# Top 30 multinational companies in the Essonne department

Tamtam tracks 156 multinational companies headquartered in the Essonne department. This list ranks the 30 largest by number of employees on LinkedIn, led by Carrefour, Intermarché and École Polytechnique. Their median headcount is 1,048. Half of them were founded in 1969 or later. The most common headquarters are Palaiseau (6), Massy (5) and Les Ulis (3).

The Essonne department hosts a significant presence of multinational companies, primarily characterized by large and mid-sized firms. Key sectors include retail, with major players like Carrefour and Intermarché dominating the grocery market, and specialized manufacturing, exemplified by Eurostyle Systems in high-precision plastics for automotive. The area also features strong representation in public works and construction, with companies such as RAZEL-BEC and Menard.

A notable characteristic of these companies is the prevalence of research and higher education institutions. École Polytechnique, CentraleSupélec, and AgroParisTech, all located in Palaiseau or nearby, highlight a cluster of academic excellence and research services, indicating a strong emphasis on science, technology, and sustainable development within the region.

🇫🇷 Essonne · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Carrefour](https://www.tamtam.ai/c/carrefour) (carrefour.fr)<br>Operates grocery retail formats: hypermarkets, supermarkets, cash & carry, convenience stores. Major employer and local supply chain partner in over 30 countries. | Retail | 🇫🇷 Massy | 107,234 |  |
| 2 | [Intermarché](https://www.tamtam.ai/c/intermarche) (carrieres-mousquetaires.com)<br>Specializing in fresh products, this company operates a network of over 2,300 stores in Europe, offering various formats to meet customer needs | Retail | 🇫🇷 Bondoufle | 49,569 | 1969 |
| 3 | [École Polytechnique](https://www.tamtam.ai/c/ecole-polytechnique) (polytechnique.edu)<br>Leading French institution offering top-level research, academic programs, and innovation in science and technology with a strong emphasis on excellence and humanist traditions | Research Services | 🇫🇷 Palaiseau | 4,377 | 1794 |
| 4 | [Réseau DEF](https://www.tamtam.ai/c/reseau-def) (reseau-def.com)<br>International network of expert companies providing detection, extinguishing, smoke extraction, and exit management systems through manufacturing and research facilities across several countries. | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Massy | 3,484 | 1958 |
| 5 | [LFB](https://www.tamtam.ai/c/lfb) (groupe-lfb.com)<br>Develops, manufactures, and markets medicinal products for serious, often rare diseases in Hemostasis, Immunology, and Intensive Care, with a focus on plasma-derived products and biotechnologies. | Pharmaceutical Manufacturing | 🇫🇷 Les Ulis | 2,733 | 1994 |
| 6 | [RAZEL-BEC \| FAYAT Group](https://www.tamtam.ai/c/razel-bec-fayat-group) (fayat.com)<br>Specializes in public works including civil engineering, infrastructure, underground works, industrial and nuclear projects, environmental and urban engineering with innovative solutions. | Construction | 🇫🇷 Saclay | 2,233 |  |
| 7 | [HORIBA France](https://www.tamtam.ai/c/horiba-france) (horiba.com)<br>HORIBA France manufactures instruments to help individuals tackle all their challenges | Measuring and Control Instrument Manufacturing | 🇫🇷 Palaiseau | 2,200 |  |
| 8 | [CentraleSupélec](https://www.tamtam.ai/c/centralesupelec) (centralesupelec.fr)<br>Provides higher education with 4,500 students across three campuses, 370 staff, 3 international schools, 5 associated labs, and partners with 176 universities and 140 companies. | Higher Education | 🇫🇷 Gif-sur-Yvette | 2,125 | 1829 |
| 9 | [ASN](https://www.tamtam.ai/c/asn) (asn.com)<br>Designs, installs, and maintains global optical submarine cable systems for telecom, content providers, and offshore oil and gas industries. | Telecommunications | 🇫🇷 Les Ulis | 1,717 | 1994 |
| 10 | [Menard](https://www.tamtam.ai/c/menard) (menard-group.com)<br>A global leader in ground improvement works using innovative technologies to optimize geotechnical conditions for various infrastructure projects worldwide | Construction | 🇫🇷 Orsay | 1,590 |  |
| 11 | [UTAC](https://www.tamtam.ai/c/utac) (utac.com)<br>Advancing mobility industry towards safer, cleaner future. Provides large range of services to bring vehicles to market. | Motor Vehicle Manufacturing | 🇫🇷 Linas | 1,249 |  |
| 12 | [Eurostyle Systems](https://www.tamtam.ai/c/eurostyle-systems-les-ulis) (eurostyle-systems.fr)<br>Design and production of industrial solutions specializing in high-precision plastics processing and leather materials for global automotive markets across fourteen production sites. | Manufacturing | 🇫🇷 Les Ulis | 1,158 | 1964 |
| 13 | [AgroParisTech](https://www.tamtam.ai/c/agroparistech) (agroparistech.fr)<br>Educates professionals in life and environmental sciences, focusing on sustainable resource management, innovation, and bioeconomy through various academic programs. | Higher Education | 🇫🇷 Palaiseau | 1,093 | 2007 |
