# The 100 largest companies in the Seine-et-Marne department

Tamtam tracks 947 companies headquartered in the Seine-et-Marne department. This list ranks the 100 largest by number of employees on LinkedIn, led by iad France, Levis’Store and BUT. Their median headcount is 260. Half of them were founded in 1984 or later. The most common headquarters are Champs-sur-Marne (9), Melun (8) and Chelles (5).

The largest companies in Seine-et-Marne operate in diverse sectors, with a notable presence in retail, logistics, and public services. Firms like BUT, a home equipment retailer, and Levis’Store, a general retail business, represent the consumer goods market. SeD specializes in transport and logistics, while Picard Surgelés is active in food and beverage manufacturing. Public entities such as Université Gustave Eiffel and Département de Seine et Marne also feature prominently among the largest employers. These organizations are primarily mid-sized to large firms, with a mix of established companies and some more recently founded institutions.

A recurring pattern in this selection is the significant number of companies involved in public service and administration, including higher education. Université Gustave Eiffel and École nationale des ponts et chaussées are key educational institutions, while Département de Seine et Marne and UGAP are involved in government administration and public procurement. This suggests a strong public sector employment base within the department, alongside significant private sector activity in retail and logistics.

🇫🇷 Seine-et-Marne · 100 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [iad France](https://www.tamtam.ai/c/iad-france) (join-iad.com)<br>A leading independent real estate advisor network in Europe, supporting individuals in buying, selling, or renting properties with innovative solutions. | Real Estate | 🇫🇷 Lieusaint | 11,001 | 2008 |
| 2 | [Levis’Store](https://www.tamtam.ai/c/levis-store)<br>Based in Serris, France, this company operates as a retail business, selling various products directly to consumers from its physical location. | Retail | 🇫🇷 Serris | 6,090 |  |
| 3 | [BUT](https://www.tamtam.ai/c/but) (but.fr)<br>First home equipment retailer in France with 340 stores, offering furniture, decoration, and appliances to meet diverse customer needs and budgets. | Retail | 🇫🇷 Emerainville | 5,830 | 1972 |
| 4 | [SeD](https://www.tamtam.ai/c/sed) (sed.fr)<br>It specializes in transport and logistics, offering innovative supply chain solutions with a strong focus on environmental responsibility and customer needs. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Le Mesnil-Amelot | 4,017 | 1971 |
| 5 | [Picard Surgelés](https://www.tamtam.ai/c/picard-surgeles) (picard.fr)<br>At our company, every day is a new opportunity to delight and indulge We support growth, trust, and innovation with a focus on respect for others and the environment | Food and Beverage Manufacturing | 🇫🇷 Fontainebleau | 3,906 | 1973 |
| 6 | [TSO](https://www.tamtam.ai/c/tso-chelles) (tso.fr)<br>Specializing in rail construction, maintenance, electrification, software development, safety, and rolling stock services, the company offers comprehensive solutions for complex projects | Rail Transportation | 🇫🇷 Chelles | 2,494 | 1927 |
| 7 | [Université Gustave Eiffel](https://www.tamtam.ai/c/universite-gustave-eiffel) (univ-gustave-eiffel.fr)<br>Combines research, university, architecture school, and engineering schools to provide diverse education and scientific insights for all levels. | Higher Education | 🇫🇷 Champs-sur-Marne | 2,225 | 2020 |
| 8 | [COS CRPF](https://www.tamtam.ai/c/cos-crpf) (cosformation.fr)<br>The company is a medical-social establishment that helps disabled individuals with professional retraining, offering comprehensive support and training services for all | Professional Training and Coaching | 🇫🇷 Nanteau-sur-Lunain | 2,071 | 1951 |
| 9 | [Département de Seine et Marne](https://www.tamtam.ai/c/departement-de-seine-et-marne) (seine-et-marne.fr)<br>Provides diverse public services, including social action, territorial development, culture, youth, and education, to residents, focusing on quality and employee well-being. | Government Administration | 🇫🇷 Melun | 1,531 |  |
