# The 50 largest companies in the Deux-Sèvres department

Tamtam tracks 231 companies headquartered in the Deux-Sèvres department. This list ranks the 50 largest by number of employees on LinkedIn, led by MACIF, MAIF and MAAF Assurances. Their median headcount is 186. Half of them were founded in 1973 or later. The most common headquarters are Niort (23).

The largest companies in Deux-Sèvres are predominantly established mid-sized to large firms, with a strong concentration in the insurance sector. MACIF, MAIF, and MAAF Assurances are major players, providing a wide range of insurance, health, and financial services. Groupe IMA specializes in global assistance solutions, while Smacl Assurances offers tailored products for local governments and businesses. Centre hospitalier de Niort is the largest healthcare facility in the department.

A clear pattern is the dominance of Niort as a headquarters city for these significant employers. The insurance industry, often linked to mutualist models, is exceptionally well-represented, indicating a historical and ongoing specialization in this financial sector within the region.

🇫🇷 Deux-Sèvres · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [MACIF](https://www.tamtam.ai/c/macif) (macif.fr)<br>Social economy enterprise focusing on providing quality insurance, health, and finance services to 5 million members and clients, prioritizing mutual trust and development | Insurance | 🇫🇷 Niort | 8,251 | 1960 |
| 2 | [MAIF](https://www.tamtam.ai/c/maif) (maif.fr)<br>A major player in the French insurance industry, promoting an alternative economic model, innovative products, human-centric values, and recognized customer service quality Join us for success | Insurance | 🇫🇷 Niort | 7,028 | 1934 |
| 3 | [MAAF Assurances](https://www.tamtam.ai/c/maaf-assurances) (maaf.fr)<br>French mutual insurance company, offers comprehensive solutions: auto, home, professional risks, health, life, and value-added services like assistance and credit. | Insurance | 🇫🇷 Niort | 5,094 | 1950 |
| 4 | [Groupe IMA](https://www.tamtam.ai/c/groupe-ima) (ima.eu)<br>Design, assembly, and implementation of global assistance solutions in mobility, housing, health, well-being, and legal sectors, 24/7 support. | Individual and Family Services | 🇫🇷 Niort | 5,001 |  |
| 5 | [Groupama Centre-Atlantique](https://www.tamtam.ai/c/groupama-centre-atlantique) (groupama.fr)<br>An insurance company operating in France, providing services from their office in Niort, Deux Sevres | Insurance | 🇫🇷 Niort | 997 |  |
| 6 | [Smacl Assurances](https://www.tamtam.ai/c/smacl-assurances) (smacl.fr)<br>A socially responsible insurer providing tailored insurance products for local governments, associations, and businesses, founded by and for local elected officials | Insurance | 🇫🇷 Niort | 629 | 1974 |
| 7 | [Centre hospitalier de Niort](https://www.tamtam.ai/c/centre-hospitalier-de-niort) (ch-niort.fr)<br>Largest healthcare facility in Deux-Sèvres offering short, medium, long-term care and psychiatric services with extensive medical and non-medical staff. | Hospitals and Health Care | 🇫🇷 Niort | 566 | 1665 |
| 8 | [Macif Santé Prévoyance](https://www.tamtam.ai/c/macif-sante-prevoyance) (macif.fr)<br>Provides health and insurance contracts for individuals, professionals, and businesses, protecting over 1.8 million members with innovative services. | Insurance Carriers | 🇫🇷 Niort | 550 | 1960 |
| 9 | [Mairie de Niort](https://www.tamtam.ai/c/mairie-de-niort) (vivre-a-niort.com)<br>The company is located in Niort, a strategic city in western France known for its strong presence in the insurance and service industry | Government Administration | 🇫🇷 Niort | 420 |  |
| 10 | [DEPARTEMENT DES DEUX SEVRES](https://www.tamtam.ai/c/departement-des-deux-sevres) (deux-sevres.fr)<br>Local government administration providing public services and managing regional affairs in the Deux Sevres area, based in Madrid, Spain. | Government Administration | 🇫🇷 Niort | 395 |  |
| 11 | [illiCO travaux](https://www.tamtam.ai/c/illico-travaux) (illico-travaux.com)<br>Connecting homeowners with trusted artisans for renovation, extension, and remodeling projects, providing full project support and fair pricing. | Facilities Services | 🇫🇷 Chauray | 390 | 2000 |
