| # | Company | Employees |
|---|---|---|
| 1 |
Groupama Centre Manchegroupama-gan-recrute.com
Groupama Centre Manche operates in 8 departments, providing insurance and financial services in Calvados, Eure, Manche, Sarthe, and other regions in France |
1,016 |
| 2 |
Crédit Agricole Val de Francecredit-agricole.fr
Regional mutualist bank providing personalized financial services, supporting local economic and social development with digital innovation and human proximity. |
842 |
| 3 |
NoveoCarenoveocare.com
Management of medical expenses, disability, dependency, death benefits, and complementary retirement contracts for over one million beneficiaries. |
526 |
| 4 |
Département d’Eure et Loireurelien.fr
Support social welfare, health, autonomy, employment integration, manage roads and education infrastructure, promote collaborative work culture and career opportunities. |
427 |
| 5 |
GROUPE LORILLARDlorillard.fr
Specializes in custom joinery manufacturing, energy-efficient renovation, asbestos and lead removal, serving residential and commercial building sectors in France. |
355 |
| 6 |
Cosmetic Valleycosmetic-valley.com
A leading competitiveness cluster in the fragrance and cosmetics industry, promoting networking, research, innovation, and international cooperation for companies worldwide |
320 |
| 7 |
Chartres métropolechartres-metropole.fr
Regional agglomeration supporting 66 communes with economic development, innovation incubation, major infrastructure, and cultural facilities for 140,000 residents. |
317 |
| 8 |
SFR Business Distributionsfrbusiness.fr
SFR Business Distribution is the national distributor of SFR Business, providing a range of telecom and IT solutions for businesses of all sizes |
219 |
| 9 |
Centre hospitalier de Chartresch-chartres.fr
Public healthcare institution located in the Centre - Val de Loire region, providing medical services to the community |
214 |
| 10 |
Groupe Coopératif SCAELgroupe-scael.com
Provides agricultural products and services to farmers, ensuring technical, economic, regulatory, and environmental support from seed to export. |
143 |
| 11 |
GFP_techgfptechnologies.fr
Development of comprehensive SaaS software for medical insurance and risk management, including CRM, BI, and mobile applications. |
139 |
| 12 |
Groupe 5 sur 55sur5.fr
5sur5 is a subsidiary of the Numéricâble/SFR Group, responsible for distributing mobile telephony, ADSL, and fiber optic offers |
138 |
| 13 |
Aqualteraqualter.com
AQUALTER is an independent water company in France, specializing in water production, distribution, treatment, and construction with a focus on sustainability and customer relationships |
133 |
| 14 |
LORENOVEfenetres-lorenove.fr
Manufacture and install custom windows, doors, shutters in PVC, wood, aluminum for private homes and condominiums across France. |
120 |
| 15 |
MULLER AUTOMOTIVEmullerautomotive.fr
Design and manufacture vehicle inspection equipment including measurement chains, pollution control devices, and mobile stations with global customer support and maintenance services. |
115 |
| 16 | 98 | |
| 17 |
CPAM d'Eure-et-Loirameli.fr
A health insurance organization in Eure-et-Loir with 320 employees ensuring access to healthcare, offering benefits payments, prevention initiatives, and health promotion for beneficiaries |
93 |
| 18 |
MSA Beauce Cœur de Loirebcl.msa.fr
A leading social protection system in France for the agricultural sector, promoting solidarity, responsibility, democracy, and the vitality of rural areas |
90 |
| 19 | 90 | |
| 20 |
FONDATION TEXIER GALLAStexiergallas.org
A non-profit organization managing 6 EHPADs, a retirement home for disabled adults, and a shared housing facility in Eure et Loir, France |
90 |
| 21 |
Préfecture d'Eure-et-Loireure-et-loir.gouv.fr
The company's main focus is on representing the state, ensuring security, providing public services, upholding the rule of law, promoting social integration, and managing economic development |
75 |
| 22 |
ASAHI DIAMOND INDUSTRIAL EUROPEasahidia.eu
European leader in superabrasives, manufacturing and selling diamond and cBN tools for grinding, sharpening, cutting, and polishing across various industries |
68 |
| 23 |
Groupe HEDISgroupe-hedis.com
Distribution of hygiene and cleaning products and equipment for professionals in hospitality, industry, and cleaning sectors across France. |
65 |
| 24 |
