# The 30 largest family-owned companies in the Ain department
Tamtam tracks 46 family-owned companies headquartered in the Ain department. This list ranks the 30 largest by number of employees on LinkedIn, led by Chausson Mat茅riaux, Groupe Martin Belaysoud and GROUPE BERNARD. Their median headcount is 109. Half of them were founded in 1966 or later. The most common headquarters are Bourg-en-Bresse (4) and Oyonnax (3).
The companies in this list are primarily large, family-owned businesses in the Ain department, spanning various industrial and retail sectors. Chausson Mat茅riaux specializes in construction materials distribution, while Groupe Martin Belaysoud focuses on professional distribution. GROUPE BERNARD is a major distributor of vehicles, and Ligne Roset designs and manufactures contemporary furniture.
Most of these companies were founded in the early to mid-20th century, indicating a long-standing industrial presence in the region. A notable pattern is the concentration of headquarters in Bourg-en-Bresse, with other significant locations including Saint-Alban and Beynost, highlighting key economic hubs within the department.
馃嚝馃嚪 Ain 路 30 companies 路 Updated Nov 14, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Chausson Mat茅riaux](https://www.tamtam.ai/c/chausson-materiaux) (chausson.fr)
Family-owned independent distributor specializing in construction materials, emphasizing honesty, reliability, and strong customer relationships with professionals. | Retail | 馃嚝馃嚪 Saint-Alban | 2,720 | 1921 |
| 2 | [Groupe Martin Belaysoud](https://www.tamtam.ai/c/groupe-martin-belaysoud) (martin-belaysoud.com)
The company, established since 1829, specializes in professional distribution with a national presence and innovative e-commerce sites They focus on strong values and personalized relationships with clients | Wholesale | 馃嚝馃嚪 Bourg-en-Bresse | 2,115 | 1829 |
| 3 | [GROUPE BERNARD](https://www.tamtam.ai/c/groupe-bernard-bourg-en-bresse) (groupe-bernard.fr)
Family-owned group, major distributor of various car, industrial, and utility vehicle brands across multiple French regions, with 127 sales points. | Retail Motor Vehicles | 馃嚝馃嚪 Bourg-en-Bresse | 657 | 1921 |
| 4 | [ISERBA](https://www.tamtam.ai/c/iserba) (iserba.fr)
A national leader in social housing maintenance, offering a wide range of services with 800 employees across 25 agencies in France | Construction | 馃嚝馃嚪 Beynost | 473 | 1978 |
| 5 | [Ligne Roset](https://www.tamtam.ai/c/ligne-roset) (ligne-roset.com)
Design, manufacture, and distribution of contemporary furniture, lighting, textiles, rugs, and decorative accessories for a complete lifestyle. | Furniture and Home Furnishings Manufacturing | 馃嚝馃嚪 Briord | 395 | 1860 |
| 6 | [Grosfillex Group](https://www.tamtam.ai/c/grosfillex-group) (grosfillex-expert.com)
This company specializes in furnishing and remodeling indoor and outdoor spaces with French designer products for homes, businesses, and public venues worldwide | Construction | 馃嚝馃嚪 Arbent | 358 | 1927 |
| 7 | [BISCUITS BOUVARD](https://www.tamtam.ai/c/biscuits-bouvard) (biscuits-bouvard.com)
Family business creates balanced, organic cereal products: cookies, cakes, and snacks. They partner with other businesses, offering expertise and a wide product range. | Food and Beverage Manufacturing | 馃嚝馃嚪 Ceyzeriat | 311 | 1902 |
