| # | Company | Employees |
|---|---|---|
| 1 | 23,074 | |
| 2 | 19,468 | |
| 3 | 7,814 | |
| 4 |
Pasteur Networkpasteur-network.org
Global health network promoting cooperation in biomedical research, public health, training, and innovation with a focus on One Health approach |
7,700 |
| 5 |
Ecole normale supérieureens.psl.eu
Research and teaching institution, located in Paris, offering interdisciplinary training. It recruits students for master's and doctoral degrees, fostering scientific excellence. |
6,198 |
| 6 | 6,088 | |
| 7 |
Institut Pasteurpasteur.fr
Non-profit foundation specializing in biomedical research, public health, training, and technological innovation to combat infectious diseases worldwide. |
4,743 |
| 8 |
École Polytechniquepolytechnique.edu
Leading French institution offering top-level research, academic programs, and innovation in science and technology with a strong emphasis on excellence and humanist traditions |
4,377 |
| 9 |
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 |
| 10 | 3,832 | |
| 11 |
INRA French National Institute for Agricultural Researchinra.fr
Research institute for agriculture, food, and environment, developing solutions for multiperformance agriculture, high quality food, and sustainable resource management. |
3,529 |
| 12 |
IFP Energies nouvellesifpenergiesnouvelles.fr
National research and training institute, innovating for a decarbonized, sustainable world. Low-carbon solutions pave the way for future industrial sectors. |
3,323 |
| 13 | 2,940 | |
| 14 |
Paris-Pantheon-Assas Universityassas-universite.fr
Cultivates synergy research, teaching, professionalization. Offers wide courses: law, political science, economics, management, information, communication, journalism, digital technology, entrepreneurship, business strategy. |
2,513 |
| 15 | 2,431 | |
| 16 |
Université d'Angersuniv-angers.fr
A university in the heart of Val de Loire, offering over 450 degrees, with a focus on research and strong partnerships nationally and internationally |
2,337 |
| 17 |
UVSQ Université de Versailles Saint-Quentin-en-Yvelinesuvsq.fr
Provides diverse higher education, conducts innovative research across various fields, and fosters technological advancements with strong industry and international partnerships. |
2,170 |
| 18 |
Cabinet Vétérinaireveterinaire-nuham.com
Research company specializing in veterinary science, focusing on animal health and clinical studies based in France. |
2,107 |
| 19 |
Ifremerifremer.fr
An organization conducting research on oceans, marine environment, and sustainable maritime activities, providing knowledge, innovation, and expertise for public policy and socio-economic activities |
1,703 |
| 20 |
ITER Organizationiter.org
International collaboration building the world’s largest fusion device to demonstrate fusion energy viability and support future power plant development. |
1,654 |
| 21 | 1,500 | |
| 22 |
Pierre and Marie Curie Universitysorbonne-universite.fr
A world-class research university providing top scientific and medical education, supporting academic excellence and real-world skills for future scientists |
1,469 |
| 23 |
Université Paris-Sorbonnelettres.sorbonne-universite.fr
An institution rich in history, the Faculty of Arts & Humanities in Paris is dedicated to literature, languages, arts, and social sciences, promoting critical thinking and creativity |
1,318 |
| 24 |
École normale supérieure de Lyonens-lyon.fr
Higher education institution specializing in interdisciplinary research and training, fostering scientific excellence and social engagement in education and research. |
1,268 |
| 25 |
EHESS - Ecole des Hautes Etudes en Sciences Socialesehess.fr
An academic institution known for in-depth analysis of the past and research on contemporary societies, influencing social science paradigms globally |
1,246 |
| 26 | 1,230 | |
| 27 |
Danone Research & Innovationdanoneresearch.com
Global team of scientists and experts advancing nutrition, food, hydration science, and technology to improve health through food worldwide. |
1,071 |
| 28 |
Université de Technologie de Compiègne (UTC)utc.fr
A public institution combining university and engineering school aspects, focusing on innovation, research, and professional integration for 4500 students in technology fields |
1,062 |
| 29 |
HORIBA for Materialshoriba.com
Researching, developing new materials, improving manufacturing, and implementing recycling solutions for sustainability across the material supply chain. |
1,053 |
| 30 |
ENA - Ecole nationale d'administrationena.fr
Former French national administration school, replaced by the National Institute of Public Service since January 2022, no longer active. |
865 |
| 31 | 734 | |
| 32 |
ESRF - The European Synchrotronesrf.fr
