# Top 30 public sector organisations in the Hauts-de-Seine department
Tamtam tracks 96 public sector organisations headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Gendarmerie Nationale, Enedis and Orano. Their median headcount is 1,089. Half of them were founded in 1990 or later. The most common headquarters are Issy-les-Moulineaux (5), Courbevoie (3) and Montrouge (3).
These public sector organizations in Hauts-de-Seine are primarily large institutions, many focused on public services, media, and education. Noteworthy entities include Gendarmerie Nationale, a military institution ensuring security, and Enedis, which manages the electricity distribution network. Orano operates in nuclear materials, while ARTE is a European cultural channel. Universit茅 Paris Nanterre is a multidisciplinary higher education institution, and France Medias Monde broadcasts news globally.
A significant pattern among these organizations is the concentration of headquarters in specific cities within Hauts-de-Seine. Issy-les-Moulineaux hosts several broadcast media entities like ARTE, France Medias Monde, FRANCE 24, and Radio France Internationale, indicating a cluster of media-related public bodies in that area.
馃嚝馃嚪 Hauts-de-Seine 路 30 companies 路 Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Gendarmerie Nationale](https://www.tamtam.ai/c/gendarmerie-nationale) (linktr.ee)
A military institution ensuring security and peace, protecting citizens and their property, conducting judicial police, assisting people, and maintaining order | Security and Investigations | 馃嚝馃嚪 Issy-les-Moulineaux | 33,955 | |
| 2 | [Enedis](https://www.tamtam.ai/c/enedis) (enedis.fr)
They manage the public electricity distribution network across most of France, with nearly 39,000 employees maintaining and expanding the 13 million km network | Utilities | 馃嚝馃嚪 Puteaux | 24,479 | |
| 3 | [Orano](https://www.tamtam.ai/c/orano) (orano.group)
International operator in nuclear materials, provides high-value products and services across the entire fuel cycle, addressing energy and health challenges through expertise and innovation. | Nuclear Electric Power Generation | 馃嚝馃嚪 Ch芒tillon | 12,605 | 2018 |
| 4 | [ARTE](https://www.tamtam.ai/c/arte) (arte.tv)
A European cultural channel offering a variety of programs on cinema, fiction, documentaries, concerts, news, and cultural magazines in six languages | Broadcast Media Production and Distribution | 馃嚝馃嚪 Issy-les-Moulineaux | 4,761 | 1990 |
| 5 | [Universit茅 Paris Nanterre](https://www.tamtam.ai/c/universite-paris-nanterre) (parisnanterre.fr)
Multidisciplinary higher education and research institution in Paris, covering humanities, social sciences, law, economics, management, technology, arts, and communication. | Higher Education | 馃嚝馃嚪 Nanterre | 3,925 | 1964 |
| 6 | [France Medias Monde](https://www.tamtam.ai/c/france-medias-monde) (francemediasmonde.com)
Global media group based in Paris, broadcasting news in 15 languages through France 24, RFI, and Monte Carlo Doualiya, reaching millions worldwide | Broadcast Media Production and Distribution | 馃嚝馃嚪 Issy-les-Moulineaux | 3,371 | 2008 |
| 7 | [Insee](https://www.tamtam.ai/c/insee) (insee.fr)
Collects information, produces statistics on French economy, population, society. Conducts census, surveys, manages national registries, and provides data freely to the public. | Government Administration | 馃嚝馃嚪 Montrouge | 2,900 | 1946 |
| 8 | [ADEME](https://www.tamtam.ai/c/ademe) (ademe.fr)
A public agency supporting environmental, energy, and sustainable development policies, providing expertise and funding for projects in waste management, renewable energies, and more | Environmental Services | 馃嚝馃嚪 Montrouge | 1,839 | 1990 |
| 9 | [IRSN](https://www.tamtam.ai/c/irsn) (irsn.fr)
An expert in nuclear and radiological risks, specializing in environmental monitoring, human radiation protection, reactor safety, and nuclear defense expertise | Research Services | 馃嚝馃嚪 Fontenay-aux-Roses | 1,500 | 2002 |
| 10 | [FRANCE 24](https://www.tamtam.ai/c/france-24) (france24.com)