| 8 | [MAPEI France](https://www.tamtam.ai/c/mapei-france) (mapei.com)
A family-owned Italian company specializing in building solutions and decoration, with a strong international presence and a focus on innovation and quality | Chemical Manufacturing | 馃嚝馃嚪 Saint-Alban | 301 | 1989 |
| 9 | [Autobernard](https://www.tamtam.ai/c/autobernard) (autobernard.com)
Autobernard is a professional automotive distribution brand offering new and used vehicles, aftersales services, and a network of 73 concessions across several regions | Motor Vehicle Manufacturing | 馃嚝馃嚪 Bourg-en-Bresse | 225 | 1921 |
| 10 | [STEEP Plastique](https://www.tamtam.ai/c/steep-plastique) (steep-plastique.com)
Injection moulding of engineering thermoplastics for automotive applications, focusing on lightweight, integrated functions for thermal, hybrid, and electric vehicles. | Plastics and Rubber Product Manufacturing | 馃嚝馃嚪 Saint-Maurice-de-Beynost | 198 | 1969 |
| 11 | [LGR Packaging](https://www.tamtam.ai/c/lgr-packaging) (lgr-packaging.com)
A European manufacturer specializing in litho-printed cardboard packaging, offering solidboard folding cartons, laminated boxes, leaflets, and rigid boxes across multiple sites | Packaging and Containers Manufacturing | 馃嚝馃嚪 Oyonnax | 160 | |
| 12 | [GERGONNE INDUSTRIE - THE ADHESIVE SOLUTION](https://www.tamtam.ai/c/gergonne-industrie-the-adhesive-solution) (gergonne.com)
An independent French industrial group specializing in manufacturing and converting adhesive tapes and die-cut items for various markets globally | Chemical Manufacturing | 馃嚝馃嚪 Oyonnax | 141 | 1962 |
| 13 | [Georges Blanc](https://www.tamtam.ai/c/georges-blanc) (georgesblanc.com)
Gastronomy group offering Michelin-starred restaurant, brasseries, hotels, bakery, and boutiques focused on quality, tradition, and luxury. | Restaurants | 馃嚝馃嚪 Vonnas | 131 | 1872 |
| 14 | [Adduxi](https://www.tamtam.ai/c/adduxi) (adduxi.com)
Family-owned international company providing industrial solutions, particularly in the automotive industry Specializing in product development, production process optimization, cost efficiency, quality, and innovation | Motor Vehicle Manufacturing | 馃嚝馃嚪 Bellignat | 113 | 1996 |
| 15 | [AIRVANCE Group](https://www.tamtam.ai/c/airvance-group) (airvancegroup.com)
A leading supplier of HVAC products in Europe, providing high-quality solutions and raising awareness about indoor air quality | Wholesale Building Materials | 馃嚝馃嚪 Beynost | 109 | 1994 |
| 16 | [Monnet-S猫ve Sougy](https://www.tamtam.ai/c/monnet-seve-sougy) (monnet-seve.com)
A French family-owned company specializing in softwood sawing, optimizing and enhancing French wood to support various projects with passionate wood and forest enthusiasts. | Paper and Forest Product Manufacturing | 馃嚝馃嚪 Outriaz | 93 | 1929 |
| 17 | [SERIPLAST](https://www.tamtam.ai/c/seriplast) (seriplast.fr)
Manufacturer of packaging plastic for cosmetics brands since 1966, specializing in thermoplastic injection and decoration of bottles, ampoules, roll-on, and pillboxes | Plastics Manufacturing | 馃嚝馃嚪 Oyonnax | 84 | 1966 |
| 18 | [BCI](https://www.tamtam.ai/c/bci-beynost) (bci-solutions.fr)
Specializes in home renovation focusing on insulation, ventilation, heating, and maintenance to improve comfort and reduce energy costs. | Construction | 馃嚝馃嚪 Beynost | 68 | 2012 |