| 10 | [UGAP](https://www.tamtam.ai/c/ugap) (ugap.fr)<br>A French public commercial entity founded in 1985, serving various sectors by acting as the sole general public procurement center in France | Government Administration | 🇫🇷 Champs-sur-Marne | 1,363 |  |
| 11 | [Jeff de Bruges](https://www.tamtam.ai/c/jeff-de-bruges) (jeff-de-bruges.com)<br>French brand. Premium accessible chocolate. Franchise network. Leader in chocolate market. Over 500 stores worldwide. | Retail | 🇫🇷 Ferrières-en-Brie | 1,224 | 1986 |
| 12 | [École nationale des ponts et chaussées](https://www.tamtam.ai/c/ecole-nationale-des-ponts-et-chaussees) (ecoledesponts.fr)<br>Engineering school providing multidisciplinary training and advanced research in engineering, economics, and digital and ecological transitions. | Higher Education | 🇫🇷 Champs-sur-Marne | 1,126 | 1747 |
| 13 | [Grand Hôpital de l'Est Francilien](https://www.tamtam.ai/c/grand-hopital-de-l-est-francilien) (ghef.fr)<br>Integrated hospital network providing extensive medical and psychiatric care across multiple sites, serving the northern Seine-et-Marne population. | Government Administration | 🇫🇷 Meaux | 904 | 2017 |
| 14 | [SDIS 77 - Sapeurs-pompiers de Seine-et-Marne](https://www.tamtam.ai/c/sdis-77-sapeurs-pompiers-de-seine-et-marne) (sdis77.fr)<br>A public establishment in Seine-et-Marne focused on preventing, protecting, and fighting fires, as well as providing emergency response in the region | Public Safety | 🇫🇷 Melun | 862 | 1934 |
| 15 | [ACORUS](https://www.tamtam.ai/c/acorus) (groupe-acorus.fr)<br>Specialist in renovation services with 5 key areas: rehabilitation, home maintenance, repairs, maintenance, and accessibility, focusing on growth, acquisitions, and expanding services | Construction | 🇫🇷 Croissy-Beaubourg | 829 | 1996 |
| 16 | [Toyota Material Handling France](https://www.tamtam.ai/c/toyota-material-handling-france) (toyota-forklifts.fr)<br>French subsidiary of a global leader in material handling solutions, offering a commercial network for integrated agencies and partner dealerships nationwide. | Industrial Machinery Manufacturing | 🇫🇷 Bussy Saint Georges | 792 | 2013 |
| 17 | [STILL France](https://www.tamtam.ai/c/still-france) (still.fr)<br>Provides tailor-made intralogistics solutions, including material handling equipment, software, and services. Focuses on electric, zero-emission solutions to reduce carbon footprint and energy costs. | Industrial Machinery Manufacturing | 🇫🇷 Jossigny | 710 | 1920 |
| 18 | [ACRELEC](https://www.tamtam.ai/c/acrelec) (acrelec.com)<br>Global technology company transforming customer experiences for restaurants and retail brands through innovative platforms that enhance engagement, efficiency, and operations globally | IT Services and IT Consulting | 🇫🇷 Saint Thibault des Vignes | 689 | 2004 |
| 19 | [CASDEN Banque Populaire](https://www.tamtam.ai/c/casden-banque-populaire) (casden.fr)<br>The company is a cooperative bank serving the public sector, offering savings, loans, and insurance with a focus on social values and partnerships | Banking | 🇫🇷 Champs-sur-Marne | 642 | 1951 |
| 20 | [NHC](https://www.tamtam.ai/c/nhc) (nhc.care)<br>With over 20 years of experience in home healthcare, the company provides a range of services including artificial nutrition, diabetes, and Parkinson's treatment | Home Health Care Services | 🇫🇷 Émerainville | 637 | 2000 |
| 21 | [CELESTE](https://www.tamtam.ai/c/celeste-champs-sur-marne) (celeste.fr)<br>A national provider of internet access and connectivity solutions for businesses, offering innovative, high-availability, and eco-friendly services such as fiber optic connections and cloud hosting | Telecommunications | 🇫🇷 Champs-sur-Marne | 537 | 2001 |
| 22 | [Université Paris-Est Marne-la-Vallée](https://www.tamtam.ai/c/universite-paris-est-marne-la-vallee) (univ-gustave-eiffel.fr)<br>Public university focused on innovation, research, and education, collaborating closely with economic sectors and practicing unique governance models. | Research Services | 🇫🇷 Champs-sur-Marne | 519 | 1991 |
| 23 | [Fives Maintenance](https://www.tamtam.ai/c/fives-maintenance) (fivesgroup.com)<br>Specializing in industrial maintenance for over twenty years, offering tailored solutions to ensure high availability of production facilities with a focus on safety and environmental responsibility | Commercial and Industrial Machinery Maintenance | 🇫🇷 Montévrain | 495 | 1997 |