International science facility providing advanced synchrotron radiation for research in biology, medicine, chemistry, physics, and environmental sciences. |
672 |
| 33 | 664 | |
| 34 |
Ecole des Mines d'Alèsimt-mines-ales.fr
Higher education school offering engineering courses in Environmental, Mechanical, Production, and Software Engineering Research laboratories provide internship opportunities to PhD students |
622 |
| 35 |
AIXIAL GROUPaixialgroup.com
Specialized partner in clinical development, providing comprehensive trial design, execution, functional service delivery, resources, and expert consulting for efficient clinical trials. |
616 |
| 36 |
Institut Imagineinstitutimagine.org
Translational research on genetic diseases combining scientific and clinical expertise to develop new therapies and diagnostics for patients. |
550 |
| 37 | 519 | |
| 38 |
Université Paris-Est Marne-la-Valléeuniv-gustave-eiffel.fr
Public university focused on innovation, research, and education, collaborating closely with economic sectors and practicing unique governance models. |
519 |
| 39 |
IARC - International Agency for Research on Cancer / World Health Organizationiarc.who.int
Coordinate and conduct research on cancer causes, mechanisms, prevention strategies, epidemiology, laboratory studies, and disseminate scientific information globally. |
515 |
| 40 |
ARVALIS - Institut du végétalarvalis.fr
Technical institute performs applied research on agriculture, focusing on arable crops from production to preservation for food and non-food uses. |
510 |
| 41 |
Université de Lyonuniversite-lyon.fr
Coordination of academic institutions in Lyon Saint-Étienne, supporting strategies, managing common projects, and promoting the regional academic territory. |
487 |
| 42 |
ILL - Institut Laue Langevinill.eu
Provides scientists with high flux neutrons and instruments for fundamental research in physics, chemistry, biology, materials, and nuclear science. |
476 |
| 43 |
SynTech Research Groupsyntechresearch.com
Contract research, regulatory support, product development, and market services for agrochemical, biostimulant, biocontrol, and seed companies worldwide. |
460 |
| 44 | 456 | |
| 45 |
CEA-Litenliten.cea.fr
Leading European research institute focusing on solar energy, batteries, hydrogen, and circular economy while developing decarbonization tools and eco-innovative industrial partnership solutions. |
445 |
| 46 |
MSHmshsud.org
Research federation affiliated with CNRS, uniting sciences for alternative development at Maison des Sciences de l'Homme Sud |
441 |
| 47 |
Ametra Engineeringametragroup.com
This company accompanies businesses in the design and development of innovative projects, leveraging technological convergence and industry expertise for tailored solutions. |
423 |
| 48 | 412 | |
| 49 |
Synchrotron SOLEILsynchrotron-soleil.fr
Third generation synchrotron providing advanced experimental facilities for material geometry and properties research, serving diverse scientific users worldwide. |
403 |
| 50 |
Observatoire de Paris | PSLobservatoiredeparis.psl.eu
Public institution of higher education and research specializing in astronomy and astrophysics Focus on research, education, and knowledge dissemination Affiliated with University PSL |
401 |
| 51 |
LVMH RECHERCHElvmh.com
Creates exceptional makeup, skincare, and perfume products for LVMH luxury brands, focusing on performance, sensoriality, and environmental respect through advanced research and open innovation. |
398 |
| 52 |
Institut Pasteur de Lillepasteur-lille.fr
A foundation focusing on fundamental research and prevention in infectious diseases, cancer, cardiovascular, and neurodegenerative diseases to improve health and longevity |
383 |
| 53 |
IRIT (Institut de Recherche en Informatique de Toulouse)irit.fr
Leaders in computer science research since 1990, with over 690 members including researchers and PhD students from top French institutions Specializing in various fields like AI and computer networks |
383 |
| 54 |
GROUPE PARERAgroupe-parera.com
A company specializing in cartography, CAD, GIS, and network management for clients globally, offering various services from mapping to software development |
372 |
| 55 |
IFSTTARuniv-gustave-eiffel.fr
Public scientific, technological institution conducts applied research, expert appraisals in transport, infrastructure, natural hazards, urban issues for improved living conditions, sustainable development. |
370 |
| 56 |
Groupe D&Sds-groupe.fr
Assists businesses in managing risks, particularly in nuclear environments, offering services such as HSE, asbestos, training, EPVR, studies, and radioprotection. |
367 |
| 57 |
IRT Saint Exupéryirt-saintexupery.com
