# The 50 largest companies in the Yonne department

Tamtam tracks 220 companies headquartered in the Yonne department. This list ranks the 50 largest by number of employees on LinkedIn, led by HMY, Berner France and EPNAK. Their median headcount is 180. Half of them were founded in 1981 or later. The most common headquarters are Évry (21) and Auxerre (8).

The largest companies in the Yonne department include a mix of industries, with a notable presence of retail, healthcare, and public administration entities. These are predominantly mid-sized to large organizations, reflecting established operations in the region. HMY, for instance, is a global services leader in retail solutions, while Berner France distributes tools and consumables for professionals. Schiever operates over 160 retail stores across France and Europe, and Carrefour Banque & Assurance provides financial solutions.

A clear pattern observed is the significant number of companies involved in public service and social support. EPNAK supports individuals with disabilities, AFM-Téléthon fights rare genetic diseases through research, and both CENTRE HOSPITALIER D AUXERRE and CENTRE HOSPITALIER DE SENS are key public hospitals. The local government, Département de l'Yonne, also features prominently, alongside higher education institutions like Télécom SudParis.

🇫🇷 Yonne · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [HMY](https://www.tamtam.ai/c/hmy) (hmy-group.com)<br>Global services leader providing 361º vision and innovative solutions for retail industry, specializing in human-centered retail spaces from idea to production worldwide | Retail Office Equipment | 🇫🇷 Monéteau | 1,928 | 1960 |
| 2 | [Berner France](https://www.tamtam.ai/c/berner-france) (berner.eu)<br>Multichannel distributor specializing in tools, PPE, fastening products, chemicals, and consumables for professionals in construction, industrial maintenance, and mobility across various national networks. | Wholesale | 🇫🇷 Saint-Julien-du-Sault | 1,375 | 1969 |
| 3 | [EPNAK](https://www.tamtam.ai/c/epnak) (epnak.org)<br>The company supports over 6000 people with disabilities in achieving full citizenship through inclusive services, focusing on education, employment, housing, and healthcare | Government Administration | 🇫🇷 Évry | 1,189 | 1887 |
| 4 | [Schiever](https://www.tamtam.ai/c/schiever) (schiever.com)<br>Major retail distributor operating over 160 stores across France and Europe, focusing on local products, accessible goods, and community employment opportunities. | Retail Groceries | 🇫🇷 Avallon | 807 | 1871 |
| 5 | [Carrefour Banque & Assurance](https://www.tamtam.ai/c/carrefour-banque-and-assurance) (bit.ly)<br>A subsidiary of Carrefour, focusing on customer-centric financial solutions including credit, payment cards, savings, and insurance products through various channels | Banking | 🇫🇷 Évry | 775 | 1981 |
| 6 | [AFM-Téléthon](https://www.tamtam.ai/c/afm-telethon) (afm-telethon.fr)<br>A parent and patient-led association fighting against rare and debilitating genetic diseases through research, patient support, and public awareness initiatives | Civic and Social Organizations | 🇫🇷 Évry | 702 | 1958 |
| 7 | [Grand Paris Sud](https://www.tamtam.ai/c/grand-paris-sud) (grandparissud.fr)<br>Grand Paris Sud is a key economic hub in the Ile-de-France region, hosting major headquarters and leading industries in biotechnology, genomics, healthcare, and aeronautics | Government Administration | 🇫🇷 Évry | 650 | 2016 |
| 8 | [Fantasias](https://www.tamtam.ai/c/fantasias) (fantasias.fr)<br>Fantasias specializes in designing perfectly synchronized pyrotechnic shows with music in France and abroad | Performing Arts | 🇫🇷 Ligny-le-Châtel | 626 |  |
| 9 | [CENTRE HOSPITALIER D AUXERRE](https://www.tamtam.ai/c/centre-hospitalier-d-auxerre) (ght-unyon.fr)<br>Public hospital providing comprehensive medical and surgical care, emergency services, and specialized treatments to the local community. | Hospitals and Health Care | 🇫🇷 Auxerre | 496 |  |