| 24 | [ADSEA77](https://www.tamtam.ai/c/adsea77) (adsea77.fr)<br>An educational and social association providing protection, support, prevention, inclusion, and rehabilitation to children, adolescents, and adults with disabilities or in difficulty | Civic and Social Organizations | 🇫🇷 Melun | 490 | 1944 |
| 25 | [Equalis](https://www.tamtam.ai/c/equalis) (equalis.org)<br>A 1901 association advocating for social justice, providing comprehensive support to marginalized populations through various services, impacting over 11,000 individuals annually | Civic and Social Organizations | 🇫🇷 Mareuil-lès-Meaux | 429 | 1978 |
| 26 | [TD SYNNEX France](https://www.tamtam.ai/c/td-synnex-france) (tdsynnex.com)<br>Leading global distributor aggregating IT solutions from 1,500 vendors to provide cloud, cybersecurity, big data, AI, and IoT products to technology ecosystem customers. | IT Services and IT Consulting | 🇫🇷 Bussy-Saint-Georges | 425 |  |
| 27 | [TSO CATENAIRES](https://www.tamtam.ai/c/tso-catenaires) (tso.fr)<br>Specializes in designing, installing, and maintaining electrification and power supply systems essential for sustainable railway infrastructure projects worldwide. | Rail Transportation | 🇫🇷 Chelles | 403 |  |
| 28 | [GDV](https://www.tamtam.ai/c/gdv) (gdv.fr)<br>Distribution of intercom and access control systems, electrical equipment supplier, national agency network, technical support, customer satisfaction focus. | Wholesale | 🇫🇷 Croissy-Beaubourg | 382 | 1981 |
| 29 | [ELCIMAÏ](https://www.tamtam.ai/c/elcimai) (elcimai.com)<br>A French holding specializing in building and process engineering, logistics consulting, and IT engineering, with subsidiaries catering to various industries | Engineering Services | 🇫🇷 Melun | 378 | 1992 |
| 30 | [Maisons Pierre](https://www.tamtam.ai/c/maisons-pierre) (maisons-pierre.com)<br>Support families in building quality, energy-efficient individual homes with excellent value, guiding through every step of the construction process. | Construction | 🇫🇷 Vert-Saint-Denis | 370 | 1984 |
| 31 | [Nc](https://www.tamtam.ai/c/nc-villenoy) (nova-crete.com)<br>Specializing in decorative concrete, this team is dedicated to creating high-quality products, investing in research and development for innovative solutions, and providing support for interior and exterior projects | Wholesale Building Materials | 🇫🇷 Villenoy | 362 | 2020 |
| 32 | [INSEAD Executive Education](https://www.tamtam.ai/c/insead-executive-education) (insead.edu)<br>A global leader in executive education, offering innovative learning experiences, digital transformation, and informed global perspectives to support career growth | Education Administration Programs | 🇫🇷 Fontainebleau | 358 |  |
| 33 | [Numericable](https://www.tamtam.ai/c/numericable) (numericable.fr)<br>Leading French cable operator offering modular TV, internet, phone, and mobile services to 98 million households, with extensive coverage and high-speed fiber options | Telecommunications | 🇫🇷 Champs-sur-Marne | 354 | 2007 |
| 34 | [Centre hospitalier du Sud Seine-et-Marne](https://www.tamtam.ai/c/centre-hospitalier-du-sud-seine-et-marne) (ch-sud-seine-et-marne.fr)<br>Groups hospitals in Fontainebleau, Montereau-Fault-Yonne, and Nemours, resulting from a shared medical project to provide healthcare services in the region. | Hospitals and Health Care | 🇫🇷 Fontainebleau | 332 | 2017 |
| 35 | [ENCRES DUBUIT](https://www.tamtam.ai/c/encres-dubuit) (encresdubuit.com)<br>Development and manufacturing of specialized inks for electronics, packaging, automotive, and industrial applications with environmental responsibility and innovation focus. | Chemical Manufacturing | 🇫🇷 Mitry-Mory | 330 | 1954 |
| 36 | [Fondation Ellen Poidatz](https://www.tamtam.ai/c/fondation-ellen-poidatz) (fondationpoidatz.com)<br>Management of pediatric rehabilitation centers, support for disabled children and adults, adapted schooling, and research in healthcare innovation. | Hospitals and Health Care | 🇫🇷 Chailly-en-Bière | 329 | 1919 |
| 37 | [Eléphant Vert](https://www.tamtam.ai/c/elephant-vert) (elephant-vert.com)<br>Develops and provides sustainable agricultural solutions, partnering with farmers to improve crop quality and harvest sustainability through innovative approaches. | Farming | 🇫🇷 Serris | 329 | 2012 |
| 38 | [Crowe Fideliance](https://www.tamtam.ai/c/crowe-fideliance) (fideliance.fr)<br>Accounting firm offering audit, consulting, wealth management, legal advice, financial reporting, social management, CSR, and digital services across multiple French locations. | Financial Services | 🇫🇷 Fontainebleau | 318 | 1978 |
