This selection of large organizations in Île-de-France includes several higher education and research institutions. Among them are École Polytechnique, which conducts research and academic programs in science and technology, and Inria, focused on digital technology research and Deeptech startups. HEC Paris offers a range of management education programs, while CentraleSupélec provides higher education in engineering across multiple campuses. The list also features government bodies like CCI Paris IdF, which represents businesses and promotes the capital region, and IGN - French Mapping Agency, the state's geospatial information provider. A notable pattern is the strong presence of public and semi-public institutions dedicated to education, research, and public services within the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
École Polytechniquepolytechnique.edu
Leading French institution offering top-level research, academic programs, and innovation in science and technology with a strong emphasis on excellence and humanist traditions |
4,377 | |||
| 2 | 3,832 | ||||
| 3 | 2,765 | ||||
| 4 |
CentraleSupéleccentralesupelec.fr
Provides higher education with 4,500 students across three campuses, 370 staff, 3 international schools, 5 associated labs, and partners with 176 universities and 140 companies. |
2,125 | |||
| 5 |
CCI Paris IdFcci-paris-idf.fr
Represents 840,000 businesses, fostering growth, training individuals, developing projects, and promoting the capital region across 8 departments. |
2,052 | |||
| 6 |
Barreau de Paris (Ordre des avocats de Paris)avocatparis.org
Provides legal assistance, promotes human rights, ensures access to law through free consultations, and supports economic development through professional lawyer training and regulation. |
1,614 | |||
| 7 |
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 | |||
| 8 | 1,133 | ||||
| 9 |
Télécom Paristelecom-paris.fr
A leading educational institution in ICT, offering various programs in engineering, masters, and PhD, with a focus on innovation and entrepreneurship in the digital world |
953 | |||
| 10 |
EPITA: Ecole d'Ingénieurs en Informatiqueepita.fr
Training bold individuals in IT and digital innovation to drive societal success, transforming daily lives, and addressing major technological, industrial, economic, and social challenges. |
846 | |||
| 11 |
Institut du Cerveau – Paris Brain Instituteinstitutducerveau.org
Research center focused on brain studies, developing treatments for neurological diseases through collaboration among patients, doctors, researchers, and entrepreneurs. |
806 | |||
| 12 |
ENGIE Research & Innovationinnovation.engie.com
An innovation-focused company seeking collaborations with startups in Biogas, Energy communities, Energy efficiency, Hydrogen, and Energy storage projects |
686 | |||
| 13 |
SINGAwearesinga.org
An international organization founded in 2012 that accelerates the inclusion of newcomers to create cohesive, creative, and prosperous societies |
640 | |||
| 14 |
Communauté d'agglomération de Saint-Quentin-en-Yvelinessaint-quentin-en-yvelines.fr
Intercommunal cooperation entity providing services to municipalities and their 147,000 residents, specific to new towns, fostering community development. |
567 | |||
| 15 |
INCOinco-group.co
Global organization promoting environmental sustainability and social responsibility through supporting innovative companies and empowering diverse individuals to reach their full potential |
535 | |||
| 16 |
ESPCI Paris - PSLespci.psl.eu
An engineering school in Paris training adaptable engineers with a strong theoretical and experimental background who contribute to societal issues through research and innovation |
509 | |||
| 17 |
Semmaris, Rungis International Marketrungisinternational.com
Management and development of Rungis Market including real estate, buyer services, security, marketing, and consulting for wholesale projects. |
500 | |||
| 18 |
Institut Français de la Modeifmparis.fr
Higher education and training in fashion design, management, craftsmanship, research, and industry expertise for textiles, fashion, and luxury sectors. |
462 | |||
| 19 |
Pépite France - Le réseau des Étudiants-Entrepreneurspepite-france.fr
Pépite France supports student entrepreneurship by connecting projects with businesses and providing resources such as the Student-Entrepreneur National Status for young innovators |
452 | |||
| 20 |
beta.gouv.frbeta.gouv.fr
French government incubator building digital public services through small autonomous teams known as state startups focused on simplicity, trust, and changing rules. |
400 | |||
| 21 |
LiveMentorlinktr.ee
Distance learning organization providing three-month mentorship programs focused on essential business skills like sales, marketing, and finance for small scale business development. |
335 | |||
| 22 |
Marblemarble.studio
A climate tech venture studio creating startups to reduce emissions, remove carbon, and address the climate crisis with breakthrough technology |
330 | |||
| 23 |
Réseau Entreprendre Parisreseau-entreprendre.org
An association supporting entrepreneurs in Paris by offering human and financial assistance, led by experienced business owners to foster job creation and responsible entrepreneurship |
317 | |||
| 24 |
STATION Fstationf.co
The world's largest startup campus in Paris, bringing together an entire entrepreneurial ecosystem in one place |
297 | |||
| 25 |
Les Déterminéslesdetermines.fr
Support and train entrepreneurs from priority urban and rural areas through training, networking, and fostering a proactive entrepreneurial mindset. |
296 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 26 |
50 Partners50partners.fr
A leading startup accelerator in France providing selected startups with mentoring, financing, connections, networking, and office space in Paris |
270 | |||
| 27 |
Positive Planetpositiv.ngo