| 10 | [Télécom SudParis](https://www.tamtam.ai/c/telecom-sudparis) (telecom-sudparis.eu)<br>Engineering school providing generalist and specialized engineering education, conducting high-level research closely linked to industry innovation. | Higher Education | 🇫🇷 Évry | 439 | 1979 |
| 11 | [CENTRE HOSPITALIER DE SENS](https://www.tamtam.ai/c/centre-hospitalier-de-sens) (ch-sens.fr)<br>A diverse team of 1,480 professionals dedicated to public hospital service, providing care to over 55,000 patients a year in various medical specialties | Hospitals and Health Care | 🇫🇷 Sens | 429 |  |
| 12 | [Institut Mines-Télécom Business School](https://www.tamtam.ai/c/institut-mines-telecom-business-school) (imt-bs.eu)<br>A prestigious business school, part of France's largest engineering school group, offering various programs from Bachelor to Doctorate level, focused on future-oriented education | Higher Education | 🇫🇷 Évry | 411 | 1979 |
| 13 | [Département de l'Yonne](https://www.tamtam.ai/c/departement-de-l-yonne) (yonne.fr)<br>Local government providing quality public services, infrastructure development, digital connectivity, and diverse employment opportunities across education, social, and administrative sectors. | Government Administration | 🇫🇷 Auxerre | 376 |  |
| 14 | [Martin Brower France](https://www.tamtam.ai/c/martin-brower-france) (martinbrower.fr)<br>Supply chain solutions provider supporting global fast-food leader with logistics, sustainability efforts, and collaborative service across multiple countries. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Évry | 362 | 1989 |
| 15 | [Genethon](https://www.tamtam.ai/c/genethon) (genethon.fr)<br>Nonprofit laboratory developing gene therapy treatments for rare genetic diseases including neuromuscular, immune, blood, liver, and vision disorders. | Biotechnology Research | 🇫🇷 Évry | 321 | 1990 |
| 16 | [Faculté Des Métiers de l'Essonne](https://www.tamtam.ai/c/faculte-des-metiers-de-l-essonne) (facmetiers91.fr)<br>A leading professional training center in southern France offering over 90 programs to +3000 students yearly in various fields | Professional Training and Coaching | 🇫🇷 Évry | 311 | 2005 |
| 17 | [TopSolid France](https://www.tamtam.ai/c/topsolid-france) (topsolid.com)<br>Creating ideas efficiently and effectively through fast-paced production processes | Software Development | 🇫🇷 Évry | 260 | 1984 |
| 18 | [FRUEHAUF](https://www.tamtam.ai/c/fruehauf) (fruehauf.com)<br>A French company specializing in manufacturing and marketing a wide range of trailers for transportation solutions, known for durability, innovation, and quality service | Truck Transportation | 🇫🇷 Auxerre | 256 | 1946 |
| 19 | [Groupe Jeannin](https://www.tamtam.ai/c/groupe-jeannin) (jeannin-automobiles.com)<br>Automotive group operating 43 dealerships and rental agencies across multiple departments, representing 13 car brands and offering used vehicles. | Retail Motor Vehicles | 🇫🇷 Auxerre | 234 | 1940 |
| 20 | [Sofidy](https://www.tamtam.ai/c/sofidy) (sofidy.com)<br>A leading independent investment manager specializing in commercial and office real estate products, managing over 87 billion euros for retail and institutional investors | Financial Services | 🇫🇷 Évry | 221 | 1987 |
| 21 | [Caf de l'Essonne](https://www.tamtam.ai/c/caf-de-l-essonne) (lasecurecrute.fr)<br>Provides family support through social benefits, personalized assistance, and funding social policies to enhance well-being in Essonne. | Government Administration | 🇫🇷 Évry | 210 | 1945 |
| 22 | [SECURITE PRIVEE](https://www.tamtam.ai/c/securite-privee)<br>SARL JB SURVEGARDE SECURIT PRIVEE provides high-quality security services with experienced agents to protect your assets, properties, and yourself | Security and Investigations | 🇫🇷 Évry | 186 | 2009 |
| 23 | [AFI Assurances - Meilleurtaux Santé](https://www.tamtam.ai/c/afi-assurances-meilleurtaux-sante) (meilleurtaux.com)<br>Specializes in remote sales of health insurance contracts, comparing partner offers to provide best, affordable coverage tailored to clients. | Insurance | 🇫🇷 Évry | 185 | 1996 |