| 12 | [DEYA](https://www.tamtam.ai/c/deya-la-creche) (deya-pro.com)<br>Design, manufacture, and market a wide range of second-œuvre building products including door blocks, scaffolding platforms, and closet doors with French production and environmental focus. | Wholesale Building Materials | 🇫🇷 La Crèche | 363 | 1953 |
| 13 | [Adapei 79](https://www.tamtam.ai/c/adapei-79) (adapei79.org)<br>Support and advocate for intellectually disabled individuals, manage medical-social establishments, and assist families in Deux-Sèvres region. | Mental Health Care | 🇫🇷 Niort | 326 | 1962 |
| 14 | [IMH](https://www.tamtam.ai/c/imh) (ima.eu)<br>Specializes in housing services with expertise in building contractor networks and remote damage assessment for residential properties. | Insurance | 🇫🇷 Échiré | 306 | 2007 |
| 15 | [Communauté d'Agglomération du Niortais](https://www.tamtam.ai/c/communaute-d-agglomeration-du-niortais) (niortagglo.fr)<br>Intercommunal structure managing 40 communes across 821 km² in southwestern France, focusing on urban and regional development around Niort. | Government Administration | 🇫🇷 Niort | 295 |  |
| 16 | [Pierre Guérin SAS](https://www.tamtam.ai/c/pierre-guerin-sas) (pierreguerin.com)<br>Design and manufacture stainless steel process vessels and technology-driven equipment for Food & Beverage and Life Sciences industries worldwide. | Industrial Machinery Manufacturing | 🇫🇷 Mauzé-sur-le-Mignon | 294 | 1949 |
| 17 | [BGN](https://www.tamtam.ai/c/bgn) (bgnsas.com)<br>A company near Niort specializes in metal construction, offering services in industrial buildings, metal structures, cladding, aluminum joinery, and metalwork | Construction | 🇫🇷 La Crèche | 269 | 1948 |
| 18 | [ADC - Fayat Group 1](https://www.tamtam.ai/c/adc-fayat-group-1) (fayat.com)<br>French manufacturer of lifting and handling equipment, offering tailor-made solutions for various clients globally, combining steel structure and equipment manufacturing expertise. | Machinery Manufacturing | 🇫🇷 Parthenay | 262 | 1919 |
| 19 | [Groupe Y](https://www.tamtam.ai/c/groupe-y) (groupey.fr)<br>Provides specialized accounting and auditing services across Poitou-Charentes, Pays de la Loire, and Paris through multiple regional offices focused on business management. | Accounting | 🇫🇷 Niort | 252 | 1956 |
| 20 | [DARVA](https://www.tamtam.ai/c/darva) (darva.com)<br>Provider of a B2B platform and extranet solutions for a French insurance company, facilitating business transactions and communication with external partners | Strategic Management Services | 🇫🇷 Chauray | 238 | 1988 |
| 21 | [Camif Habitat](https://www.tamtam.ai/c/camif-habitat) (camif-habitat.fr)<br>Provides secure and comprehensive support for renovation, extension, and fit-out projects, ensuring successful construction outcomes for clients. | Construction | 🇫🇷 Chauray | 230 | 1982 |
| 22 | [Socram Banque](https://www.tamtam.ai/c/socram-banque) (socram-banque.fr)<br>Providing seamless financial solutions and trusted partnership to distributors, addressing clients' financial needs with market-leading offerings. | Banking | 🇫🇷 Niort | 223 | 1968 |
| 23 | [HEULIEZ BUS](https://www.tamtam.ai/c/heuliez-bus) (ivecobus.com)<br>Specializing in electric buses, this site produces a range of zero-emission buses tailored to each mission, with production certified "Origine France Garantie" | Motor Vehicle Manufacturing | 🇫🇷 Mauleon | 202 | 1980 |
| 24 | [Manutan-Collectivités](https://www.tamtam.ai/c/manutan-collectivites) (manutan-collectivites.fr)<br>Retailer specializing in business supplies and equipment with multiple locations across France, serving various professional sectors efficiently. | Retail Office Equipment | 🇫🇷 Niort | 201 |  |
| 25 | [SERVAL SAS](https://www.tamtam.ai/c/serval-sas) (serval.fr)<br>Production of high-quality milk-based feeding solutions and nutritional supplements for young animals, supporting responsible livestock farming globally. | Farming | 🇫🇷 Sainte-Eanne | 186 | 1959 |
