The companies listed are primarily manufacturers in the Isère department, ranging from well-established industrial firms to newer ventures. They include those in specialized sectors like semiconductor manufacturing, as exemplified by Soitec, which produces innovative semiconductor materials, and LYNRED, focused on infrared technologies. Other companies, such as ARaymond, design and manufacture fastening systems, while Vicat specializes in cement production. Verkor is a more recent addition, producing low-carbon batteries, and Rossignol Group is known for winter sports equipment. Petzl designs tools for exploration, and MTB specializes in recycling complex waste.
A notable characteristic among these companies is their long history, with many founded in the 19th or early 20th century, such as ARaymond (1865), Vicat (1853), Rossignol Group (1907), and Condat SA (1854). This indicates a concentration of long-standing industrial expertise in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
ARaymondaraymond.com
Design and manufacture of sustainable fastening, fluid connection, and integration systems for automotive, energy, healthcare, agriculture, and construction industries worldwide through collaborative innovation. |
2,155 | |||
| 2 |
Soitecsoitec.com
A world leader in innovative semiconductor materials production for various electronics markets, striving for disruptive innovation with energy-efficient, competitive products |
1,935 | |||
| 3 | 1,261 | ||||
| 4 |
Verkorverkor.com
Produces low-carbon batteries in France and Europe for electric vehicles and stationary storage, with a Gigafactory operational by 2025. |
997 | |||
| 5 | 990 | ||||
| 6 |
Rossignol Groupgrouperossignol.com
Leading manufacturer of winter sports equipment, specializing in skis and ski boots, with a focus on diversification and growth. |
880 | |||
| 7 |
Cegelec CEMcegelec-cem.fr
Designs, builds, and integrates equipment for new nuclear constructions, renovations, decommissioning, and high-stakes mechanical and electromechanical engineering projects in nuclear environments. |
770 | |||
| 8 |
LYNREDlynred.com
Designs and manufactures high-quality infrared technologies for aerospace, defense, and commercial markets, including IR detectors for military and thermal imaging equipment. |
749 | |||
| 9 | 711 | ||||
| 10 |
MTBmtb-recycling.fr
Specializes in recycling complex waste, manufacturing recycling machines, and engineering turnkey plants for efficient industrial waste management and recovery. |
653 | |||
| 11 |
Serge Ferrari Groupsergeferrari.com
Designs and manufactures innovative composite fabrics for light architectural and exterior landscaping applications focused on durability, safety, design, comfort, and eco-responsibility |
462 | |||
| 12 | 384 | ||||
| 13 |
Minitubesminitubes.com
A company specializing in custom high precision metal tubing manufacturing, offering innovative solutions from design to production with tight tolerance control |
346 | |||
| 14 | 341 | ||||
| 15 | 331 | ||||
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 |
MasterGridmastergrid.com
MasterGrid specializes in electrical system services from high to low voltage, providing tailored solutions to optimize system lifecycle and improve environmental impact |
328 | |||
| 17 |
ECM Technologies - Industrial Furnacesecm-furnaces.com
Design and supply of vacuum, high-temperature, and thermochemical process machines and solutions for various industrial sectors worldwide. |
326 | |||
| 18 |
Telencotelenco.com
Industrial group designing, manufacturing, and distributing equipment for telecoms and datacom networks through production sites, B2B e-commerce, engineering, and technician training services. |
317 | |||
| 19 |
Waga Energywaga-energy.com
This company converts landfill gas into Renewable Natural Gas (RNG) using patented technology, reducing CO2 emissions and supplying households with biomethane |
316 | |||
| 20 | 312 | ||||
| 21 |
Groupe Pierre Martinetmartinet.fr
Producer of fresh prepared salads combining authentic recipes, culinary innovation, environmental responsibility, and strong team spirit across Europe. |
302 | |||
| 22 |
Teisseireteisseire.com
Leading producer of organic syrups and fruit juices, specializing in non-alcoholic refreshing beverages with iconic consumer and food service brands. |
