The Research Services companies in Brittany are a mix of universities, public research institutes, and private R&D centers. They include large organizations like Université de Rennes I, a multidisciplinary university, and IRISA, a research laboratory specializing in computer science. Other notable entities are IETR, focusing on electronics and digital technologies, and IUT Brest Morlaix, a higher education institute. There is also Station Biologique de Roscoff, a marine biology and oceanography research center, and Sigmaphi Accelerator Technologies, which designs particle accelerator equipment.
A significant pattern in the data is the strong concentration of these research services in Rennes, which hosts a substantial number of the listed organizations, including the largest by employee count. Beyond Rennes, other key locations include Brest, Roscoff, and Vannes, indicating a regional spread of research activities across diverse scientific and technological fields.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 | |||
| 2 |
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoiresirisa.fr
Research laboratory specializing in computer science, information technologies, cybersecurity, AI, big data, virtual reality, and software architectures. |
180 | |||
| 3 |
IETR - Institut d'Electronique et des Technologies du numéRique - UMR CNRS 6164ietr.fr
A public research laboratory specializing in electronics and digital technologies, focusing on scientific challenges related to digital transformation of society and environmental transitions |
155 | |||
| 4 |
IUT Brest Morlaixiut-brest.fr
A higher education institute in France offering Bachelor's and Professional Licenses in various fields, with a focus on industry, civil engineering, biology, commerce, and management They also have an Alternance and Continuing Education Center |
146 | |||
| 5 |
Station Biologique de Roscoffsb-roscoff.fr
A French marine biology and oceanography research and teaching center founded in 1872, affiliated with Sorbonne University and the National Centre for Scientific Research |
124 | |||
| 6 |
Sigmaphi Accelerator Technologiessigmaphi.com
Design construction measurement installation of particle accelerator equipment including permanent, resistive, superconducting magnets and specialized coils for various sizes and conditions. |
102 | |||
| 7 |
ISCR-Institut des Sciences Chimiques de Rennesiscr.univ-rennes.fr
The company conducts research in various fields including health, chemistry, sustainable processes, environment, energy, optics, photonics, electronics, and molecular materials |
68 | |||
| 8 |
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 | |||
| 9 |
Vegenovvegenov.com
An applied research center offering R&D services in the plant sector, supporting plant breeding, crop protection, nutrition, and product quality assessment. |
34 | |||
| 10 |
Institut MAUPERTUISinstitutmaupertuis.fr
The company is a technological resource center specializing in welding, cutting, mechatronics, and robotics for industrial innovation and product development in various sectors |
33 | |||
| 11 |
OpenHealth Companyopenhealth.fr
Healthcare data analysis for marketing, clinical research, public health, epidemiology, and medico-economic issues with expert multidisciplinary team. |
27 | |||
| 12 |
Pixel sur Merpixelsurmer.com
Specializing in mechatronic systems integration, fiber optic instrumentation, navigation, routing, and hardware/software development with a focus on electronics and marine computing |
27 | |||
| 13 |
GSea Designgseadesign.com
Structural engineering specialists focusing on calculations and design for high-performance composite parts used in offshore racing yachts and diverse industrial marine projects. |
25 | |||
| 14 |
Photonics Bretagne - Photonics Innovation Hubphotonics-bretagne.com
Support innovation and industrial growth in photonics through a cluster and RTO specializing in specialty optical fibers and components. |
23 | |||
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. | |||||
| 15 |
ethis ingénierieethis-ingenierie.fr
Specialized engineering firm providing fluid management, alternative energy solutions, audits, and performance consulting for aquatic centers, sports facilities, and cultural building construction projects. |
22 | |||
| 16 |
BA Technicsbatechgroup.com
Specialized in developing innovative products, primarily in small and medium series, for industrial clients across various sectors including automotive and medical. |
