| # | Company | Employees |
|---|---|---|
| 1 |
Ubisoftubisoft.com
Global developer crafting original gaming experiences and entertainment across diverse brands like Assassin’s Creed, Far Cry, and Tom Clancy’s series for worldwide players. |
21,273 |
| 2 |
METEO FRANCEmeteofrance.com
A public administration focused on observing and forecasting weather patterns, ensuring the safety of life and property through various centers worldwide |
1,748 |
| 3 |
IGN - French Mapping Agency (Institut Géographique National)ign.fr
The company operates as the state's geospatial and forestry information provider, developing reference data, products, and services for various public policy support |
1,268 |
| 4 |
Hôpital national d'instruction des armées Béginhiabegin.sante.defense.gouv.fr
Provides medical and surgical care for military personnel and civilians, specializing in infectious diseases, and participating in public health services with no additional fees. |
312 |
| 5 |
INSTITUT LE VAL MANDEilvm.fr
Public medical and social institution specializing in supporting individuals with severe visual impairments and other disabilities such as psychological disorders and intellectual deficits |
139 |
| 6 |
PCM INGENIERIEpcm-ingenierie.fr
Multidisciplinary engineering group providing topography, civil engineering, building structures, urban planning, water management, environment, sanitation, and energy solutions services. |
98 |
| 7 |
Ville de Saint-Mandésaintmande.fr
A residential community located in the eastern suburbs near Paris, offering an ideal location in Val-de-Marne, Île-de-France region |
96 |
| 8 |
AISI - Expert Cybersécurité, Infrastructure & Gouvernanceaisi.fr
Provides cybersecurity expertise and infrastructure solutions for SMEs, mid-caps, and local authorities, ensuring digital protection and resilience against cyber threats through active defense and expert management. |
55 |
| 9 |
DG Consultantsone-to-one.fr
Organizes specialized business events focused on cybersecurity and digital mobility, connecting industry experts, decision-makers, and sponsors through conferences and networking. |
55 |
| 10 |
Gedivotegedivote.fr
With 20 years of experience, Gedivote provides secure electronic voting solutions for various types of elections and offers expert guidance throughout the electoral project |
36 |
| 11 | 36 | |
| 12 |
GT Expertisegt-expertise.fr
Provides accounting, tax, legal, payroll, HR, and consulting services for entrepreneurs. Focuses on client trust, transparency, and knowledge sharing in Saint-Mandé. |
30 |
| 13 |
Atixnetatixnet.fr
Atixnet is a dynamic and human-focused company specializing in custom IT solutions, web development, communication strategy, and consulting services for digital projects |
29 |
| 14 |
MadeForMedmadeformed.com
The company advocates for modernizing family medicine, building trusting patient relationships, rejecting commercialized healthcare, and developing personalized tools for better practice conditions |
28 |
| 15 |
Mentorymentory.eu
Mentory is a project focused on inclusive skills acquisition in the Telecoms, Industries, and Infrastructure sectors |
27 |
| 16 |
So Expertiseso-expertise.fr
Since 2006, this company offers accounting expertise, advisory services for SMEs, and personalized support for business leaders in the Ile-de-France region |
17 |
| 17 |
And After - Strat. Design. Dév.andafter.fr
Digital agency specializing in strategy, UX design, branding, development, and e-commerce to propel client ambitions with a strong focus on results |
14 |
| 18 |
DC EXPANSIONdcexpansion.fr
Management consulting firm based in Îledefrance, France, specializing in assisting businesses with expansion strategies and operations |
14 |
| 19 |
Inno Angelsinno-angels.com
A group of investors specializing in digital technologies, providing technical expertise and investment support for project success |
14 |
| 20 | 13 | |
| 21 |
TOUTECHNICIENS (Groupe Frangeli)toutechniciens.fr
Specializing in recruitment for industries such as aerospace, engineering, and technology, providing high-quality candidates for both temporary and permanent positions |
13 |
| 22 |
01 Technologies - ESN (Paris)01-technologies.com
Support clients in information systems, project management, software and web development, with expert consultants ensuring project success and growth. |
11 |
| 23 |
GREENOLIAgreenolia.fr
Specialized in consulting, selling, and installing heating systems, insulation, photovoltaic and thermal solar panels, and sanitary solutions in France. |
11 |
| 24 |
Météo et Climatmeteoetclimat.fr
A renowned public utility association advocating for climate action through events, publications, and collaborations to raise awareness and influence decision-makers |
8 |
| 25 |
BBO MEDIA GROUPbbomediagroup.fr
A marketing agency specialized in global communication strategies, focusing on online presence, e-marketing campaigns, SEO, results analysis, and innovative digital solutions |
8 |
| 26 | 6 | |
| 27 |
Ezychatezychat.fr
Ezychat offers an AI-powered chatbot solution to revolutionize customer interactions, providing automated, real-time responses tailored to businesses of all sizes |
6 |
| 28 |
Aequae Avocatsaequae-avocats.com
This multidisciplinary law firm offers deep expertise and personalized legal solutions with a team of 5 competent lawyers serving clients nationwide for 25 years |
5 |
| 29 |
Alrena Technologiessmartmedicase.net
A startup that develops secure mobile solutions for medical consultations in remote areas, enabling real-time connections between healthcare providers and distant doctors |
4 |
| 30 | 3 | |
| 31 |
Just In Media
The company specializes in business development, marketing strategy, communication, digital strategy, fundraising, team structuring, and coaching services |
3 |
| 32 |
La Foncière Françaiselafoncierefrancaise.fr
Real estate investment company specializing in value-added commercial properties, including buildings, blocks of buildings, and urban logistics |
2 |
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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