| 39 | [BURTON](https://www.tamtam.ai/c/burton) (burton.fr)<br>A French retailer specializing in classic, elegant, and timeless men's fashion, focusing on tailoring, French flair, eco-responsibility, and collaborations with trendy brands | Retail Apparel and Fashion | 🇫🇷 Lognes | 314 | 1900 |
| 40 | [AEDE - ASSOCIATION](https://www.tamtam.ai/c/aede-association) (aede.fr)<br>A 1901 non-profit medical-social association offering support to over 1500 vulnerable individuals of all ages, including those with various disabilities | Civic and Social Organizations | 🇫🇷 Hautefeuille | 306 | 1954 |
| 41 | [Mairie de Meaux](https://www.tamtam.ai/c/mairie-de-meaux) (ville-meaux.fr)<br>Manage urban development, enhance public safety with advanced surveillance, promote community events, and support demographic growth near Paris. | Government Administration | 🇫🇷 Meaux | 291 |  |
| 42 | [Groupe Delisle](https://www.tamtam.ai/c/groupe-delisle) (delisle-sa.com)<br>With over 40 years of experience, this company offers transport, storage, and washing services while prioritizing values, quality, and customer relationships | Truck Transportation | 🇫🇷 La Ferté-Gaucher | 285 | 1977 |
| 43 | [FÖRCH France](https://www.tamtam.ai/c/forch-france) (forch.fr)<br>Distribution of consumables and fixings for automotive and building professionals, offering quality products, personalized service, and strong client partnerships. | Wholesale | 🇫🇷 Montereau-sur-le-Jard | 282 | 1999 |
| 44 | [.](https://www.tamtam.ai/c/company-savigny-le-temple) (fareva.com)<br>A global leader in outsourcing for industrial, household, cosmetic, and pharmaceutical sectors, with over 9,500 employees and 38 production sites worldwide Specializes in product development and manufacturing | Personal Care Product Manufacturing | 🇫🇷 Savigny-le-Temple | 281 |  |
| 45 | [HOPITAL FORCILLES - Fondation Cognacq-Jay](https://www.tamtam.ai/c/hopital-forcilles-fondation-cognacq-jay) (hopital-forcilles.cognacq-jay.fr)<br>The company provides rehabilitation for patients with chronic diseases, cancer treatment expertise, and medical consultations for locals in Seine-et-Marne | Hospitals and Health Care | 🇫🇷 Férolles-Attilly | 278 | 1964 |
| 46 | [SODIS - Groupe MADRIGALL](https://www.tamtam.ai/c/sodis-groupe-madrigall) (sodis.fr)<br>Management of distribution for 530 publishing brands, handling order flow, invoicing, and dispute resolution for 12,000 active clients. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Lagny-sur-Marne | 277 | 1971 |
| 47 | [Ville de Pontault-Combault](https://www.tamtam.ai/c/ville-de-pontault-combault) (pontault-combault.fr)<br>Local government providing recreational facilities, sports programs, natural spaces, cultural events, and citizen participation initiatives for community well-being. | Government Administration | 🇫🇷 Pontault-Combault | 275 |  |
| 48 | [EOGN - École des officiers de la gendarmerie nationale](https://www.tamtam.ai/c/eogn-ecole-des-officiers-de-la-gendarmerie-nationale) (gendarmerie.interieur.gouv.fr)<br>Academy trains officers for the French Gendarmerie Nationale since 1918, offering modern pedagogical methods, high-level instruction, and professional expertise for future leaders. | Higher Education | 🇫🇷 Melun | 270 | 1918 |
| 49 | [KLUBB GROUP](https://www.tamtam.ai/c/klubb-group) (klubb.com)<br>Designs and converts professional vehicles into business solutions for aerial work platforms, refueling, and roadside assistance, focusing on innovation and sustainability. | Industrial Machinery Manufacturing | 🇫🇷 Ferrières-en-Brie | 265 |  |
| 50 | [HMI](https://www.tamtam.ai/c/hmi) (hmi.fr)<br>Providing complete professional kitchen equipment and services including cooking, refrigeration, dishwashing, and distribution for chefs and restaurant managers. | Machinery Manufacturing | 🇫🇷 Mitry-Mory | 260 |  |
| 51 | [Groupe Hospitalier Sud Ile-de-France](https://www.tamtam.ai/c/groupe-hospitalier-sud-ile-de-france) (ghsif.fr)<br>Leading public healthcare group in Southern Seine-et-Marne, France, comprised of hospitals, health facilities, and a shared direction with a gerontology establishment | Medical Practices | 🇫🇷 Melun | 259 |  |