19 | |||
| 17 |
Réseau SATTsatt.fr
An association uniting 13 technology transfer accelerators in France to facilitate the transfer of academic research innovations to companies through shared actions and resources |
17 | |||
| 18 |
SLB Pharmaslbpharma.com
A Contract Research Organization specializing in clinical investigation of health technology products, offering a range of services from study design to market support |
16 | |||
| 19 |
ComposiTICcompositic.fr
This company specializes in developing innovative composites through automated material handling and fiber placement technology, focusing on eco-friendly industrial applications |
15 | |||
| 20 |
Arlumenevosens.fr
Specializing in customized photonics systems, we offer engineering services for design and optimization, as well as manufacturing custom solutions with advanced technical equipment |
11 | |||
| 21 |
POOLKERpoolker.fr
Specializing in automatic water treatment and smart devices for swimming pools, this engineering company provides innovative solutions for pool maintenance |
8 | |||
| 22 | 6 | ||||
| 23 |
Sushi - SecUrity at the Software/Hardware Interfaceteam.inria.fr
Assessing and increasing security for computing platforms at the software/hardware interface to address privacy and trust issues in complex systems. |
6 | |||
| 24 |
MATandSIMmatandsim.fr
MATandSIM is a research company located in Ploemeur, France, focusing on advanced scientific studies and simulations |
6 | |||
| 25 |
Biosit / R&D Bio Santébiosit.univ-rennes.fr
A company with over 10 biotechnology and health facilities providing integrated solutions for research projects, including testing, imaging, analysis, and biomolecule engineering |
6 | |||
| 26 |
Cluster SequoIAuniv-rennes.fr
European research and training ecosystem focusing on AI, cybersecurity, environmental sciences, and oceanography, promoting innovation, education, and secure AI applications. |
5 | |||
| 27 |
BAÑULSDESIGNbanulsdesign.com
Specializing in Naval Architecture & Maritime Engineering, the company develops innovative solutions for sustainable and efficient systems in the nautical and maritime industry |
4 | |||
| 28 |
Reflex Acoustiquereflexacoustique.com
Reflex Acoustique is a study firm specializing in noise analysis and management, offering tailored acoustic solutions from project conception to completion |
3 | |||
| 29 | 3 | ||||
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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 Brittany
- The largest companies in Brittany 3,058
- Companies with in-house R&D in Brittany 366
- Retail chains in Brittany 344
- Manufacturers in Brittany 307
- Multinational companies in Brittany 264
- Family-owned companies in Brittany 201
- Food and Beverage Manufacturing companies in Brittany 182
- Professional services firms in Brittany 167
- Public sector organisations in Brittany 165
- Hardware manufacturers in Brittany 148
- Distributors and wholesalers in Brittany 145
- Software Development companies in Brittany 132
- Food and beverage companies in Brittany 130
- SaaS companies in Brittany 128
- Critical infrastructure operators in Brittany 120
- Consumer goods companies in Brittany 115
- IT services companies in Brittany 113
- Education providers in Brittany 112
- Agriculture companies in Brittany 108
- Retail companies in Brittany 107
- IT Services and IT Consulting companies in Brittany 101
- Consulting firms in Brittany 99
- Healthcare providers in Brittany 97
- Contract manufacturers in Brittany 93
The same list elsewhere in France
- Research Services companies in France 745
- Research Services companies in Île-de-France 268
- Research Services companies in Auvergne-Rhône-Alpes 95
- Research Services companies in Provence-Alpes-Côte d'Azur 78
- Research Services companies in Occitanie 63
- Research Services companies in Grand Est 60
- Research Services companies in the Rhône department 49
- Research Services companies in Nouvelle-Aquitaine 48
- Research Services companies in the Bouches-du-Rhône department 47
- Research Services companies in the Essonne department 35
- Research Services companies in the Haute-Garonne department 30
- Research Services companies in the Isère department 29
- Research Services companies in the Gironde department 28
- Research Services companies in Hauts-de-France 27
- Research Services companies in Paris 148
- Research Services companies in Marseille 33