| 14 | [HORIBA for Materials](https://www.tamtam.ai/c/horiba-for-materials) (horiba.com)<br>Researching, developing new materials, improving manufacturing, and implementing recycling solutions for sustainability across the material supply chain. | Research Services | 🇫🇷 Palaiseau | 1,053 |  |
| 15 | [La Vie Claire, S.A.](https://www.tamtam.ai/c/la-vie-claire-s-a) (lavieclaire.com)<br>Retail business based in Rhone, France, with a focus on providing various products to customers at their location in Montagny | Retail | 🇫🇷 Grigny | 1,048 | 1947 |
| 16 | [Sebia](https://www.tamtam.ai/c/sebia) (sebia.com)<br>Global specialty in vitro diagnostic leader for screening and monitoring various diseases, including oncology, diabetes, and autoimmunity. | Medical Equipment Manufacturing | 🇫🇷 Lisses | 1,018 | 1967 |
| 17 | [Télécom Paris](https://www.tamtam.ai/c/telecom-paris) (telecom-paris.fr)<br>A leading educational institution in ICT, offering various programs in engineering, masters, and PhD, with a focus on innovation and entrepreneurship in the digital world | Higher Education | 🇫🇷 Palaiseau | 953 | 1878 |
| 18 | [SIFA](https://www.tamtam.ai/c/sifa) (sifalogistics.com)<br>Provides tailored logistics solutions globally, combining human expertise and technology for end-to-end management of transport and supply chains, including real-time tracking. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Villejust | 951 | 1951 |
| 19 | [ENSTA](https://www.tamtam.ai/c/ensta) (ensta.fr)<br>Leading public institution for higher education, research, and innovation. Offers engineering cycles, master's, doctorates, and specialized master's degrees for scientific and technical excellence. | Higher Education | 🇫🇷 Palaiseau | 916 | 1741 |
| 20 | [Paris-Sud University (Paris XI)](https://www.tamtam.ai/c/paris-sud-university-paris-xi) (universite-paris-saclay.fr)<br>A prestigious research university focused on understanding the world, student success, and meeting society's needs with top student integration into the workforce | Higher Education | 🇫🇷 Orsay | 910 | 1970 |
| 21 | [Carrefour Property](https://www.tamtam.ai/c/carrefour-property) (carrefourproperty.fr)<br>Property owner for hypermarkets and supermarkets in France, Spain, and Italy, managing over 4 million square meters across 1,000 European sites, partnering with Carmila for commercial centers. | Real Estate | 🇫🇷 Massy | 901 | 2009 |
| 22 | [NOVELTY](https://www.tamtam.ai/c/novelty) (novelty.fr)<br>Specialist in technical support for event industries, offering services like audiovisual equipment rental, engineering, sales, installation, and maintenance of audiovisual systems | Events Services | 🇫🇷 Longjumeau | 835 | 1973 |
| 23 | [Infovista](https://www.tamtam.ai/c/infovista) (infovista.com)<br>Empowers service providers and enterprises with data-driven solutions for optimizing network performance, enhancing customer experience, and driving business success. | Software Development | 🇫🇷 Massy | 834 | 1995 |
| 24 | [L-Acoustics](https://www.tamtam.ai/c/l-acoustics) (l-acoustics.com)<br>Leading manufacturer of professional sound solutions founded in 1984 near Paris, with presence in over 80 countries and specializing in modern line array technology and multichannel sound systems | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Marcoussis | 700 | 1984 |
| 25 | [Secours Islamique France](https://www.tamtam.ai/c/secours-islamique-france) (secours-islamique.org)<br>Provides emergency aid, development programs, and social support in water, food security, child protection, and vulnerable populations worldwide. | Non-profit Organizations | 🇫🇷 Massy | 658 | 1991 |
| 26 | [ENERIA](https://www.tamtam.ai/c/eneria) (eneria.fr)<br>The company provides innovative and competitive energy solutions worldwide, including gensets, engines, photovoltaic panels, and energy management systems | Industrial Machinery Manufacturing | 🇫🇷 Montlhéry | 636 | 1906 |
| 27 | [Bruneau](https://www.tamtam.ai/c/bruneau) (bruneau.fr)<br>provides over 25,000 office furniture, seating, and stationery products with fast delivery, serving businesses and professionals across France | Retail Office Equipment | 🇫🇷 Villebon-sur-Yvette | 575 | 1955 |
| 28 | [French bee](https://www.tamtam.ai/c/french-bee) (frenchbee.com)<br>A French long-haul airline offering affordable flights to various destinations with modern Airbus A350 planes and a focus on reducing carbon footprint | Airlines and Aviation | 🇫🇷 Wissous | 540 | 2016 |
| 29 | [record portes automatiques](https://www.tamtam.ai/c/record-portes-automatiques) (recorddoors.com)<br>Designs, manufactures, installs, and maintains a wide range of automatic doors and related products for commercial and institutional sectors. | Wholesale Building Materials | 🇫🇷 Champlan | 523 | 1970 |
| 30 | [ECF Group](https://www.tamtam.ai/c/ecf-group) (ecfgroup.com)<br>Global supplier of small equipment, consumables, and disposable products to hospitality professionals with efficient services and distribution networks in 19 countries | Wholesale | 🇫🇷 Grigny | 501 | 1880 |

