The Isère department is home to a diverse group of companies, with a notable presence of mid-sized and established firms. Key sectors include IT Services and Consulting, Manufacturing, and Semiconductor Manufacturing. For example, Tessi specializes in digitalizing customer relations and document processes, while ARaymond designs fastening systems for various industries. Soitec produces innovative semiconductor materials, and ALTRAD PREZIOSO offers technical engineering services for Oil, Gas, and Power Generation.
A recurring pattern is the concentration of headquarters in Grenoble, indicating its role as a regional economic hub. The companies listed span a wide range of founding years, from Vicat (1853) and ARaymond (1865) to more recent establishments like Soitec (1992) and ESRF - The European Synchrotron (1994), showcasing both historical industrial roots and newer technological developments.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 3,960 | ||||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
ALTRAD PREZIOSOaltradprezioso.com
Provides multidisciplinary technical engineering services primarily for Oil, Gas, and Power Generation, assisting clients with asset life extension and cost optimization. |
1,663 | |||
| 5 |
Grenoble Ecole de Managementgrenoble-em.com
A leading business school offering a wide range of educational programs in French and English, focused on solving complex problems for business and society |
1,595 | |||
| 6 | 1,261 | ||||
| 7 |
CEA-Letileti-cea.com
Development of micro- and nanotechnologies for smart, energy-efficient, and secure industrial applications including healthcare, energy, and digital sectors. |
1,223 | |||
| 8 |
HARDIS GROUPhardis-group.com
consulting and IT services company, a Salesforce pure player, and vendor of the Reflex logistics software suite for retail and supply chain transformation. |
1,015 | |||
| 9 | 990 | ||||
| 10 |
Rossignol Groupgrouperossignol.com
Leading manufacturer of winter sports equipment, specializing in skis and ski boots, with a focus on diversification and growth. |
880 | |||
| 11 | 840 | ||||
| 12 |
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 | |||
| 13 |
ESRF - The European Synchrotronesrf.fr
International science facility providing advanced synchrotron radiation for research in biology, medicine, chemistry, physics, and environmental sciences. |
672 | |||
| 14 |
MTBmtb-recycling.fr
Specializes in recycling complex waste, manufacturing recycling machines, and engineering turnkey plants for efficient industrial waste management and recovery. |
653 | |||
| 15 | 605 | ||||
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 |
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 | |||
| 17 |
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 | |||
| 18 | 384 | ||||
| 19 | 341 | ||||
| 20 |
Korus Groupkorusgroup.com
Korus Group offers innovative consulting, design, build, furniture, and maintenance solutions to enhance work environments globally, focusing on performance and people |
331 | |||
| 21 | 331 | ||||
| 22 |
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 | |||
| 23 |
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 | |||
| 24 |
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 | |||
| 25 |
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 | |||
| 26 | 312 | ||||
| 27 |
Groupe Pierre Martinetmartinet.fr
Producer of fresh prepared salads combining authentic recipes, culinary innovation, environmental responsibility, and strong team spirit across Europe. |
302 | |||
| 28 |
Groupe BBLgroupe-bbl.com
A specialist federation offering logistics solutions in contract logistics, overseas transport, road transport, and customs & compliance services Growth from 440 to 2100 employees in 5 years |
292 | |||
| 29 |
SPARTOOspartoo.com
Online retail platform offering extensive footwear and fashion products across Europe and China, with free delivery and returns service. |
290 | |||
| 30 |
Teisseireteisseire.com
Leading producer of organic syrups and fruit juices, specializing in non-alcoholic refreshing beverages with iconic consumer and food service brands. |
287 | |||
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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
- Manufacturers in the Isère department 178
- 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
- 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 787
- 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 450
- 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