287 | |||
| 23 |
ARTURIAarturia.com
Creates instruments and effects for music creation, encouraging musical discovery and artistic process with accessible and inspiring sonic experiences for musicians. |
253 | |||
| 24 |
MAFELEC TEAMmafelec.com
Designs subassemblies and equipment for harsh environments, providing innovative solutions for various sectors like HMI, railway, industry, and defense. |
249 | |||
| 25 |
ULISlynred.com
Global leader in designing and manufacturing high quality infrared technologies for aerospace, defense, and commercial markets, with a vast portfolio of detectors |
243 | |||
| 26 |
Skyepharma- Fully integrated CDMOskyepharma.fr
Develops, manufactures, and packages complex oral solid dosage forms. Provides tailored solutions from small-scale programs to commercial production for clients. |
232 | |||
| 27 |
Groupe Efiregroupe-efire.com
European leader in industrial sealing, fluids transfer, precision cutting, and technical protection with multiple brands and global clients. |
230 | |||
| 28 |
BioLogicbiologic.net
Design and manufacture of ultra-precise measurement instruments, including potentiostats and battery cyclers, for electrochemistry, material testing, and industrial battery product optimization. |
211 | |||
| 29 |
Groupe elydanelydan.eu
Specializing in manufacturing polymer products and solutions for infrastructure, networks, and buildings, this French industrial player is a leading European provider of polyethylene and polypropylene solutions |
203 | |||
| 30 |
SD SERVICESsdservices.fr
Provides bespoke utility vehicle outfitting, offering comprehensive solutions for professionals, ensuring safety, quality, and ready-to-use vehicles. |
203 | |||
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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 Isère department
- The largest companies in the Isère department 1,457
- Companies with in-house R&D in the Isère department 304
- Multinational companies in the Isère department 174
- Hardware manufacturers in the Isère department 143
- Retail chains in the Isère department 100
- Software Development companies in the Isère department 90
- Professional services firms in the Isère department 87
- Public sector organisations in the Isère department 80
- Distributors and wholesalers in the Isère department 78
- IT services companies in the Isère department 75
- SaaS companies in the Isère department 72
- Electronics and semiconductor companies in the Isère department 70
- Contract manufacturers in the Isère department 68
- IT Services and IT Consulting companies in the Isère department 68
- Family-owned companies in the Isère department 61
- Industrial Machinery Manufacturing companies in the Isère department 58
- Consulting firms in the Isère department 57
- Construction companies in the Isère department 52
- Pharmaceutical companies in the Isère department 47
- Education providers in the Isère department 46
- Medical device companies in the Isère department 43
- Critical infrastructure operators in the Isère department 41
- Energy companies in the Isère department 41
- Chemical companies in the Isère department 40
The same list elsewhere in France
- Manufacturers in France 6,697
- Manufacturers in Île-de-France 1,515
- Manufacturers in Auvergne-Rhône-Alpes 1,216
- Manufacturers in Grand Est 573
- Manufacturers in Nouvelle-Aquitaine 498
- Manufacturers in Pays de la Loire 484
- Manufacturers in Occitanie 433
- Manufacturers in Provence-Alpes-Côte d'Azur 394
- Manufacturers in Hauts-de-France 369
- Manufacturers in the Rhône department 322
- Manufacturers in Brittany 307
- Manufacturers in the Hauts-de-Seine department 285
- Manufacturers in Bourgogne-Franche-Comté 272
- Manufacturers in Normandy 245
- Manufacturers in Centre-Val de Loire 207
- Manufacturers in the Nord department 204
- Manufacturers in the Bouches-du-Rhône department 187
- Manufacturers in the Haute-Garonne department 159
- Manufacturers in the Gironde department 137
- Manufacturers in the Essonne department 127
- Manufacturers in the Loire-Atlantique department 125
- Manufacturers in the Loire department 122
- Manufacturers in the Bas-Rhin department 118
- Manufacturers in Paris 546