| 52 | [houra.fr](https://www.tamtam.ai/c/houra-fr) (houra.fr)<br>A grocery delivery service offering a wide range of products, including over 4000 organic items, with real-time delivery tracking and flexible delivery options | Retail | 🇫🇷 Bussy-Saint-Georges | 251 | 2000 |
| 53 | [SNIE (Société Nouvelle d'Installations Électriques)](https://www.tamtam.ai/c/snie-societe-nouvelle-d-installations-electriques) (snie.fr)<br>An electrical installation company founded in 1966 specializing in new housing and commercial buildings, emphasizing quality, innovation, sustainability, and employee well-being | Construction | 🇫🇷 Brie-Comte-Robert | 244 | 1966 |
| 54 | [De Neuville - Groupe Savencia](https://www.tamtam.ai/c/de-neuville-groupe-savencia) (chocolat-deneuville.com)<br>Offers French-made chocolates, without palm oil, with good value for money, through a network of franchised stores and online sales. | Retail | 🇫🇷 Noisiel | 240 | 1986 |
| 55 | [Avenir Rénovations](https://www.tamtam.ai/c/avenir-renovations) (avenir-renovations.fr)<br>Specializes in interior and exterior renovations, remodeling, construction, and window replacement for homes and professional spaces across France. | Construction | 🇫🇷 Collégien | 231 | 2013 |
| 56 | [Distritec](https://www.tamtam.ai/c/distritec) (dgroupe.fr)<br>Provider of value-added transportation and logistics solutions | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Émerainville | 220 | 2006 |
| 57 | [Gravity Media France](https://www.tamtam.ai/c/gravity-media-france) (gravitymedia.com)<br>Providing over 1500 broadcast events annually, specializing in major sports and entertainment shows worldwide with reliable connectivity solutions. | Media Production | 🇫🇷 Bussy-Saint-Martin | 213 | 1975 |
| 58 | [Association des Guides et Scouts d'Europe - France](https://www.tamtam.ai/c/association-des-guides-et-scouts-d-europe-france) (scouts-europe.org)<br>A Catholic education movement focusing on scouting, promoting unity across Europe through summer camps and youth development programs | Civic and Social Organizations | 🇫🇷 La Madeleine-sur-Loing | 207 | 1958 |
| 59 | [Association ARILE](https://www.tamtam.ai/c/association-arile) (asso-arile.com)<br>The company is a multi-location association offering housing, social reintegration programs, vocational training, and justice support for individuals in need | Civic and Social Organizations | 🇫🇷 Meaux | 199 | 2017 |
| 60 | [Ville de Savigny-le-Temple](https://www.tamtam.ai/c/ville-de-savigny-le-temple) (savigny-le-temple.fr)<br>Provides updates on local economic activity, commercial dynamism, and major urban projects shaping the community and city development. | Government Administration | 🇫🇷 Savigny-le-Temple | 196 |  |
| 61 | [Ville de CHELLES](https://www.tamtam.ai/c/ville-de-chelles) (chelles.fr)<br>Local government providing municipal services, environmental management, community information, and employment opportunities within a growing urban area near Paris. | Government Administration | 🇫🇷 Chelles | 194 |  |
| 62 | [Les Bruyères Association](https://www.tamtam.ai/c/les-bruyeres-association) (asso-lesbruyeres.com)<br>Providing innovative, personalized housing solutions and services for elderly people, focusing on quality, inclusivity, and collaborative care management. | Individual and Family Services | 🇫🇷 Melun | 188 | 1994 |
| 63 | [Association Empreintes](https://www.tamtam.ai/c/association-empreintes) (asso-empreintes.fr)<br>Empreintes is an association that promotes the inclusion of vulnerable individuals by providing them with accommodation, support, and empowerment without discrimination | Civic and Social Organizations | 🇫🇷 Lognes | 181 | 2015 |
| 64 | [SCADIF](https://www.tamtam.ai/c/scadif)<br>A regional logistics center established in 1992, employing over 400 workers and supplying nearly 60 E LECLERC stores annually in Seine et Marne | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Réau | 181 | 1992 |
| 65 | [ENSA Paris-Est](https://www.tamtam.ai/c/ensa-paris-est) (paris-est.archi.fr)<br>It focuses on innovative architectural education, emphasizing environmental transformation and urban issues, preparing students for contemporary architectural practices. | Higher Education | 🇫🇷 Champs-sur-Marne | 176 | 1998 |
| 66 | [French Canoe Federation (FFCK)](https://www.tamtam.ai/c/french-canoe-federation-ffck) (ffck.org)<br>Development of canoeing and kayaking sports in France, including Olympic competition, leisure activities, and education across various water environments. | Spectator Sports | 🇫🇷 Vaires-sur-Marne | 175 | 1931 |