| 19 | [Groupe Murgier](https://www.tamtam.ai/c/groupe-murgier) (linktr.ee)
Family-owned distributor of beers, coffee, hot drinks, wines, and spirits serving Rh么ne-Alpes region with modernized, customer-focused service. | Wholesale | 馃嚝馃嚪 La Boisse | 66 | 1936 |
| 20 | [HYL脡ANCE](https://www.tamtam.ai/c/hyleance) (hyleance.com)
A French industrial group specializing in plastic injection and extrusion blow molding, serving various markets with a focus on eco-friendly development | Plastics Manufacturing | 馃嚝馃嚪 Ceyzeriat | 60 | 2021 |
| 21 | [PINARD BEAUTY PACK](https://www.tamtam.ai/c/pinard-beauty-pack) (pinard-beauty-pack.com)
Family company specializing in advanced plastic bottle manufacturing technologies for cosmetics and parapharmacy sectors near Oyonnax, France. | Plastics Manufacturing | 馃嚝馃嚪 Martignat | 55 | |
| 22 | [Giraudet](https://www.tamtam.ai/c/giraudet) (giraudet.fr)
A French company specializing in traditional Bresse cuisine, producing quenelles, soups, and sauces using local suppliers and selling through their own boutiques | Food and Beverage Manufacturing | 馃嚝馃嚪 Bourg-en-Bresse | 54 | 1910 |
| 23 | [PEAGE](https://www.tamtam.ai/c/peage) (peage-assainissement.fr)
Family-owned company with 30 employees based in the Lyon region for over 20 years Specializing in general sanitation, maintenance, and emergency plumbing services for buildings, industries, and communities | Environmental Services | 馃嚝馃嚪 Neyron | 52 | 2000 |
| 24 | [Courant](https://www.tamtam.ai/c/courant-manziat) (courant.fr)
A family-owned company in the plastic industry, manufacturing conduits, sleeves, and grids for various sectors, emphasizing sustainability in production and product lifespan | Plastics Manufacturing | 馃嚝馃嚪 Manziat | 50 | 1953 |
| 25 | [Cinna](https://www.tamtam.ai/c/cinna) (cinna.fr)
Cinna offers a modern collection of furniture, lighting, and decor created by 70 international designers, embodying values of authenticity and innovation | Furniture and Home Furnishings Manufacturing | 馃嚝馃嚪 Briord | 49 | 1975 |
| 26 | [OCEDIS](https://www.tamtam.ai/c/ocedis) (ocedis.com)
Ocedis supplies professionals worldwide with water service products, materials, and solutions, with a strong presence in Europe, Africa, and Asia | Chemical Manufacturing | 馃嚝馃嚪 Tr茅voux | 49 | 2003 |
| 27 | [BCM M茅tallerie](https://www.tamtam.ai/c/bcm-metallerie) (bcm-metallerie.com)
Metal transformation services including laser cutting, machining, welding, and assembly for diverse industries with advanced equipment and expertise. | Industrial Machinery Manufacturing | 馃嚝馃嚪 Saint-Rambert-en-Bugey | 36 | 1991 |
| 28 | [IPM-MONDIA](https://www.tamtam.ai/c/ipm-mondia) (ipm-mondia.com)
Design and manufacture custom sandwich panels for industrial, transport, and housing sectors with eco-friendly, turnkey, and durable solutions. | Manufacturing | 馃嚝馃嚪 Pont-de-Vaux | 27 | |
| 29 | [Rh么ne Peinture Automobile](https://www.tamtam.ai/c/rhone-peinture-automobile) (rhonepeintureautomobile.fr)
A family-owned company specializing in automotive paint since 1983 in the Auvergne-Rh么ne-Alpes region, emphasizing customer proximity and simplicity | Motor Vehicle Manufacturing | 馃嚝馃嚪 Neyron | 26 | |
| 30 | [SOUDAL France](https://www.tamtam.ai/c/soudal-france) (soudal.com)
Business-to-business sales of sealants, adhesives, and polyurethane foams | Chemical Manufacturing | 馃嚝馃嚪 Blyes | 26 | 1966 |