| 26 | [Groupe Laboratoire Rivadis](https://www.tamtam.ai/c/groupe-laboratoire-rivadis) (labo-rivadis.fr)<br>Develops, manufactures, packages, and markets hygiene and care products for medical, hospital, and family use, sold through various channels including direct sales and pharmacies. | Personal Care Product Manufacturing | 🇫🇷 Louzy | 171 | 1975 |
| 27 | [MAIF VIE](https://www.tamtam.ai/c/maif-vie) (maif.fr)<br>Specialized subsidiary of MAIF Group focused on designing and managing life insurance and provident contracts | Insurance | 🇫🇷 Niort | 163 | 1984 |
| 28 | [LEUL Menuiseries](https://www.tamtam.ai/c/leul-menuiseries) (leul.fr)<br>Crafting bespoke doors, windows from wood, PVC, aluminum. French manufacturing for home renovation, heritage. Partnering with artisans across France. | Construction | 🇫🇷 Thouars | 158 | 1973 |
| 29 | [ECF CERCA](https://www.tamtam.ai/c/ecf-cerca) (ecf-cerca.fr)<br>ECF is a leading European education and training provider in driving and road safety, offering a wide range of driving courses beyond traditional driving schools | Consumer Services | 🇫🇷 La Crèche | 156 | 1978 |
| 30 | [SEOLIS](https://www.tamtam.ai/c/seolis) (seolis.net)<br>A company created by a local energy union to electrify rural areas, emphasizing local values and public service principles | Consumer Services | 🇫🇷 Niort | 156 | 2008 |
| 31 | [Immobilière Atlantic Aménagement](https://www.tamtam.ai/c/immobiliere-atlantic-amenagement) (atlantic-amenagement.com)<br>A key player in social housing in Nouvelle-Aquitaine, offering innovative and sustainable housing solutions, urban and rural, with a focus on human well-being Engaged in corporate social responsibility initiatives | Real Estate | 🇫🇷 Niort | 150 | 1960 |
| 32 | [Ribouleau Monosem](https://www.tamtam.ai/c/ribouleau-monosem) (monosem.fr)<br>This company specializes in manufacturing precision seeders and hoes, trusted by farmers globally for reliable, durable, and high-performance agricultural technology. | Machinery Manufacturing | 🇫🇷 Largeasse | 146 | 1948 |
| 33 | [C2E - Solutions for Cabling](https://www.tamtam.ai/c/c2e-solutions-for-cabling) (c2e-cablage.com)<br>Providing information about company expertise and main applications, focusing on growth strategy and expansion into new territories. | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Airvault | 144 | 2001 |
| 34 | [iXAPACK GLOBAL](https://www.tamtam.ai/c/ixapack-global) (ixapack.com)<br>A French family-owned company specializing in designing and manufacturing weighing, cutting, wrapping, and packaging equipment for food/beverage and cosmetic industries worldwide | Machinery Manufacturing | 🇫🇷 Mauléon | 139 | 1973 |
| 35 | [MAIF SOLUTIONS FINANCIERES](https://www.tamtam.ai/c/maif-solutions-financieres) (maif.fr)<br>A financial solutions company located in Niort, France, offering services related to insurance, investments, and other financial products | Financial Services | 🇫🇷 Niort | 129 | 2007 |
| 36 | [TECNAL](https://www.tamtam.ai/c/tecnal) (tecnal.fr)<br>A worldwide contractor and integrator specializing in manufacturing machinery for dairy and cheese industries, ensuring high product quality and optimized yields | Industrial Machinery Manufacturing | 🇫🇷 Niort | 123 | 1931 |
| 37 | [Association Melioris](https://www.tamtam.ai/c/association-melioris) (melioris-association.fr)<br>Group of 16 private healthcare and medico-social facilities providing care, rehabilitation, and support for vulnerable and dependent individuals. | Hospitals and Health Care | 🇫🇷 Niort | 123 | 2012 |
| 38 | [LOEUL & PIRIOT](https://www.tamtam.ai/c/loeul-and-piriot) (loeul-et-piriot.com)<br>Specializes in transforming and marketing high-quality French rabbit meat, emphasizing tradition, innovation, and sustainable farming practices. | Food and Beverage Manufacturing | 🇫🇷 Thouars | 117 | 1906 |
| 39 | [CPAM des Deux-Sèvres (Assurance Maladie)](https://www.tamtam.ai/c/cpam-des-deux-sevres-assurance-maladie) (ameli.fr)<br>Working at this company means dedicating to protecting the health of over 60 million insured individuals through various projects and services | Government Administration | 🇫🇷 Niort | 109 | 1945 |