| 67 | [Techtronic Industries France - TTI](https://www.tamtam.ai/c/techtronic-industries-france-tti) (ttigroup.com)<br>A global leader in power tools, accessories, outdoor equipment, and floor care, serving professionals and DIY enthusiasts with premium brands | Manufacturing | 🇫🇷 Le Mesnil-Amelot | 173 | 1989 |
| 68 | [HOBART France](https://www.tamtam.ai/c/hobart-france) (hobart.fr)<br>Providing personalized equipment solutions with integrated sales, installation, and maintenance services through a dedicated network of 340 employees across France. | Machinery Manufacturing | 🇫🇷 Croissy-Beaubourg | 172 | 1921 |
| 69 | [ECT](https://www.tamtam.ai/c/ect) (groupe-ect.com)<br>Transformation of abandoned sites and inert excavated soils into landscaped parks, urban farms, and renewable energy projects supporting local communities. | Environmental Services | 🇫🇷 Villeneuve-sous-Dammartin | 171 | 1998 |
| 70 | [STPS](https://www.tamtam.ai/c/stps)<br>Specializing in public works, our company focuses on transporting and distributing electricity and gas to meet the needs of our customers | Civil Engineering | 🇫🇷 Villeparisis | 171 |  |
| 71 | [IUT Sénart Fontainebleau](https://www.tamtam.ai/c/iut-senart-fontainebleau) (iutsf.u-pec.fr)<br>The company in Seine-et-Marne offers a wide range of educational programs, from Bachelors to Masters, in various fields with modern facilities for optimal learning conditions | Higher Education | 🇫🇷 Lieusaint | 170 | 1998 |
| 72 | [Foyer de l'enfance de Meaux](https://www.tamtam.ai/c/foyer-de-l-enfance-de-meaux) (facebook.com)<br>The company provides emergency care and protection for minors in danger, offering 74 places for children aged 0 to 18 in a multidisciplinary setting | Government Administration | 🇫🇷 Meaux | 168 | 1992 |
| 73 | [ALFYMA](https://www.tamtam.ai/c/alfyma) (alfyma.fr)<br>National conveyor belt maintenance, waste treatment plant construction, airport baggage and logistics system automation, plus 24/7 maintenance contracts. | International Trade and Development | 🇫🇷 Bailly-Romainvilliers | 170 | 1974 |
| 74 | [FRISQUET S.A.](https://www.tamtam.ai/c/frisquet-s-a) (frisquet.com)<br>French family brand specializing in reliable gas boilers, hybrid gas-solar models, and low CO2 heat pumps for sustainable energy. | Machinery Manufacturing | 🇫🇷 Meaux | 167 | 1936 |
| 75 | [SMC France](https://www.tamtam.ai/c/smc-france) (smc.eu)<br>Manufacture and supply of pneumatic automation components including actuators, valves, connectors, air treatment, vacuum and fluid products with personalized service. | Automation Machinery Manufacturing | 🇫🇷 Bussy-Saint-Georges | 164 | 1988 |
| 76 | [Ville de Melun](https://www.tamtam.ai/c/ville-de-melun) (melun.fr)<br>Administrative center with rich heritage, natural beauty, modern infrastructure, hosting numerous institutions, businesses, and cultural facilities in a dynamic community. | Government Administration | 🇫🇷 Melun | 163 |  |
| 77 | [APF Environnement](https://www.tamtam.ai/c/apf-environnement) (apf-francehandicap.org)<br>Repair and recondition computer and medical equipment, manage electronic waste, employ mostly disabled workers, focus on environmental and social impact. | Renewable Energy Semiconductor Manufacturing | 🇫🇷 Lagny Sur Marne | 163 | 1933 |
| 78 | [SIAM](https://www.tamtam.ai/c/siam) (siam77.fr)<br>The Intercommunal Sanitation Syndicate of Marne-la-Vallée collects, transports, and treats wastewater, focusing on energy production and circular economy initiatives for environmental transition | Government Relations Services | 🇫🇷 Saint-Thibault-des-Vignes | 163 | 1974 |
| 79 | [IDK Climatisation EnR](https://www.tamtam.ai/c/idk-climatisation-enr) (idk.fr)<br>Distributor of renewable energy solutions including air conditioning, heating, heat pumps, and solar thermal products for professional installers. | Wholesale | 🇫🇷 Emerainville | 162 | 1997 |
| 80 | [JACIR](https://www.tamtam.ai/c/jacir) (jacir.fr)<br>With over 60 years of expertise, the company offers a diverse range of water cooling solutions, incorporating environmental requirements and providing dedicated services to clients worldwide | Mechanical Or Industrial Engineering | 🇫🇷 Pontault-Combault | 159 | 1959 |