Sitrans Logistique - Transports & Entreposagesitrans.fr
A medium-sized logistics company offering competitive transportation and warehousing services, focusing on customer service, flexibility, and a responsive information system |
60 |
| 25 |
CFA Interprofessionnel d'Eure-et-Loircfainterpro28.com
A training organization in Chartres offering apprenticeships in various trades with partnerships with over 800 companies for practical training |
57 |
| 26 | 39 | |
| 27 |
ALLEAallea-solutions.fr
Independent digital transformation consultancy, specializing in E-health, public sector, industry & services Provides strategy, project management, technical expertise, and innovation support services |
34 |
| 28 |
LCA Pharmaceuticallca-pharma.com
Specializing in medical implant devices for ophthalmology, rheumatology, and dermatology, this company focuses on innovation, technology, and customer satisfaction, holding numerous patents globally |
32 |
| 29 |
POLEPHARMApolepharma.com
Industrial cooperation uniting French pharmaceutical sector members to enhance drug production, innovation, employment, and national health sovereignty across multiple regions. |
31 |
| 30 |
FONCIA BRETTE S.A.fr.foncia.com
A innovative leader in private housing development and management since 1973, offering a wide range of residential real estate services |
29 |
| 31 |
Cereapro.comlinktr.ee
online platform for farmers to buy fertilizers, seeds, and phytos, and sell grain harvests, with direct pricing based on market rates and logistics. |
26 |
| 32 |
OPH de Chartres Métropole / Chartres Métropole Habitat
Real estate company in Chartres, France, specializing in property management and development within Chartres Métropole |
26 |
| 33 |
ALTER EGO NOTAIRESalteregonotaires.fr
An Eure-et-Loir based notarial firm offering personalized assistance in real estate, family law, rural law, and estate planning with a focus on human touch and expertise |
26 |
| 34 |
SRCIsolutions.srci.fr
Provider of dematerialization solutions for business processes, specializing in local government and private sector markets |
24 |
| 35 |
Promosoft Informatiquepromosoft.fr
Provides IT infrastructure design, deployment, maintenance, cybersecurity, cloud services, user support, and monitoring for businesses and administrations. |
23 |
| 36 |
Groupe DOURSgroupe-dours.fr
Leading distributor and repairer of industrial and utility vehicles in six departments, offering sales, maintenance, rental, towing assistance, and parts/services |
22 |
| 37 |
Vent en Poupe : Agence de communicationvent-en-poupe.fr
A marketing and communication strategy agency with a mission, specializing in 360° services, digital marketing, innovation, and agile project management |
21 |
| 38 |
C'Chartres Basket Masculinccbm.fr
French basketball club competing in the NM1 championship, providing a platform for male athletes to develop their skills and compete at a high level |
21 |
| 39 |
Azur Assurancesazur-assurances.fr
A reliable insurance group with over 170 years of experience, combining forces to offer the best service to their clients |
21 |
| 40 |
ELOKENCEelokence.com
The company develops and markets intelligent services for man-machine dialogue, making complex information databases accessible through natural language on internet and mobile devices |
20 |
| 41 |
Appui Santé 28 - DAC 28appuisante28.fr
Supporting professionals in navigating complex individual health journeys |
19 |
| 42 |
CARPRASSUR Courtage
Specialist insurance broker for businesses since 1980 in Châteaudun, Chartres, and Orléans Offers coverage for professional and personal risks with dedicated claims service |
17 |
| 43 |
C' Chartres Tourisme - Maison du Tourismechartres-tourisme.com
Promotion of local tourism, visitor information, business tourism services, group travel organization, partnerships, guided tours, and online ticketing. |
17 |
| 44 |
BYOME LABSbyomelabs.com
Research and analysis of cosmetic product compatibility with skin, providing scientific expertise and substantiation of marketing claims. |
16 |
| 45 |
1984 Agency1984.agency
Specialized marketing agency providing brand identity and marketing solutions for franchise networks since 1984 |
14 |
| 46 |
Hôtel Jehan de Beaucejehandebeauce.fr
A charming hotel in Chartres with 35 rooms, seminar space, fitness center, sauna, tisanerie, and lounge bar, near Notre Dame Cathedral |
13 |
| 47 |