| 40 | [GÉRÉDIS Deux Sèvres](https://www.tamtam.ai/c/geredis-deux-sevres) (geredis.fr)<br>GÉRÉDIS Deux-Sèvres manages the public electricity distribution network in Deux-Sèvres, including operation, maintenance, and development of the network | Consumer Services | 🇫🇷 Niort | 105 | 2008 |
| 41 | [Territoria Prévoyance](https://www.tamtam.ai/c/territoria-prevoyance) (territoria-mutuelle.fr)<br>Provides innovative mutualist social protection solutions for territorial agents, enhancing workplace well-being and reducing absenteeism with public employers. | Insurance | 🇫🇷 Chauray | 103 | 2005 |
| 42 | [À l'Ombre des Marques](https://www.tamtam.ai/c/a-l-ombre-des-marques) (alombredesmarques.fr)<br>Specialized since 1993 in overstocking brand clothing, operating 27 stores and an online sales site, offering discounts up to 70%. | Retail | 🇫🇷 La Crèche | 101 | 1993 |
| 43 | [Asselin](https://www.tamtam.ai/c/asselin) (asselin.fr)<br>Craftsmen specializing in historic monument restoration, custom high-end residences, traditional windows, doors, wood panels, parquet flooring, and staircases. | Construction | 🇫🇷 Thouars | 99 | 1957 |
| 44 | [Parthenay-Gâtine - Communauté de communes](https://www.tamtam.ai/c/parthenay-gatine-communaute-de-communes) (cc-parthenay-gatine.fr)<br>Parthenay-Gâtine is a territory in Deux-Sèvres with 38 municipalities, known for its rich history, preserved environment, vibrant community, and innovative economic sectors | Government Administration | 🇫🇷 Parthenay | 98 | 2014 |
| 45 | [Meubles CELIO](https://www.tamtam.ai/c/meubles-celio) (meubles-celio.fr)<br>This company designs and produces furniture with custom storage solutions, emphasizing quality, French manufacturing, innovation, and environmental respect. Products include bedrooms, wardrobes, and living room units. | Furniture and Home Furnishings Manufacturing | 🇫🇷 La Chapelle-Saint-Laurent | 96 | 1952 |
| 46 | [Agglomération du Bocage Bressuirais](https://www.tamtam.ai/c/agglomeration-du-bocage-bressuirais) (agglo2b.fr)<br>A government administration company located in Bressuire, France, focused on the development and management of the Bocage Bressuirais community | Government Administration | 🇫🇷 Bressuire | 95 | 2014 |
| 47 | [Kate](https://www.tamtam.ai/c/kate) (kate.tech)<br>French electric car manufacturer producing emission-free vehicles for individuals and professionals, including models for last mile delivery and young drivers aged 14 and up | Motor Vehicle Manufacturing | 🇫🇷 Cerizay | 94 | 2022 |
| 48 | [ELKAR](https://www.tamtam.ai/c/elkar) (elkar-ingenierie.com)<br>Specializes in mechanical engineering, manufacturing, and industrial metrology. Offers turnkey solutions in mechanical, electrical, hydraulic, pneumatic, and automation fields. | Industrial Machinery Manufacturing | 🇫🇷 Mauleon | 92 | 2005 |
| 49 | [Glassolutions BUMI – Glassver \| Climaver \| CEV \| Auvergne Isolation](https://www.tamtam.ai/c/glassolutions-bumi-glassver-climaver-cev-auvergne-isolation) (saint-gobain-glass.fr)<br>The BUMI unit brings together 4 manufacturing sites producing insulating glass for industrial carpenters, with over 500 employees supporting client development Contact: contactbumi@saint-gobaincom | Wholesale Building Materials | 🇫🇷 Saint-Pierre-des-Échaubrognes | 91 | 1991 |
| 50 | [Groupe Archimbaud](https://www.tamtam.ai/c/groupe-archimbaud) (groupe-archimbaud.com)<br>Family-owned since 1932, a key player in the wood industry, specializing in sawing, pallet manufacturing, and byproduct valorization through pellet and cogeneration plants. | Paper and Forest Product Manufacturing | 🇫🇷 Secondigné-sur-Belle | 90 | 1932 |

## 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 Deux-Sèvres department

- [Manufacturers in the Deux-Sèvres department](https://www.tamtam.ai/l/manufacturers-deux-sevres) (32)
- [Companies with in-house R&D in the Deux-Sèvres department](https://www.tamtam.ai/l/r-and-d-companies-deux-sevres) (28)
- [Retail chains in the Deux-Sèvres department](https://www.tamtam.ai/l/retail-chains-deux-sevres) (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-deux-sevres