Combines public and private partners, developing research activities with global technology platforms and high-level skills for breakthrough technologies. |
366 |
| 58 |
Saint-Gobain Innovation Hub Europesgr-paris.saint-gobain.com
Research center develops high-level skills, technologies for group activities, interacts with academia, anticipates scientific advances, recruits talent. |
360 |
| 59 |
Staphytstaphyt.com
A multinational company with 700 employees in Europe, North Africa, and Brazil, specializing in agrosciences field experimentation, laboratory testing, regulatory advice, and registration dossier management |
345 |
| 60 |
Laboratoire de Physique des Plasmaspolytechnique.fr
Researching space, cold, and magnetic fusion plasmas, supporting major projects like ITER, and developing plasma technologies for various applications. |
339 |
| 61 |
Institut technologique FCBAfcba.fr
Supports wood and furniture industries through research, development, technical assistance, training, standardization, and certification across various sectors. |
330 |
| 62 |
CLEEVENcleeven.com
Offers engineering consulting services, focusing on delivering exceptional technical skills and human qualities to support clients in achieving their project goals. |
328 |
| 63 |
L'Atelieratelier-maker.fr
A collaborative innovation space creating computer and physical prototypes, providing equipment for businesses and students, offering technical support, and developing projects bridging digital and physical worlds #innovation #technology #epita #epitech |
327 |
| 64 |
Institut Cochininstitutcochin.fr
A research center focusing on advancing knowledge of biological mechanisms in humans, with research areas including cancer, immunology, endocrinology, and genetics |
324 |
| 65 | 314 | |
| 66 |
CRCL Centre de Recherche en Cancérologie de Lyoncrcl.fr
A cancer research center affiliated with various prestigious institutions, aiming to enhance international recognition, knowledge transfer to clinics and industry, and education |
309 |
| 67 |
Institut National de Recherche Agronomique (INRA)inrae.fr
Leading agricultural research institute in Europe, focusing on food, agriculture, and environmental research to address key societal challenges through exploration, understanding, experimentation, and anticipation |
299 |
| 68 |
Sector Groupsector-group.net
Provides expert risk management consultancy services covering technological, human, environmental, legal, and economic risks, ensuring system performance and safety for people and the environment. |
297 |
| 69 |
Institut de la Visioninstitut-vision.org
The company is one of Europe's leading integrated vision research centers, bringing together fundamental, clinical, and industrial research to develop novel vision-related therapeutics and technologies |
292 |
| 70 | 287 | |
| 71 | 286 | |
| 72 |
ECIAgroupe-ecia.com
It specializes in nuclear engineering, focusing on risk management, utilities, and supporting the entire lifecycle of installations. |
277 |
| 73 | 260 | |
| 74 | 255 | |
| 75 |
INRAE Occitanie-Toulouseinrae.fr
Conducting multidisciplinary research in biology and engineering to develop circular bioeconomies, accelerate agroecological transitions, and improve global animal health and food toxicology. |
250 |
| 76 |
GANILganil-spiral2.eu
A national accelerator for heavy ions research and experimentation, providing cutting-edge facilities for scientific exploration and discovery |
248 |
| 77 |
Éveha - Études et valorisations archéologiqueseveha.fr
A leading private operator in preventive archaeology, offering excavation, archaeological studies, and heritage enhancement services to public and private entities With 300+ employees across 14 locations |
243 |
| 78 |
Institut Néel CNRSneel.cnrs.fr
A fundamental research lab specializing in condensed matter physics, with interdisciplinary collaborations in chemistry, engineering, biology, and astrophysics |
237 |
| 79 | 236 | |
| 80 |
Efectisefectis.com
Specializes in fire and explosion science, engineering, risk analysis, testing, training, inspection, and certification with global laboratories. |
235 |
| 81 |
LABÉOlaboratoire-labeo.fr
Performs extensive high-tech analyses for animal health, water, and food products, serving public health through sanitary and epidemiological monitoring and environmental oversight. |
232 |
| 82 |
Institut Jean Lamour (IJL)ijl.univ-lorraine.fr
Research laboratory specialized in materials science, metallurgy, plasmas, surfaces and electronics, conducting fundamental and applied engineering studies within French academic research units. |
230 |
| 83 |
CEA IRESNEcea.fr
A nuclear research institute focused on developing innovations for low-carbon nuclear energy, with three R&D departments and global recognition for its facilities |