## 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 Essonne department

- [The largest companies in the Essonne department](https://www.tamtam.ai/l/largest-companies-essonne) (1,149)
- [Companies with in-house R&D in the Essonne department](https://www.tamtam.ai/l/r-and-d-companies-essonne) (198)
- [Manufacturers in the Essonne department](https://www.tamtam.ai/l/manufacturers-essonne) (127)
- [Hardware manufacturers in the Essonne department](https://www.tamtam.ai/l/hardware-companies-essonne) (114)
- [Distributors and wholesalers in the Essonne department](https://www.tamtam.ai/l/distributors-and-wholesalers-essonne) (76)
- [IT Services and IT Consulting companies in the Essonne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-essonne) (70)
- [Professional services firms in the Essonne department](https://www.tamtam.ai/l/professional-services-firms-essonne) (68)
- [Public sector organisations in the Essonne department](https://www.tamtam.ai/l/public-sector-organisations-essonne) (66)
- [Aerospace and defence companies in the Essonne department](https://www.tamtam.ai/l/aerospace-and-defense-companies-essonne) (65)
- [IT services companies in the Essonne department](https://www.tamtam.ai/l/it-services-companies-essonne) (60)
- [Retail chains in the Essonne department](https://www.tamtam.ai/l/retail-chains-essonne) (59)
- [Construction companies in the Essonne department](https://www.tamtam.ai/l/construction-companies-essonne) (56)
- [Software Development companies in the Essonne department](https://www.tamtam.ai/l/software-development-companies-essonne) (51)
- [Pharmaceutical companies in the Essonne department](https://www.tamtam.ai/l/pharmaceutical-companies-essonne) (45)
- [Electronics and semiconductor companies in the Essonne department](https://www.tamtam.ai/l/electronics-companies-essonne) (44)
- [Research institutes in the Essonne department](https://www.tamtam.ai/l/research-institutes-essonne) (42)
- [Events Services companies in the Essonne department](https://www.tamtam.ai/l/events-services-companies-essonne) (41)
- [SaaS companies in the Essonne department](https://www.tamtam.ai/l/saas-companies-essonne) (41)
- [Consulting firms in the Essonne department](https://www.tamtam.ai/l/consulting-firms-essonne) (40)
- [Family-owned companies in the Essonne department](https://www.tamtam.ai/l/family-owned-companies-essonne) (38)
- [Contract manufacturers in the Essonne department](https://www.tamtam.ai/l/contract-manufacturers-essonne) (35)
- [Research Services companies in the Essonne department](https://www.tamtam.ai/l/research-services-companies-essonne) (35)
- [Critical infrastructure operators in the Essonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-essonne) (32)
- [Education providers in the Essonne department](https://www.tamtam.ai/l/education-companies-essonne) (30)