## 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 14, 2026.
## More company lists in the Ain department
- [The largest companies in the Ain department](https://www.tamtam.ai/l/largest-companies-ain) (511)
- [Manufacturers in the Ain department](https://www.tamtam.ai/l/manufacturers-ain) (98)
- [Companies with in-house R&D in the Ain department](https://www.tamtam.ai/l/r-and-d-companies-ain) (90)
- [Multinational companies in the Ain department](https://www.tamtam.ai/l/multinational-companies-ain) (73)
- [Contract manufacturers in the Ain department](https://www.tamtam.ai/l/contract-manufacturers-ain) (64)
- [Hardware manufacturers in the Ain department](https://www.tamtam.ai/l/hardware-companies-ain) (53)
- [Plastics Manufacturing companies in the Ain department](https://www.tamtam.ai/l/plastics-manufacturing-companies-ain) (53)
- [Chemical companies in the Ain department](https://www.tamtam.ai/l/chemical-companies-ain) (51)
- [Construction companies in the Ain department](https://www.tamtam.ai/l/construction-companies-ain) (42)
- [Distributors and wholesalers in the Ain department](https://www.tamtam.ai/l/distributors-and-wholesalers-ain) (41)
- [Retail chains in the Ain department](https://www.tamtam.ai/l/retail-chains-ain) (38)
## The same list elsewhere in France
- [Family-owned companies in France](https://www.tamtam.ai/l/family-owned-companies-france) (3,857)
- [Family-owned companies in 脦le-de-France](https://www.tamtam.ai/l/family-owned-companies-ile-de-france) (761)
- [Family-owned companies in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/family-owned-companies-auvergne-rhone-alpes) (575)
- [Family-owned companies in Grand Est](https://www.tamtam.ai/l/family-owned-companies-grand-est) (366)
- [Family-owned companies in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/family-owned-companies-provence-alpes-cote-dazur) (345)
- [Family-owned companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/family-owned-companies-nouvelle-aquitaine) (322)
- [Family-owned companies in Hauts-de-France](https://www.tamtam.ai/l/family-owned-companies-hauts-de-france) (277)
- [Family-owned companies in Occitanie](https://www.tamtam.ai/l/family-owned-companies-occitanie) (272)
- [Family-owned companies in Pays de la Loire](https://www.tamtam.ai/l/family-owned-companies-pays-de-la-loire) (255)
- [Family-owned companies in Brittany](https://www.tamtam.ai/l/family-owned-companies-brittany) (201)
- [Family-owned companies in Bourgogne-Franche-Comt茅](https://www.tamtam.ai/l/family-owned-companies-bourgogne-franche-comte) (158)
- [Family-owned companies in the Nord department](https://www.tamtam.ai/l/family-owned-companies-nord) (156)
- [Family-owned companies in the Rh么ne department](https://www.tamtam.ai/l/family-owned-companies-rhone) (149)
- [Family-owned companies in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/family-owned-companies-bouches-du-rhone) (142)
- [Family-owned companies in Normandy](https://www.tamtam.ai/l/family-owned-companies-normandy) (135)
- [Family-owned companies in Centre-Val de Loire](https://www.tamtam.ai/l/family-owned-companies-centre-val-de-loire) (103)
- [Family-owned companies in the Gironde department](https://www.tamtam.ai/l/family-owned-companies-gironde) (103)
- [Family-owned companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/family-owned-companies-hauts-de-seine) (102)
- [Family-owned companies in the Bas-Rhin department](https://www.tamtam.ai/l/family-owned-companies-bas-rhin) (93)
- [Family-owned companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/family-owned-companies-ille-et-vilaine) (81)
- [Family-owned companies in the Alpes-Maritimes department](https://www.tamtam.ai/l/family-owned-companies-alpes-maritimes) (80)
- [Family-owned companies in the Haute-Garonne department](https://www.tamtam.ai/l/family-owned-companies-haute-garonne) (72)
- [Family-owned companies in the Loire-Atlantique department](https://www.tamtam.ai/l/family-owned-companies-loire-atlantique) (71)
- [Family-owned companies in Paris](https://www.tamtam.ai/l/family-owned-companies-paris) (368)
## The same list elsewhere
- [Family-owned companies in the world](https://www.tamtam.ai/l/family-owned-companies-in-the-world) (14,667)
- [Family-owned companies in Europe](https://www.tamtam.ai/l/family-owned-companies-in-europe) (9,878)
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Source: https://www.tamtam.ai/l/family-owned-companies-ain