| 24 | [IUT d'Evry Val d'Essonne](https://www.tamtam.ai/c/iut-d-evry-val-d-essonne) (iut-evry.fr)<br>Provides university-level technical education with eight specialized Bachelor programs, emphasizing professional integration and apprenticeship opportunities for students. | Higher Education | 🇫🇷 Évry | 185 | 1973 |
| 25 | [COLLEGE ALBERT CAMUS](https://www.tamtam.ai/c/college-albert-camus) (ent-liberscol.fr)<br>A higher education company located in Auxerre, France, focusing on providing educational opportunities in Bourgognefranchecomté region | Higher Education | 🇫🇷 Auxerre | 180 |  |
| 26 | [Ville de Sens](https://www.tamtam.ai/c/ville-de-sens) (ville-sens.fr)<br>A major economic and heritage center in northern Bourgogne-Franche-Comté, serving Sens and the Grand Sénonais community near Paris. | Government Administration | 🇫🇷 Sens | 145 |  |
| 27 | [Yposkesi, an SK pharmteco company](https://www.tamtam.ai/c/yposkesi-an-sk-pharmteco-company) (skpharmteco.com)<br>Yposkesi is a leading CDMO in Europe specializing in gene therapy viral vector manufacturing for ATMPs, with a focus on innovation and quality | Biotechnology Research | 🇫🇷 Évry | 137 | 2016 |
| 28 | [Hörmann France](https://www.tamtam.ai/c/hormann-france) (hormann.fr)<br>Manufacture and distribution of a wide range of doors and complete door systems for residential and industrial applications worldwide. | Wholesale Building Materials | 🇫🇷 Gron | 134 | 1991 |
| 29 | [IRFASE, Institut de Recherche et de Formation](https://www.tamtam.ai/c/irfase-institut-de-recherche-et-de-formation) (irfase.fr)<br>For 30 years, IRFASE has been training over 700 students annually in social work, offering tailored courses for social intervention professionals, and receiving recognition for innovation | Higher Education | 🇫🇷 Évry | 123 |  |
| 30 | [LA CLINIQUE DU MOUSSEAU](https://www.tamtam.ai/c/la-clinique-du-mousseau) (clinique-du-mousseau-evry.ramsaysante.fr)<br>Provides medical, surgical, and obstetric care, including a dialysis center and emergency services, located south of Paris. | Hospitals and Health Care | 🇫🇷 Évry | 117 | 1970 |
| 31 | [Texcell](https://www.tamtam.ai/c/texcell) (texcell.com)<br>Texcell provides comprehensive support for biotech and pharma companies, offering services in virology, immunology, analytical labs, viral safety testing, and GMP cell banking | Pharmaceutical Manufacturing | 🇫🇷 Évry | 107 | 2003 |
| 32 | [Genopole](https://www.tamtam.ai/c/genopole) (genopole.fr)<br>The company specializes in developing a research campus, supporting biotech startups, and creating a biopark in collaboration with a university | Biotechnology Research | 🇫🇷 Évry | 105 | 1998 |
| 33 | [DYNAPLAST](https://www.tamtam.ai/c/dynaplast) (groupeguillin.fr)<br>Innovative packaging solutions for the food industry in Europe, specializing in transparent cake, pastry, and catering containers for supermarkets and hypermarkets | Packaging and Containers Manufacturing | 🇫🇷 Saint-Florentin | 103 | 1969 |
| 34 | [Elite Restauration](https://www.tamtam.ai/c/elite-restauration) (elite-restauration.fr)<br>provides collective catering solutions for health, social care, education, and corporate sectors with professional chefs and support services | Food and Beverage Services | 🇫🇷 Joigny | 103 | 1995 |
| 35 | [SOLOMAT LOCATION](https://www.tamtam.ai/c/solomat-location) (mysolomat.fr)<br>Supplier of business supplies and equipment located in Burgundy, France, providing essential products for various business needs and operations. | Equipment Rental Services | 🇫🇷 Étigny | 101 | 1980 |
| 36 | [Sodiva](https://www.tamtam.ai/c/sodiva) (concessionnaire.renault.fr)<br>Automotive dealership offering new Renault, Dacia, and Renault Utilitaires vehicles, as well as a wide selection of pre-owned cars Financing options available | Retail | 🇫🇷 Auxerre | 100 | 1985 |