| 81 | [Groupe MyMobility](https://www.tamtam.ai/c/groupe-mymobility) (mymobility.fr)<br>A leading actor in school support and on-demand mobility for individuals with disabilities, ensuring daily transportation for over 8,000 people in France | Individual and Family Services | 🇫🇷 Vert-Saint-Denis | 156 | 1998 |
| 82 | [Paris - Vallée de la Marne](https://www.tamtam.ai/c/paris-vallee-de-la-marne) (agglo-pvm.fr)<br>A dynamic community in Seine-et-Marne, focusing on balanced, sustainable development in the East Parisian and Greater Paris area for residents and businesses | Government Administration | 🇫🇷 Torcy | 154 | 2016 |
| 83 | [Center Parcs Villages Nature Paris](https://www.tamtam.ai/c/center-parcs-villages-nature-paris) (lesvillagesnature.com)<br>A sustainable and visionary tourist destination created by Euro Disney SAS and Pierre & Vacances-Center Parcs groups | Travel Arrangements | 🇫🇷 Bailly-Romainvilliers | 154 |  |
| 84 | [Legrand Data Center Solutions](https://www.tamtam.ai/c/legrand-data-center-solutions) (legrand.com)<br>Providing tailored grey and white space solutions through specialist brands, focusing on performance, reliability, scalability, and sustainability in data centers. | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Croissy-Beaubourg | 153 | 1860 |
| 85 | [B Live](https://www.tamtam.ai/c/b-live) (blivegroup.com)<br>Provider of technical services and equipment for live performances, audiovisual, events, cinema, installation, and integration with expert teams and extensive resources. | Entertainment Providers | 🇫🇷 Bussy-Saint-Georges | 151 | 2014 |
| 86 | [ONF Vegetis](https://www.tamtam.ai/c/onf-vegetis) (onf-vegetis.fr)<br>Expertise in managing and preserving urban and natural tree heritage, enhancing green spaces, and promoting sustainable environmental practices. | Landscaping Services | 🇫🇷 Nemours | 151 | 2022 |
| 87 | [BRICARD](https://www.tamtam.ai/c/bricard) (bricard.com)<br>With over two centuries of expertise in locksmithing and access control, the company offers a wide range of solutions for personal and property protection | Specialty Trade Contractors | 🇫🇷 Saint-Thibault-des-Vignes | 151 | 1782 |
| 88 | [FVF - Sécurité Ferroviaire](https://www.tamtam.ai/c/fvf-securite-ferroviaire) (tso.fr)<br>Since 2012, a company specializing in railway security works on maintenance, regeneration, and new line projects with a focus on safety for clients like SNCF | Rail Transportation | 🇫🇷 Chelles | 148 |  |
| 89 | [AS INTERNATIONAL](https://www.tamtam.ai/c/as-international) (as-inter.com)<br>A global network offering quality solutions in textile, clothing, home, and leisure industries for manufacturers, brands, and distributors through expertise and innovation | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Lieusaint | 148 | 1983 |
| 90 | [MAKITA FRANCE SAS](https://www.tamtam.ai/c/makita-france-sas) (makita.fr)<br>Designs and manufactures high-performance professional power tools for construction, crafts, industry, and landscape maintenance. Offers a wide range of machines and accessories. | Industrial Machinery Manufacturing | 🇫🇷 Bussy-Saint-Georges | 148 | 1971 |
| 91 | [Rouquette](https://www.tamtam.ai/c/rouquette) (rouquette.com)<br>A major distributor of beverages in the Île-de-France and Picardie markets, offering a diverse range of products including wines, champagnes, and spirits | Wholesale | 🇫🇷 Chelles | 147 | 1948 |
| 92 | [Château de Fontainebleau](https://www.tamtam.ai/c/chateau-de-fontainebleau) (chateaudefontainebleau.fr)<br>Preservation and exhibition of a historic royal palace with extensive art, architecture, and history spanning seven centuries. | Fine Art | 🇫🇷 Fontainebleau | 146 |  |
| 93 | [FACTORY & CO](https://www.tamtam.ai/c/factory-and-co) (factoryandco.com)<br>Specializes in original burgers, bagels, and New York-style cheesecakes with fresh bread and desserts made daily in-house. | Restaurants | 🇫🇷 Serris | 146 | 2009 |
| 94 | [FAAC Entrance Solutions France](https://www.tamtam.ai/c/faac-entrance-solutions-france) (faacentrancesolutions.fr)<br>Exclusive provider of ASSA ABLOY automatic sliding, swinging, and revolving doors in France | Wholesale Building Materials | 🇫🇷 Lieusaint | 145 |  |
| 95 | [EpaMarne EpaFrance](https://www.tamtam.ai/c/epamarne-epafrance) (epamarne-epafrance.fr)<br>specialized in urban development and wood construction, focusing on sustainable city planning across multiple communes in eastern Paris region | Architecture and Planning | 🇫🇷 Champs-sur-Marne | 144 | 1972 |
