# Retail chains headquartered in the Seine-Maritime department

Tamtam tracks 97 retail chains headquartered in the Seine-Maritime department. This list ranks the 30 largest by number of employees on LinkedIn, led by Matmut, Crédit Agricole Normandie-Seine and Caisse d'Epargne Normandie. Their median headcount is 135. Half of them were founded in 1998 or later. The most common headquarters are Rouen (10), Le Havre (2) and Saint-Étienne-du-Rouvray (2).

These are the largest companies in Seine-Maritime, primarily mid-sized firms. The list features a mix of sectors, with a notable presence of financial services, retail, and agriculture. Matmut, an insurance provider, and Crédit Agricole Normandie-Seine, a regional bank, are prominent financial entities. Espace Culturel E.Leclerc operates cultural retail spaces, while NATUP is an agricultural cooperative. Mon Véto is a network of veterinary clinics, and PAUL MARIUS specializes in retro-inspired leather goods.

A significant pattern observed is the concentration of headquarters in and around Rouen and Bois-Guillaume. Many companies on this list were founded in the latter half of the 20th century or early 21st century, indicating a blend of established and relatively newer enterprises within the department.

🇫🇷 Seine-Maritime · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Matmut](https://www.tamtam.ai/c/matmut) (matmut.fr)<br>Provides diverse insurance products, including health and life, to millions of members, emphasizing sustainability, social responsibility, and community well-being in France. | Insurance | 🇫🇷 Rouen | 4,244 | 1961 |
| 2 | [Crédit Agricole Normandie-Seine](https://www.tamtam.ai/c/credit-agricole-normandie-seine) (ca-normandie-seine.fr)<br>Regional bank with 130 branches and online services for individuals, professionals, farmers, businesses, and public communities in Eure and Seine-Maritime. | Banking | 🇫🇷 Bois-Guillaume | 1,566 |  |
| 3 | [Caisse d'Epargne Normandie](https://www.tamtam.ai/c/caisse-d-epargne-normandie) (caisse-epargne.fr)<br>Regional bank serving individuals, professionals, businesses, and local authorities with tailored financial advice and community project support in Normandy. | Banking | 🇫🇷 Bois-Guillaume | 1,402 | 2008 |
| 4 | [Espace Culturel E.Leclerc](https://www.tamtam.ai/c/espace-culturel-e-leclerc) (e.leclerc)<br>This company operates cultural spaces that offer a variety of products and services to customers | Retail | 🇫🇷 Canteleu | 631 |  |
| 5 | [NATUP](https://www.tamtam.ai/c/natup) (natup.coop)<br>This agricultural and agri-food cooperative supports 7000 farmers, focusing on sustainable agriculture, processing, and distributing raw or transformed products across a wide territory. | Farming | 🇫🇷 Bois-Guillaume | 426 |  |
| 6 | [OXYPHARM](https://www.tamtam.ai/c/oxypharm) (vitadomia.com)<br>Oxypharm offers personalized medical technology solutions through collaboration with pharmacists, specializing in home medical equipment, respiratory care, infusion/nutrition/diabetes, and disability support | Home Health Care Services | 🇫🇷 Rouen | 425 |  |
| 7 | [Mon Véto](https://www.tamtam.ai/c/mon-veto) (veterinaire-monveto.com)<br>Established in 2010 by veterinarians, this network of general veterinary clinics has expanded across various regions in France, boasting over 250 clinics and nearly 1900 veterinary professionals | Veterinary Services | 🇫🇷 Rouen | 335 | 2010 |