This company helps create economically, socially, and ecologically sustainable businesses through positive entrepreneurship, financial education, and support for small producers, fighting poverty and exclusion |
222 | |||
| 28 |
WILCO
Accelerates tech startups and corporate innovation through structured KPI-driven coaching, non-dilutive financing, and strategic networking within industry, healthcare, and digital sectors for international growth. |
202 | |||
| 29 |
La Ruche®️la-ruche.net
Provides training, support, advice, and workspace across France to promote sustainable entrepreneurship, inclusion, and gender equality. |
200 | |||
| 30 |
makesensemakesense.org
Works with companies, institutions, and associations to become more sustainable, engaged, and resilient through defining purpose, engaging employees, fostering innovation, and connecting ecosystems. |
183 | |||
| 31 |
IONIS Education Groupionis-group.com
Leading private higher education group in France, with 29 schools across multiple disciplines, focusing on training future business leaders for tomorrow's economy |
179 | |||
| 32 |
EIT Manufacturingeitmanufacturing.eu
Supports innovation and ecosystems in manufacturing by promoting talent, entrepreneurship, green growth, and competitiveness across Europe. |
178 | |||
| 33 |
Live for Goodlive-for-good.org
Support young entrepreneurs developing innovative projects focused on ecology, inclusion, health, and education for positive social impact. |
159 | |||
| 34 | 158 | ||||
| 35 |
21 | Croix-Rouge française21-croix-rouge.fr
Platform providing resources and actors to enable impactful social innovation solutions addressing community and societal challenges effectively. |
128 | |||
| 36 |
Paris&Coparisandco.com
Economic development and innovation agency in Paris, focusing on incubation, international attractiveness, experimentation, open innovation, and event organization for startups and key accounts |
126 | |||
| 37 | 120 | ||||
| 38 |
Cap Digitalcapdigital.com
Non-profit cluster promoting digital content, creative industries, supporting SMEs, fostering R&D, international growth, and European partnerships. |
114 | |||
| 39 |
Hello Tomorrowhello-tomorrow.org
Built global ecosystem facilitating deep tech innovation, connecting key players, identifying trends, and supporting solution implementation to solve global crises. |
110 | |||
| 40 |
Genopolegenopole.fr
The company specializes in developing a research campus, supporting biotech startups, and creating a biopark in collaboration with a university |
105 | |||
| 41 | 101 | ||||
| 42 |
Finance Innovationfinance-innovation.org
Support startups and major groups in financial sector innovation, fostering partnerships, competitiveness, and sustainable digital transformation in finance. |
96 | |||
| 43 |
The Independentsthe-independents.com
Crafts extraordinary brand experiences, creating meaningful connections between people and brands across luxury and lifestyle industries globally with partner agencies. |
80 | |||
| 44 |
LA CASERNElacaserneparis.com
An innovative space in Paris dedicated to promoting responsible fashion, fostering connections between creators and the public, and hosting cultural events |
74 | |||
| 45 | 73 | ||||
| 46 |
Fisheyefisheyemanufacture.com
Publishing contemporary photography magazines, operating photography and high-tech media, running a gallery, VR video studio, and image communication agency. |
67 | |||
| 47 |
PULSE GROUPpulse-group.org
Supporting entrepreneurship for inclusive and sustainable development through 28 programs across 18 countries, incubators in Africa and Europe, and tailored support for 550+ entrepreneurs annually |
63 | |||
| 48 |
Matricematrice.io
An innovative center focused on technological and social innovation, providing training, incubation, research, and artistic residence to projects for a more just and sustainable world |
61 | |||
| 49 |
Systematic Paris-Regionsystematic-paris-region.org
Community of 900 members focused on Deep Tech, accelerating digital transformation in industry, services, and society through collaborative innovation. |
59 | |||
| 50 | 58 | ||||
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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 Nov 12, 2026.
More company lists in Île-de-France
- The largest companies in Île-de-France 36,142
- Multinational companies in Île-de-France 6,028
- Professional services firms in Île-de-France 3,377
- SaaS companies in Île-de-France 2,859
- IT Services and IT Consulting companies in Île-de-France 2,776
- Companies with in-house R&D in Île-de-France 2,695
- IT services companies in Île-de-France 2,624
- Consulting firms in Île-de-France 2,408
- Retail chains in Île-de-France 2,316
- Software Development companies in Île-de-France 1,992
- Business Consulting and Services companies in Île-de-France 1,904
- Financial services firms in Île-de-France 1,731
- Manufacturers in Île-de-France 1,515
- Law Practice companies in Île-de-France 1,366
- Subscription businesses in Île-de-France 1,359
- Education providers in Île-de-France 1,300
- Advertising Services companies in Île-de-France 1,264
- Financial Services companies in Île-de-France 1,197
- Marketing and communications agencies in Île-de-France 1,174
- Hardware manufacturers in Île-de-France 1,142
- Companies with a mobile app in Île-de-France 1,105
- Recruitment and staffing agencies in Île-de-France 1,014
- Public sector organisations in Île-de-France 993
- Technology, Information and Internet companies in Île-de-France 982
The same list elsewhere in France
- Startup incubators and accelerators in France 414
- Startup incubators and accelerators in Auvergne-Rhône-Alpes 42
- Startup incubators and accelerators in Nouvelle-Aquitaine 33
- Startup incubators and accelerators in Provence-Alpes-Côte d'Azur 31
- Startup incubators and accelerators in Occitanie 28
- Startup incubators and accelerators in Grand Est 27
- Startup incubators and accelerators in Paris 138