228 |
| 84 |
EURECOMeurecom.fr
A graduate school and research center in digital science, focusing on data science, digital security, and communication systems with strong industry ties |
227 |
| 85 |
C2N - Centre de Nanosciences et de Nanotechnologiesc2n.universite-paris-saclay.fr
Research in material science, nanophotonics, nanoelectronics, nanobiotechnologies, microsystems, fundamental and applied nanotechnology science. |
225 |
| 86 |
EPSYL - ALCEN Groupepsyl-alcen.com
Designing and optimizing systems for industrial sectors, combining multiphysics modeling, simulation, and systems integration expertise, notably in thermal, mechanical, and fluidic domains. |
224 |
| 87 | 221 | |
| 88 |
Laboratoire de Génie Chimique Toulouse / Chemical Engineering Research Center of Toulouselgc.cnrs.fr
Research center develops experimental, theoretical work in chemical engineering, transforming matter and energy processes, addressing societal issues: water, energy, biorefinery, materials, health. |
216 |
| 89 | 215 | |
| 90 |
CIRI Centre International de Recherche en Infectiologieciri.ens-lyon.fr
The organization is dedicated to understanding and controlling infectious diseases through cutting-edge research in bacteriology, immunology, and virology |
204 |
| 91 |
Institut de Myologieinstitut-myologie.org
Coordination of patient care, fundamental and clinical research, and education focused on neuromuscular diseases and muscle-related health issues. |
201 |
| 92 |
LRGP I Laboratoire Réactions et Génie des Procédéslrgp-nancy.cnrs.fr
Researching and developing processes from nano to large systems, focusing on energy production, gas/liquid treatment, biomolecules, biomass transformation, and ecodesign. |
199 |
| 93 |
INEM - Institut Necker Enfants Maladesinstitut-necker-enfants-malades.fr
Research center studying diseases in children and young people, focusing on hereditary and environmental factors, to develop innovative diagnostics and treatments. |
195 |
| 94 |
ICAREgroupeicare.com
Guidance on international regulations for health products, ensuring compliance and safety through biocompatibility, microbiology, quality, and regulatory affairs services, including training and consulting. |
188 |
| 95 |
Centre Informatique National de l'Enseignement supérieurcines.fr
National public establishment provides intensive computing power for researchers, preserves digital heritage, and hosts IT equipment for public organizations, primarily higher education and research. |
184 |
| 96 |
IPBS-Toulouse (CNRS-UT3)ipbs.fr
A leading research center in Toulouse focusing on cancer and infectious diseases, conducting molecular and cellular biology research to discover therapeutic targets |
184 |
| 97 |
ICube Strasbourgicube.unistra.fr
Researching engineering, computer science, and imaging with multiple university and national agency oversight. |
183 |
| 98 |
Compaslecompas.fr
Specializing in social observation of territories, creating observatories, conducting studies, and providing training for local governments to address social realities effectively |
182 |
| 99 |
Institut de Biologie Structurale (IBS)ibs.fr
Research center in Grenoble, France focusing on integrative structural biology, molecular mechanisms, and complex interactions between cells and pathogens |
181 |
| 100 |
Institut Jacques Monodijm.fr
A leading research institute in Paris focused on fundamental biology, conducting interdisciplinary research at the intersection of various scientific fields |
181 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Oct 9, 2026.
More company lists in France
- The largest companies in France 75,937
- IT Services and IT Consulting companies in France 4,334
- Software Development companies in France 3,751
- Business Consulting and Services companies in France 2,758
- Law Practice companies in France 2,381
- Advertising Services companies in France 2,082
- Retail companies in France 1,953
- Real Estate companies in France 1,856
- Events Services companies in France 1,775
- Higher Education companies in France 1,728
- Food and Beverage Manufacturing companies in France 1,714
- Financial Services companies in France 1,652
- Government Administration companies in France 1,648
- Accounting companies in France 1,636
- Construction companies in France 1,598
- Industrial Machinery Manufacturing companies in France 1,355
- Hospitality companies in France 1,340
- Technology, Information and Internet companies in France 1,305
- Legal Services companies in France 1,303
- Insurance companies in France 1,243
- Hospitals and Health Care companies in France 1,222
- Professional Training and Coaching companies in France 1,218
- Civic and Social Organizations companies in France 1,092
- Truck Transportation companies in France 984