| 8 | [VYV 3 Normandie](https://www.tamtam.ai/c/vyv-3-normandie) (normandie.vyv3.fr)<br>Provides extensive medical and paramedical care, social support services, and community health programs across Normandy for diverse populations. | Hospitals and Health Care | 🇫🇷 Rouen | 222 | 2014 |
| 9 | [Havre Athletic Club](https://www.tamtam.ai/c/havre-athletic-club) (hac-foot.com)<br>French football club competing in Ligue 1, renowned for youth training, community engagement, stadium management, and business networking. | Spectator Sports | 🇫🇷 Le Havre | 210 | 1872 |
| 10 | [COIFF'IDIS](https://www.tamtam.ai/c/coiff-idis) (linktr.ee)<br>A leading provider of professional hairdressing and beauty products in France, founded in 1998, with a dedicated team of 245 employees supporting the industry | Wholesale | 🇫🇷 Darnétal | 208 | 1998 |
| 11 | [Nachos Mexican Good Food](https://www.tamtam.ai/c/nachos-mexican-good-food) (nachos.fr)<br>Fast-casual Mexican restaurants, fresh, tasty, and healthy food prepared on-site. Expanding through franchising across France, offering a recognized franchise network. | Restaurants | 🇫🇷 Rouen | 182 | 2013 |
| 12 | [NORMANDIE MANUTENTION](https://www.tamtam.ai/c/normandie-manutention) (normandiemanutention.fr)<br>Supplier of business supplies and equipment based in Upper Normandy, providing essential tools and materials for various industries. | Wholesale Machinery | 🇫🇷 Saint-Étienne-du-Rouvray | 166 | 1979 |
| 13 | [SOLMUR](https://www.tamtam.ai/c/solmur) (solmur.fr)<br>A company with 22 branches in Brittany and Normandy, specializing in renovation projects such as flooring, painting, tiling, tools, and wall coverings | Wholesale | 🇫🇷 Bihorel | 149 |  |
| 14 | [PAUL MARIUS](https://www.tamtam.ai/c/paul-marius) (paulmarius.fr)<br>The company specializes in creating handmade retro-inspired leather bags and accessories, with a focus on quality craftsmanship and affordable prices | Retail Apparel and Fashion | 🇫🇷 Rouen | 145 | 2011 |
| 15 | [LEPICARD AGRICULTURE](https://www.tamtam.ai/c/lepicard-agriculture) (lepicard.fr)<br>Family business, over 150 years, assists farmers daily with farm management, operating 64 sites for deposits and collections, serving 2,500 clients. | Farming | 🇫🇷 Yerville | 135 | 1868 |
| 16 | [REGIS LOC](https://www.tamtam.ai/c/regis-loc) (regisloc.fr)<br>Specializing in equipment rental since 1976, offering a wide range of tools for construction, landscaping, and DIY projects across 50 locations in France | Equipment Rental Services | 🇫🇷 Sotteville-lès-Rouen | 131 | 1976 |
| 17 | [Plein Ciel](https://www.tamtam.ai/c/plein-ciel) (pleinciel.fr)<br>Established in 1956, this French company is a leading distributor of office supplies, stationery, technology, furniture, and general services with 180 locations nationwide | Retail | 🇫🇷 Caudebec-lès-Elbeuf | 127 | 1956 |
| 18 | [Lechevalier](https://www.tamtam.ai/c/lechevalier) (groupe-lechevalier.com)<br>Specialized in industrial maintenance products distribution for over 70 years, offering a wide range of leading brand products through 17 sales points and 2 logistics centers | Wholesale | 🇫🇷 Bois-Guillaume | 124 | 1948 |
| 19 | [Niort Frères Distribution \| Nos Actualités](https://www.tamtam.ai/c/niort-freres-distribution-nos-actualites) (niortfreres.fr)<br>Specializes in automotive and heavy-duty vehicle parts, tools, consumables, and repair services in Seine-Maritime and Eure regions. | Wholesale | 🇫🇷 Rouen | 113 | 1946 |