| 37 | [LEBHAR](https://www.tamtam.ai/c/lebhar) (lebhar.com)<br>A French company specializes in manufacturing food packaging for bakers, pastry chefs, chocolatiers, and other food service professionals | Packaging and Containers Manufacturing | 🇫🇷 Gron | 98 | 1921 |
| 38 | [SV-PRO](https://www.tamtam.ai/c/sv-pro) (sv-pro.com)<br>Dealership specializing in John Deere tractors and agricultural machinery, distributing multiple brands across several French regions with extensive service network. | Farming | 🇫🇷 Monéteau | 96 | 1962 |
| 39 | [JOVID'OR](https://www.tamtam.ai/c/jovid-or)<br>Specializing in bakery and pastry production for major food retailers, located in Joigny, France Expanding with new production line and seeking new team members | Food and Beverage Manufacturing | 🇫🇷 Joigny | 93 | 1993 |
| 40 | [AVEM RETAIL](https://www.tamtam.ai/c/avem-retail) (avem-groupe.com)<br>AVEM RETAIL facilitates payment processes and equipment for retail stores, offering integration, deployment, and maintenance services with a team of experts | IT System Operations and Maintenance | 🇫🇷 Fouchères | 90 | 1997 |
| 41 | [CCI Yonne](https://www.tamtam.ai/c/cci-yonne) (cci89.fr)<br>Represents and supports local businesses through training, economic studies, infrastructure planning, and providing resources across multiple sectors and locations. | Government Administration | 🇫🇷 Auxerre | 88 | 1886 |
| 42 | [ULMANN](https://www.tamtam.ai/c/ulmann) (ulmann.com)<br>Established in 1873, a leading distributor of school supplies with a wide catalog Also specializing in interactive screens, acoustic solutions, and customizable office layouts | Manufacturing | 🇫🇷 Saint-Valérien | 84 | 1873 |
| 43 | [FIMM](https://www.tamtam.ai/c/fimm) (fimm.fr)<br>Design and manufacture of ergonomic handling solutions including trolleys, carts, workshop cabinets, stepladders, bottle dollies, and trailers. | Machinery Manufacturing | 🇫🇷 Joigny | 82 | 1956 |
| 44 | [PNEU LAURENT](https://www.tamtam.ai/c/pneu-laurent) (laurentretread.com)<br>European leader in heavy truck tire retreading, manufacturing premolded tread bands and offering products for civil engineering vehicles. | Motor Vehicle Manufacturing | 🇫🇷 Avallon | 80 | 1952 |
| 45 | [Aluminium France Extrusion](https://www.tamtam.ai/c/aluminium-france-extrusion) (afextrusion.com)<br>Design and extrusion of custom aluminium profiles for building, transport, automotive, and industrial sectors at two European production sites. | Mining | 🇫🇷 Saint-Florentin | 78 | 2013 |
| 46 | [Pôle Formation 58-89](https://www.tamtam.ai/c/pole-formation-58-89) (pole-formation.net)<br>Provides vocational training and support to young people, employees, and job seekers, aligning skills with industry needs and innovations. | Professional Training and Coaching | 🇫🇷 Auxerre | 76 |  |
| 47 | [110 BOURGOGNE - Coopérative agricole](https://www.tamtam.ai/c/110-bourgogne-cooperative-agricole) (110bourgogne.fr)<br>Cooperative group organizing and supporting agricultural production of crops and livestock, focusing on equity, transparency, and regional value addition. | Farming | 🇫🇷 Monéteau | 76 | 1990 |
| 48 | [Guernet](https://www.tamtam.ai/c/guernet) (guernet.com)<br>Design and distribution of compressed air equipment, garage tools, mobile installations, and intervention vehicles with customer-focused technical support. | Machinery Manufacturing | 🇫🇷 Joigny | 69 | 1911 |
| 49 | [Festins](https://www.tamtam.ai/c/festins) (festins.fr)<br>Specializes in custom event catering and reception organization, offering tailored meal trays available for online ordering through their website. | Events Services | 🇫🇷 Chemilly-sur-Yonne | 69 | 1992 |
| 50 | [Abolis Biotechnologies](https://www.tamtam.ai/c/abolis-biotechnologies) (abolis.fr)<br>Develops tailor-made industrial solutions using microorganisms for various sectors, addressing challenges like renewable resources, supply chain security, and emissions reduction. | Biotechnology Research | 🇫🇷 Évry | 66 | 2014 |