International news channel offering a French perspective on current events, broadcasting in French, English, and Arabic, emphasizing diverse opinions and in-depth analysis. | Broadcast Media Production and Distribution | 馃嚝馃嚪 Issy-les-Moulineaux | 1,500 | 2006 |
| 11 | [IFP School](https://www.tamtam.ai/c/ifp-school) (ifp-school.com)
Graduate engineering school specializing in energy, sustainable mobility, motorization, economy, processes, and energy transition technologies and solutions. | Higher Education | 馃嚝馃嚪 Rueil-Malmaison | 1,339 | 1954 |
| 12 | [Radio France Internationale](https://www.tamtam.ai/c/radio-france-internationale) (rfi.fr)
Global public radio station broadcasting news and current affairs in multiple languages through FM, satellite, internet, and partner radios worldwide. | Broadcast Media Production and Distribution | 馃嚝馃嚪 Issy-les-Moulineaux | 1,254 | 1975 |
| 13 | [ASNR - Autorit茅 de s没ret茅 nucl茅aire et de radioprotection](https://www.tamtam.ai/c/asnr-autorite-de-surete-nucleaire-et-de-radioprotection) (asnr.fr)
Independent authority controlling civilian nuclear activities and radiation protection in France, including research, expertise, training, and public information. | Government Administration | 馃嚝馃嚪 Montrouge | 1,168 | 2025 |
| 14 | [France 脡ducation international](https://www.tamtam.ai/c/france-education-international) (france-education-international.fr)
Public institution under Education Ministry, specializing in educational expertise, training, evaluation, and international cooperation to promote French education abroad. | Education Administration Programs | 馃嚝馃嚪 S猫vres | 1,133 | 1945 |
| 15 | [EPIDE D茅fense 2e Chance](https://www.tamtam.ai/c/epide-defense-2e-chance) (epide.fr)
Support young people aged 18 to 25 without diplomas or qualifications, helping them reintegrate into employment and society. | Government Administration | 馃嚝馃嚪 Malakoff | 1,089 | 2005 |
| 16 | [CDC Informatique](https://www.tamtam.ai/c/cdc-informatique) (icdc.caissedesdepots.fr)
Provides IT solutions, guarantees security and integrity for public sector clients. Technological competence and innovation are key, anticipating and supporting digital changes. | IT Services and IT Consulting | 馃嚝馃嚪 Bagneux | 1,049 | 1959 |
| 17 | [Ville de Boulogne-Billancourt](https://www.tamtam.ai/c/ville-de-boulogne-billancourt) (linktr.ee)
City administration managing diverse urban functions, heritage preservation, economic development, residential variety, commercial balance, and cultural influence for residents. | Government Administration | 馃嚝馃嚪 Boulogne-Billancourt | 805 | 1926 |
| 18 | [Andra](https://www.tamtam.ai/c/andra-chatenay-malabry) (andra.fr)
Management and storage of radioactive waste in France, ensuring environmental and human protection through sustainable long-term solutions. | Environmental Services | 馃嚝馃嚪 Ch芒tenay-Malabry | 781 | 1991 |
| 19 | [CCI France](https://www.tamtam.ai/c/cci-france) (cci.fr)
Federation of French Chambers of Commerce supporting 2 million companies with economic intelligence, development, education, and environmental sustainability coordination. | Government Administration | 馃嚝馃嚪 Levallois-Perret | 713 | 1964 |
| 20 | [INPI France](https://www.tamtam.ai/c/inpi-france) (inpi.fr)
The company is a key player in innovation, granting industrial property titles, supporting economic development, facilitating business formalities, and fighting counterfeiting | Government Administration | 馃嚝馃嚪 Courbevoie | 710 | 1951 |
| 21 | [Ville de Colombes](https://www.tamtam.ai/c/ville-de-colombes) (colombes.fr)
Provides information about actions carried out by local administration, focusing on administrative activities without political or official content. | Government Administration | 馃嚝馃嚪 Colombes | 702 | 1160 |
| 22 | [Ville de Rueil-Malmaison](https://www.tamtam.ai/c/ville-de-rueil-malmaison) (villederueil.fr)
City administration focused on quality living, balanced urban development, economic growth, commercial diversity, and active participation in regional metropolitan governance. | Government Administration | 馃嚝馃嚪 Rueil-Malmaison | 622 | |
| 23 | [Ville de Clichy-la-Garenne](https://www.tamtam.ai/c/ville-de-clichy-la-garenne) (ville-clichy.fr)