| 20 | [Hyper U Le Grand Quevilly](https://www.tamtam.ai/c/hyper-u-le-grand-quevilly) (magasins-u.com)<br>Established in 1976, this store, now operating as Hyper U since 2009, offers a wide range of local products and in-house made items With over 300 employees and 12,000 m2 in size, they pride themselves on showcasing their skills | Retail Groceries | 🇫🇷 Le Grand-Quevilly | 111 |  |
| 21 | [L'Atelier 5](https://www.tamtam.ai/c/l-atelier-5) (latelier5.fr)<br>A custom suits and clothing brand with 11 boutiques across France, looking to expand to major cities in Europe Offers rewarding careers with freedom | Retail Apparel and Fashion | 🇫🇷 Rouen | 110 | 2012 |
| 22 | [La Halle aux Chaussures](https://www.tamtam.ai/c/la-halle-aux-chaussures)<br>Development and provision of computer software solutions, focusing on creating and distributing software products from Dieppe, France. | Software Development | 🇫🇷 Dieppe | 95 |  |
| 23 | [Le Cèdre Hospitality](https://www.tamtam.ai/c/le-cedre-hospitality)<br>An upscale hospitality & restaurant group in Normandy, managing 5 establishments with Michelin-starred dining, bistros, Mediterranean cuisine, and a charitable foundation | Hospitality | 🇫🇷 Étretat | 85 | 2022 |
| 24 | [Pasino Le Havre - Groupe Partouche](https://www.tamtam.ai/c/pasino-le-havre-groupe-partouche) (casino-lehavre.partouche.com)<br>A popular entertainment venue offering casino games, dining, a 4-star hotel with elegant rooms, event spaces, and a 630-seat theater | Gambling Facilities and Casinos | 🇫🇷 Le Havre | 73 | 2006 |
| 25 | [Le Domaine de Forges Groupe Partouche](https://www.tamtam.ai/c/le-domaine-de-forges-groupe-partouche) (domaine-de-forges.partouche.com)<br>Located in Normandy, 110km from Paris, this leisure concept offers a casino, restaurants, hotels, golf course, and spa for unforgettable events and relaxation experiences | Travel Arrangements | 🇫🇷 Forges-les-Eaux | 70 |  |
| 26 | [BURO+](https://www.tamtam.ai/c/buro-caudebec-les-elbeuf) (buroplus.com)<br>A leading office supplies and furniture provider offering competitive prices, quality logistics, and fast delivery to help businesses simplify their daily operations | Business Supplies & Equipment | 🇫🇷 Caudebec-les-Elbeuf | 68 |  |
| 27 | [Groupe Hecquet](https://www.tamtam.ai/c/groupe-hecquet)<br>Distributes several car brands like Audi, Skoda, KIA, Lamborghini. Operates used car sales centers and provides fleet management for professionals. Also, bodywork and paint services. | Motor Vehicle Manufacturing | 🇫🇷 Rouen | 63 | 1967 |
| 28 | [MARTENAT NORMANDIE](https://www.tamtam.ai/c/martenat-normandie) (martenat.fr)<br>Specializing in distributing IVECO, FIAT PROFESSIONAL, and PIAGGIO commercial vehicles, offering sales, leasing, maintenance, bodywork, painting, and after-sales services in multiple locations | Motor Vehicle Manufacturing | 🇫🇷 Saint-Étienne-du-Rouvray | 62 | 1994 |
| 29 | [Hyper U Franqueville-Saint-Pierre](https://www.tamtam.ai/c/hyper-u-franqueville-saint-pierre) (magasins-u.com)<br>Innovative local convenience store in Franqueville-Saint-Pierre with a professional team dedicated to customer service | Retail Groceries | 🇫🇷 Franqueville-Saint-Pierre | 59 | 2007 |
| 30 | [Stellantis &You Normandie](https://www.tamtam.ai/c/stellantis-and-you-normandie) (stellantisandyou.com)<br>Buy, sell, rent, and maintain Peugeot, Citroën, DS Automobiles vehicles | Motor Vehicle Manufacturing | 🇫🇷 Rouen | 57 |  |

## 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.

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## The same list elsewhere in France

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Source: https://www.tamtam.ai/l/retail-chains-seine-maritime