [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 |
| 11 | [Norac Foods](https://www.tamtam.ai/c/norac-foods) (noracfoods.com)<br>Food industry group providing better natural food. Active in bakery and snacking sectors. Operates in Europe and Americas. | Food and Beverage Manufacturing | 🇫🇷 Rennes | 215 | 1989 |
| 12 | [Cailabs](https://www.tamtam.ai/c/cailabs) (cailabs.com)<br>Designs, manufactures, and develops innovative photonic solutions for space, industry (laser machining), telecommunications, and defense sectors, specializing in laser shaping. | Telecommunications | 🇫🇷 Rennes | 192 | 2013 |
| 13 | [Sekoia](https://www.tamtam.ai/c/sekoia) (sekoia.com)<br>Building a cyber operations platform for the AI era, unifying threat intelligence, detection, response, and exposure management, making advanced defense accessible. | Computer and Network Security | 🇫🇷 Rennes | 165 | 2022 |
| 14 | [Lorflex](https://www.tamtam.ai/c/lorflex) (lorflex.fr)<br>specialist in smoke conduits, ventilation, and technical insulation distribution with 21 agencies across France and Luxembourg, focusing on expertise and customer service | Wholesale Building Materials | 🇫🇷 Rennes | 134 |  |
| 15 | [Le Fournil de Pierre](https://www.tamtam.ai/c/le-fournil-de-pierre) (groupeleduff.com)<br>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 | Restaurants | 🇫🇷 Rennes | 89 | 1980 |
| 16 | [Astellia](https://www.tamtam.ai/c/astellia) (exfo.com)<br>Astellia offers network and subscriber intelligence solutions for mobile operators to optimize service quality, drive revenues, and reduce churn through real-time monitoring and troubleshooting | Telecommunications | 🇫🇷 Rennes | 60 | 2000 |
| 17 | [Novastep](https://www.tamtam.ai/c/novastep) (int.novastep.life)<br>A global medical device company focusing on foot and ankle conditions, developing products and educational programs for surgeons under Enovis™ #CreatingBetterTogether | Medical Equipment Manufacturing | 🇫🇷 Rennes | 60 | 2014 |
| 18 | [Mitsubishi Electric R&D Centre Europe - France](https://www.tamtam.ai/c/mitsubishi-electric-r-and-d-centre-europe-france) (mitsubishielectric-rce.eu)<br>European R&D centre specializing in communication & power electronic systems, focusing on next-gen products, innovative solutions, and open innovation collaborations | Research Services | 🇫🇷 Rennes | 60 | 1995 |
| 19 | [GROUPE VIDON](https://www.tamtam.ai/c/groupe-vidon) (vidon.com)<br>A leading global IP law firm providing strategic protection and management of intangible assets through patents, trademarks, designs, and legal services | Legal Services | 🇫🇷 Rennes | 57 | 1988 |
| 20 | [AMA XpertEye](https://www.tamtam.ai/c/ama-xperteye) (amaxperteye.com)<br>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 | Software Development | 🇫🇷 Rennes | 51 | 2014 |
| 21 | [Digital Campus Rennes](https://www.tamtam.ai/c/digital-campus-rennes) (digital-campus.fr)<br>A network of web schools offering various training programs in 6 cities in France and Senegal, focusing on creativity and real-life projects | Higher Education | 🇫🇷 Rennes | 48 |  |
| 22 | [Euro-Shelter](https://www.tamtam.ai/c/euro-shelter) (toutenkamion-group.com)<br>Design and manufacture of lightweight, durable mobile shelters using aluminum sandwich panels for defense, space, and aerospace industries. | Defense and Space Manufacturing | 🇫🇷 Rennes | 48 | 1920 |
| 23 | [GROUPE RENAULT Direction Régionale OUEST](https://www.tamtam.ai/c/groupe-renault-direction-regionale-ouest) (renault.fr)<br>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 | Motor Vehicle Manufacturing | 🇫🇷 Rennes | 47 |  |
| 24 | [Fruggr](https://www.tamtam.ai/c/fruggr) (fruggr.io)<br>cloud-based software providing automated analysis and improvement of ecological and social footprints of corporate digital platforms for sustainable performance | Software Development | 🇫🇷 Rennes | 47 | 2020 |
| 25 | [BBright](https://www.tamtam.ai/c/bbright) (bbright.com)<br>A global leader in next-generation video delivery solutions, specializing in compression, transmission, and processing technologies for TV operators, content providers, and broadcasters | Media and Telecommunications | 🇫🇷 Rennes | 41 | 2013 |
| 26 | [STIRWELD](https://www.tamtam.ai/c/stirweld) (stirweld.com)<br>The company developed a technology for Friction Stir Welding on CNC machines, offering cost-effective and adaptable solutions for welding and machining | Industrial Machinery Manufacturing | 🇫🇷 Rennes | 32 | 2017 |
| 27 | [Culinaria Group](https://www.tamtam.ai/c/culinaria-group) (culinaria.group)<br>French bakery and pastry distributor operating in Latin America with offices in Chile, Panama, Peru, Colombia, Mexico, and Venezuela Specializes in #pasteleriafrancesa | Food and Beverage Services | 🇫🇷 Rennes | 29 | 2012 |
| 28 | [Klarys](https://www.tamtam.ai/c/klarys) (klarys.io)<br>Connects fresh food industry, retailers, and wholesalers for efficient, transparent, and sustainable buying and selling. Automates transactions, reduces stock-outs, improves data reliability. | Software Development | 🇫🇷 Rennes | 28 | 2016 |
| 29 | [Pysae](https://www.tamtam.ai/c/pysae) (web.pysae.com)<br>Innovative solution providing real-time passenger information in public transport using lightweight system with smartphones installed on buses | Software Development | 🇫🇷 Rennes | 25 | 2014 |
| 30 | [OKNOPLAST France](https://www.tamtam.ai/c/oknoplast-france) (oknoplast.fr)<br>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 | Wholesale Import and Export | 🇫🇷 Rennes | 24 | 2012 |

## 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.

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## The same list elsewhere in France

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## The same list elsewhere

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Source: https://www.tamtam.ai/l/multinational-companies-rennes