Manages a Parisian suburb, providing services to residents and businesses, fostering economic growth, and developing urban projects with a focus on sustainability and quality of life. | Government Relations Services | 馃嚝馃嚪 Clichy | 617 | |
| 24 | [Ville de Courbevoie](https://www.tamtam.ai/c/ville-de-courbevoie) (ville-courbevoie.fr)
Dynamic city in the Paris Ouest La D茅fense area, Courbevoie offers services and support to its 80,000 residents through a wide range of programs and facilities | Government Administration | 馃嚝馃嚪 Courbevoie | 576 | 1980 |
| 25 | [Centre Hospitalier des Quatre Villes - CH4V](https://www.tamtam.ai/c/centre-hospitalier-des-quatre-villes-ch4v) (ch4v.fr)
Public healthcare facility with 598 beds, formed by merging two hospitals, employing 1,200 staff to provide medical services. | Hospitals and Health Care | 馃嚝馃嚪 Saint-Cloud | 501 | 2006 |
| 26 | [Ville de Suresnes](https://www.tamtam.ai/c/ville-de-suresnes) (suresnes.fr)
Dynamic green Parisian suburb, fostering economic growth across diverse sectors like health and technology, offering cultural events and local services to residents. | Government Administration | 馃嚝馃嚪 Suresnes | 367 | |
| 27 | [HAUTS-DE-SEINE HABITAT - OPH](https://www.tamtam.ai/c/hauts-de-seine-habitat-oph) (hautsdeseinehabitat.fr)
Management of social housing with focus on tenant service quality, sustainability, innovation, and operational excellence across 42,000 homes. | Real Estate | 馃嚝馃嚪 Levallois-Perret | 358 | 1969 |
| 28 | [European Banking Authority (EBA)](https://www.tamtam.ai/c/european-banking-authority-eba) (eba.europa.eu)
Contributes to financial system stability, effective regulation and supervision through banking rulebook development, risk assessment, and oversight of digital finance. | Financial Services | 馃嚝馃嚪 Courbevoie | 354 | 2011 |
| 29 | [Tribunal judiciaire de Nanterre](https://www.tamtam.ai/c/tribunal-judiciaire-de-nanterre) (cours-appel.justice.fr)
Company providing jurisdiction for legal cases in the altos茅quanais region, as part of the Versailles court of appeal | Courts of Law | 馃嚝馃嚪 Nanterre | 351 | |
| 30 | [Grand Paris Seine Ouest (GPSO)](https://www.tamtam.ai/c/grand-paris-seine-ouest-gpso) (seineouest.fr)
An establishment managing economic development, urban planning, social housing, environment protection, and cultural & sports facilities in 8 cities | Government Administration | 馃嚝馃嚪 Meudon | 349 | 2010 |
## 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 the Hauts-de-Seine department
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
- [IT Services and IT Consulting companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-hauts-de-seine) (706)
- [Professional services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/professional-services-firms-hauts-de-seine) (629)
- [Consulting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/consulting-firms-hauts-de-seine) (563)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [SaaS companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/saas-companies-hauts-de-seine) (389)
- [Business Consulting and Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/business-consulting-and-services-companies-hauts-de-seine) (304)
- [Software Development companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/software-development-companies-hauts-de-seine) (301)
- [Retail chains in the Hauts-de-Seine department](https://www.tamtam.ai/l/retail-chains-hauts-de-seine) (292)
- [Manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/manufacturers-hauts-de-seine) (285)
- [Advertising Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/advertising-services-companies-hauts-de-seine) (281)
- [Marketing and communications agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/marketing-agencies-hauts-de-seine) (235)
- [Subscription businesses in the Hauts-de-Seine department](https://www.tamtam.ai/l/subscription-businesses-hauts-de-seine) (228)
- [Hardware manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/hardware-companies-hauts-de-seine) (199)
- [Financial services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/financial-services-firms-hauts-de-seine) (198)