## The same list elsewhere in France

- [Multinational companies in France](https://www.tamtam.ai/l/multinational-companies-france) (11,864)
- [Multinational companies in Île-de-France](https://www.tamtam.ai/l/multinational-companies-ile-de-france) (6,028)
- [Multinational companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/multinational-companies-auvergne-rhone-alpes) (1,318)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [Multinational companies in Grand Est](https://www.tamtam.ai/l/multinational-companies-grand-est) (787)
- [Multinational companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/multinational-companies-provence-alpes-cote-dazur) (638)
- [Multinational companies in the Rhône department](https://www.tamtam.ai/l/multinational-companies-rhone) (577)
- [Multinational companies in Occitanie](https://www.tamtam.ai/l/multinational-companies-occitanie) (532)
- [Multinational companies in Hauts-de-France](https://www.tamtam.ai/l/multinational-companies-hauts-de-france) (511)
- [Multinational companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/multinational-companies-nouvelle-aquitaine) (450)
- [Multinational companies in Pays de la Loire](https://www.tamtam.ai/l/multinational-companies-pays-de-la-loire) (390)
- [Multinational companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/multinational-companies-bouches-du-rhone) (351)
- [Multinational companies in the Nord department](https://www.tamtam.ai/l/multinational-companies-nord) (332)
- [Multinational companies in Brittany](https://www.tamtam.ai/l/multinational-companies-brittany) (264)
- [Multinational companies in the Haute-Garonne department](https://www.tamtam.ai/l/multinational-companies-haute-garonne) (246)
- [Multinational companies in the Yvelines department](https://www.tamtam.ai/l/multinational-companies-yvelines) (226)
- [Multinational companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/multinational-companies-bourgogne-franche-comte) (220)
- [Multinational companies in Normandy](https://www.tamtam.ai/l/multinational-companies-normandy) (216)
- [Multinational companies in the Gironde department](https://www.tamtam.ai/l/multinational-companies-gironde) (200)
- [Multinational companies in the Val-de-Marne department](https://www.tamtam.ai/l/multinational-companies-val-de-marne) (200)
- [Multinational companies in the Seine-Saint-Denis department](https://www.tamtam.ai/l/multinational-companies-seine-saint-denis) (198)
- [Multinational companies in Paris](https://www.tamtam.ai/l/multinational-companies-paris) (3,531)
- [Multinational companies in Lyon](https://www.tamtam.ai/l/multinational-companies-lyon) (283)
- [Multinational companies in Boulogne-Billancourt](https://www.tamtam.ai/l/multinational-companies-boulogne-billancourt) (188)

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