| 96 | [SCHILLER France](https://www.tamtam.ai/c/schiller-france) (mediprostore.com)<br>Development, production, and distribution of medical devices for cardio-pulmonary diagnosis, patient monitoring, and emergency medicine in France. | Medical Equipment Manufacturing | 🇫🇷 Bussy-Saint-Georges | 143 | 1974 |
| 97 | [CCI Seine-et-Marne](https://www.tamtam.ai/c/cci-seine-et-marne) (seineetmarne.cci.fr)<br>Support businesses of all sizes and sectors through development stages, represent interests, collaborate with government, and promote regional economic growth. | Government Administration | 🇫🇷 Serris | 143 |  |
| 98 | [OURRY](https://www.tamtam.ai/c/ourry) (ourry.fr)<br>Family-owned, independent company in environmental sector for over 40 years Provides diverse waste management services with a focus on innovation and sustainability | Waste Collection | 🇫🇷 Champdeuil | 141 | 1980 |
| 99 | [Communauté d'Agglomération Melun Val de Seine](https://www.tamtam.ai/c/communaute-d-agglomeration-melun-val-de-seine) (melunvaldeseine.fr)<br>Regional urban community managing 20 communes, focusing on sustainable development, economic growth, cultural vitality, and ecological transition. | Government Administration | 🇫🇷 Dammarie-lès-Lys | 140 | 2002 |
| 100 | [Intégral Système](https://www.tamtam.ai/c/integral-systeme) (integral-systeme.fr)<br>Provides high-tech security products and personalized technical support for building site managers and specialized installers to ensure safety. | Wholesale | 🇫🇷 Collégien | 138 | 2001 |

## 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 Seine-et-Marne department

- [Multinational companies in the Seine-et-Marne department](https://www.tamtam.ai/l/multinational-companies-seine-et-marne) (139)
- [Companies with in-house R&D in the Seine-et-Marne department](https://www.tamtam.ai/l/r-and-d-companies-seine-et-marne) (104)
- [Manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/manufacturers-seine-et-marne) (100)
- [Hardware manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/hardware-companies-seine-et-marne) (84)
- [Distributors and wholesalers in the Seine-et-Marne department](https://www.tamtam.ai/l/distributors-and-wholesalers-seine-et-marne) (82)
- [Retail chains in the Seine-et-Marne department](https://www.tamtam.ai/l/retail-chains-seine-et-marne) (68)
- [Construction companies in the Seine-et-Marne department](https://www.tamtam.ai/l/construction-companies-seine-et-marne) (57)
- [Family-owned companies in the Seine-et-Marne department](https://www.tamtam.ai/l/family-owned-companies-seine-et-marne) (49)
- [Public sector organisations in the Seine-et-Marne department](https://www.tamtam.ai/l/public-sector-organisations-seine-et-marne) (49)
- [Professional services firms in the Seine-et-Marne department](https://www.tamtam.ai/l/professional-services-firms-seine-et-marne) (41)
- [Government Administration companies in the Seine-et-Marne department](https://www.tamtam.ai/l/government-administration-companies-seine-et-marne) (39)
- [Industrial Machinery Manufacturing companies in the Seine-et-Marne department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-seine-et-marne) (34)
- [Wholesale companies in the Seine-et-Marne department](https://www.tamtam.ai/l/wholesale-companies-seine-et-marne) (34)
- [Critical infrastructure operators in the Seine-et-Marne department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-et-marne) (33)
- [Retail companies in the Seine-et-Marne department](https://www.tamtam.ai/l/retail-companies-seine-et-marne) (33)
- [Education providers in the Seine-et-Marne department](https://www.tamtam.ai/l/education-companies-seine-et-marne) (31)
- [IT Services and IT Consulting companies in the Seine-et-Marne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-seine-et-marne) (31)
- [IT services companies in the Seine-et-Marne department](https://www.tamtam.ai/l/it-services-companies-seine-et-marne) (29)
- [Contract manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/contract-manufacturers-seine-et-marne) (26)
- [Healthcare providers in the Seine-et-Marne department](https://www.tamtam.ai/l/healthcare-providers-seine-et-marne) (26)
- [Higher Education companies in the Seine-et-Marne department](https://www.tamtam.ai/l/higher-education-companies-seine-et-marne) (25)

## 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-seine-et-marne