- [Companies with a mobile app in the Hauts-de-Seine department](https://www.tamtam.ai/l/companies-with-mobile-app-hauts-de-seine) (189)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
- [AI companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/ai-companies-hauts-de-seine) (159)
- [Education providers in the Hauts-de-Seine department](https://www.tamtam.ai/l/education-companies-hauts-de-seine) (159)
- [Cybersecurity companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/cybersecurity-companies-hauts-de-seine) (154)
- [Distributors and wholesalers in the Hauts-de-Seine department](https://www.tamtam.ai/l/distributors-and-wholesalers-hauts-de-seine) (154)
- [Recruitment and staffing agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/recruitment-agencies-hauts-de-seine) (152)
## The same list elsewhere in France
- [Public sector organisations in France](https://www.tamtam.ai/l/public-sector-organisations-france) (4,006)
- [Public sector organisations in 脦le-de-France](https://www.tamtam.ai/l/public-sector-organisations-ile-de-france) (993)
- [Public sector organisations in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/public-sector-organisations-auvergne-rhone-alpes) (451)
- [Public sector organisations in Grand Est](https://www.tamtam.ai/l/public-sector-organisations-grand-est) (427)
- [Public sector organisations in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/public-sector-organisations-provence-alpes-cote-dazur) (384)
- [Public sector organisations in Occitanie](https://www.tamtam.ai/l/public-sector-organisations-occitanie) (317)
- [Public sector organisations in Nouvelle-Aquitaine](https://www.tamtam.ai/l/public-sector-organisations-nouvelle-aquitaine) (310)
- [Public sector organisations in Hauts-de-France](https://www.tamtam.ai/l/public-sector-organisations-hauts-de-france) (261)
- [Public sector organisations in Pays de la Loire](https://www.tamtam.ai/l/public-sector-organisations-pays-de-la-loire) (185)
- [Public sector organisations in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/public-sector-organisations-bouches-du-rhone) (183)
- [Public sector organisations in Normandy](https://www.tamtam.ai/l/public-sector-organisations-normandy) (166)
- [Public sector organisations in Brittany](https://www.tamtam.ai/l/public-sector-organisations-brittany) (165)
- [Public sector organisations in the Nord department](https://www.tamtam.ai/l/public-sector-organisations-nord) (135)
- [Public sector organisations in Bourgogne-Franche-Comt茅](https://www.tamtam.ai/l/public-sector-organisations-bourgogne-franche-comte) (130)
- [Public sector organisations in Centre-Val de Loire](https://www.tamtam.ai/l/public-sector-organisations-centre-val-de-loire) (121)
- [Public sector organisations in the Rh么ne department](https://www.tamtam.ai/l/public-sector-organisations-rhone) (120)
- [Public sector organisations in the Haute-Garonne department](https://www.tamtam.ai/l/public-sector-organisations-haute-garonne) (111)
- [Public sector organisations in the Gironde department](https://www.tamtam.ai/l/public-sector-organisations-gironde) (109)
- [Public sector organisations in the Seine-Saint-Denis department](https://www.tamtam.ai/l/public-sector-organisations-seine-saint-denis) (91)
- [Public sector organisations in the Is猫re department](https://www.tamtam.ai/l/public-sector-organisations-isere) (80)
- [Public sector organisations in the Loire-Atlantique department](https://www.tamtam.ai/l/public-sector-organisations-loire-atlantique) (80)
- [Public sector organisations in Paris](https://www.tamtam.ai/l/public-sector-organisations-paris) (460)
- [Public sector organisations in Marseille](https://www.tamtam.ai/l/public-sector-organisations-marseille) (103)
- [Public sector organisations in Toulouse](https://www.tamtam.ai/l/public-sector-organisations-toulouse) (83)
## The same list elsewhere
- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Public sector organisations in Europe](https://www.tamtam.ai/l/public-sector-organisations-in-europe) (8,568)
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Source: https://www.tamtam.ai/l/public-sector-organisations-hauts-de-seine