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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).

🇫🇷 Hauts-de-Seine30 companiesUpdated Nov 12, 2026

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. Université 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.

#CompanyIndustryHeadquarters EmployeesFounded
1
Gendarmerie Nationalelinktr.ee

A military institution ensuring security and peace, protecting citizens and their property, conducting judicial police, assisting people, and maintaining order

Security and Investigations 🇫🇷 Issy-les-Moulineaux 33,955 n/a
2
Enedisenedis.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 🇫🇷 Puteaux 24,479 n/a
3
Oranoorano.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 🇫🇷 Châtillon 12,605 2018
4
ARTEarte.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 🇫🇷 Issy-les-Moulineaux 4,761 1990
5
Université Paris Nanterreparisnanterre.fr

Multidisciplinary higher education and research institution in Paris, covering humanities, social sciences, law, economics, management, technology, arts, and communication.

Higher Education 🇫🇷 Nanterre 3,925 1964
6
France Medias Mondefrancemediasmonde.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 🇫🇷 Issy-les-Moulineaux 3,371 2008
7
Inseeinsee.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 🇫🇷 Montrouge 2,900 1946
8
ADEMEademe.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 🇫🇷 Montrouge 1,839 1990
9
IRSNirsn.fr

An expert in nuclear and radiological risks, specializing in environmental monitoring, human radiation protection, reactor safety, and nuclear defense expertise

Research Services 🇫🇷 Fontenay-aux-Roses 1,500 2002
10
FRANCE 24france24.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 🇫🇷 Issy-les-Moulineaux 1,500 2006
11
IFP Schoolifp-school.com

Graduate engineering school specializing in energy, sustainable mobility, motorization, economy, processes, and energy transition technologies and solutions.

Higher Education 🇫🇷 Rueil-Malmaison 1,339 1954
12
Radio France Internationalerfi.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 🇫🇷 Issy-les-Moulineaux 1,254 1975
13
ASNR - Autorité de sûreté nucléaire et de radioprotectionasnr.fr

Independent authority controlling civilian nuclear activities and radiation protection in France, including research, expertise, training, and public information.

Government Administration 🇫🇷 Montrouge 1,168 2025
14
France Éducation internationalfrance-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 🇫🇷 Sèvres 1,133 1945
15
EPIDE Défense 2e Chanceepide.fr

Support young people aged 18 to 25 without diplomas or qualifications, helping them reintegrate into employment and society.

Government Administration 🇫🇷 Malakoff 1,089 2005

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16
CDC Informatiqueicdc.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 🇫🇷 Bagneux 1,049 1959
17
Ville de Boulogne-Billancourtlinktr.ee

City administration managing diverse urban functions, heritage preservation, economic development, residential variety, commercial balance, and cultural influence for residents.

Government Administration 🇫🇷 Boulogne-Billancourt 805 1926
18
Andraandra.fr

Management and storage of radioactive waste in France, ensuring environmental and human protection through sustainable long-term solutions.

Environmental Services 🇫🇷 Châtenay-Malabry 781 1991
19
CCI Francecci.fr

Federation of French Chambers of Commerce supporting 2 million companies with economic intelligence, development, education, and environmental sustainability coordination.

Government Administration 🇫🇷 Levallois-Perret 713 1964
20
INPI Franceinpi.fr

The company is a key player in innovation, granting industrial property titles, supporting economic development, facilitating business formalities, and fighting counterfeiting

Government Administration 🇫🇷 Courbevoie 710 1951
21
Ville de Colombescolombes.fr

Provides information about actions carried out by local administration, focusing on administrative activities without political or official content.

Government Administration 🇫🇷 Colombes 702 1160
22
Ville de Rueil-Malmaisonvillederueil.fr

City administration focused on quality living, balanced urban development, economic growth, commercial diversity, and active participation in regional metropolitan governance.

Government Administration 🇫🇷 Rueil-Malmaison 622 n/a
23
Ville de Clichy-la-Garenneville-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 🇫🇷 Clichy 617 n/a
24
Ville de Courbevoieville-courbevoie.fr

Dynamic city in the Paris Ouest La Défense area, Courbevoie offers services and support to its 80,000 residents through a wide range of programs and facilities

Government Administration 🇫🇷 Courbevoie 576 1980
25
Centre Hospitalier des Quatre Villes - CH4Vch4v.fr

Public healthcare facility with 598 beds, formed by merging two hospitals, employing 1,200 staff to provide medical services.

Hospitals and Health Care 🇫🇷 Saint-Cloud 501 2006
26
Ville de Suresnessuresnes.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 🇫🇷 Suresnes 367 n/a
27
HAUTS-DE-SEINE HABITAT - OPHhautsdeseinehabitat.fr

Management of social housing with focus on tenant service quality, sustainability, innovation, and operational excellence across 42,000 homes.

Real Estate 🇫🇷 Levallois-Perret 358 1969
28
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 🇫🇷 Courbevoie 354 2011
29
Tribunal judiciaire de Nanterrecours-appel.justice.fr

Company providing jurisdiction for legal cases in the altoséquanais region, as part of the Versailles court of appeal

Courts of Law 🇫🇷 Nanterre 351 n/a
30
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 🇫🇷 Meudon 349 2010

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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.

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