MMA CD ASSUR CONSEILagence.mma.fr
CD ASSUR CONSEIL is an insurance intermediary specialized in corporate risks, registered with ORIAS under number 07010618 |
13 |
| 48 |
CAROLE DEHAYS RESSOURCES HUMAINEScaroledehays.com
A human resources firm specializing in recruitment, team building, management development, career coaching, and training, with a focus on respect, confidentiality, and ethical practices |
12 |
| 49 |
Osmose Solutionsosmose-solutions.com
A leading software for audiologists and opticians, supporting their practice and facilitating their work |
10 |
| 50 |
Théâtre de Chartrestheatredechartres.fr
A well-established theater in Chartres, showcasing various artistic genres and attracting diverse audiences with quality programming and a capacity of 500 seats |
9 |
| 51 |
Jacottet Industrie SASjacottet-industrie.com
Aviation and aerospace company located in Chartres, France, specializing in industry-specific services and innovation for domestic and international clients |
9 |
| 52 |
Tremblay Avocats Associéstremblay-avocats.fr
A law firm providing legal advice and assistance in various areas including social law, banking law, corporate law, and estate planning Serving a diverse range of clients |
8 |
| 53 |
Imagine Avocatsimagine-avocats.fr
A team of 8 specialized lawyers in Chartres providing legal advice, litigation support, and access to a network of 348 lawyers nationwide and 46 internationally |
8 |
| 54 |
DEPARTEMENT DE L'EURE ET LOIR
This government administration company operates in Eure et Loir, France, providing services and governance from its location in Chartres, Centreval De Loire |
8 |
| 55 |
LEPRINCE EXPERT SARL
An accounting company located in Chartres, France, specializing in providing expert financial services to businesses and individuals |
7 |
| 56 |
Aegis-Civisaegis-civis.com
AEGIS-CIVIS specializes in security training and consulting services to protect individuals and assets from malicious risks, tailored to each client's specific needs |
6 |
| 57 |
HUISSIERS ASSOCIÉS : DERUELLE, FENOLI-REBELLATO, THOMAShuissierschartres.com
A team of 3 partners and 11 staff members, including professional examiners, offer swift legal services in Chartres, France Specializing in debt collection and nationwide notary services |
5 |
| 58 |
Arthur Loyd - Chartres - Eure et Loir - Sud Yvelinesarthur-loyd.com
A team of professionals providing expert and efficient real estate advice, leading the market in Eure et Loir for over 20 years |
5 |
| 59 |
Universalles Congrèsuniversalles-chartres.fr
Universalles Congrès specializes in event planning from seminars to corporate parties, offering end-to-end solutions tailored to each client's needs |
4 |
| 60 |
SULPICE CONSEIL
Accounting firm located in Chartres, France, specializing in expertise and audit services for businesses |
4 |
| 61 |
gibier festivi rivierre guepingfrg-avocats.com
Legal firm specializing in providing expert advice and services in the field of law to individuals and corporations |
2 |
| 62 |
Zeelandia Francezeelandia.be
A global leader in bakery ingredients, inspiring bakers with high-quality ingredients and innovative solutions to succeed in baking, managing, and selling |
2 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 Oct 24, 2026.
The same list elsewhere in France
- The largest companies in France 75,805
- The largest companies in Île-de-France 30,863
- The largest companies in Auvergne-Rhône-Alpes 8,971
- The largest companies in Provence-Alpes-Côte d'Azur 5,836
- The largest companies in Occitanie 4,823
- The largest companies in Grand Est 4,506
- The largest companies in Nouvelle-Aquitaine 4,424
- The largest companies in Hauts-de-France 3,752
- The largest companies in Pays de la Loire 3,573
- The largest companies in Brittany 2,535
- The largest companies in Normandy 1,814
- The largest companies in Bourgogne-Franche-Comté 1,549
- The largest companies in Centre-Val de Loire 1,385
- The largest companies in Paris 19,499
- The largest companies in Lyon 2,238
- The largest companies in Marseille 1,366
- The largest companies in Toulouse 1,331
- The largest companies in Bordeaux 928
- The largest companies in Nantes 796
- The largest companies in Lille 731
- The largest companies in Boulogne-Billancourt 701
- The largest companies in Montpellier 633
- The largest companies in Aix-en-Provence 571
- The largest companies in Strasbourg 547