## 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 Yonne department

- [Companies with in-house R&D in the Yonne department](https://www.tamtam.ai/l/r-and-d-companies-yonne) (31)
- [Manufacturers in the Yonne department](https://www.tamtam.ai/l/manufacturers-yonne) (27)

## The same list elsewhere in France

- [The largest companies in France](https://www.tamtam.ai/l/largest-companies-france) (90,813)
- [The largest companies in Île-de-France](https://www.tamtam.ai/l/largest-companies-ile-de-france) (36,143)
- [The largest companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/largest-companies-auvergne-rhone-alpes) (11,033)
- [The largest companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/largest-companies-provence-alpes-cote-dazur) (6,699)
- [The largest companies in Occitanie](https://www.tamtam.ai/l/largest-companies-occitanie) (5,769)
- [The largest companies in Grand Est](https://www.tamtam.ai/l/largest-companies-grand-est) (5,700)
- [The largest companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/largest-companies-nouvelle-aquitaine) (5,460)
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [The largest companies in the Rhône department](https://www.tamtam.ai/l/largest-companies-rhone) (4,813)
- [The largest companies in Hauts-de-France](https://www.tamtam.ai/l/largest-companies-hauts-de-france) (4,505)
- [The largest companies in Pays de la Loire](https://www.tamtam.ai/l/largest-companies-pays-de-la-loire) (4,269)
- [The largest companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/largest-companies-bouches-du-rhone) (3,318)
- [The largest companies in Brittany](https://www.tamtam.ai/l/largest-companies-brittany) (3,058)
- [The largest companies in the Nord department](https://www.tamtam.ai/l/largest-companies-nord) (2,806)
- [The largest companies in the Gironde department](https://www.tamtam.ai/l/largest-companies-gironde) (2,435)
- [The largest companies in the Haute-Garonne department](https://www.tamtam.ai/l/largest-companies-haute-garonne) (2,406)
- [The largest companies in Normandy](https://www.tamtam.ai/l/largest-companies-normandy) (2,380)
- [The largest companies in the Loire-Atlantique department](https://www.tamtam.ai/l/largest-companies-loire-atlantique) (2,046)
- [The largest companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/largest-companies-bourgogne-franche-comte) (1,867)
- [The largest companies in Centre-Val de Loire](https://www.tamtam.ai/l/largest-companies-centre-val-de-loire) (1,701)
- [The largest companies in the Alpes-Maritimes department](https://www.tamtam.ai/l/largest-companies-alpes-maritimes) (1,538)
- [The largest companies in Paris](https://www.tamtam.ai/l/largest-companies-paris) (22,790)
- [The largest companies in Lyon](https://www.tamtam.ai/l/largest-companies-lyon) (2,679)
- [The largest companies in Toulouse](https://www.tamtam.ai/l/largest-companies-toulouse) (1,565)

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Source: https://www.tamtam.ai/l/largest-companies-yonne