These telecommunications companies in Hauts-de-Seine largely represent established firms and mid-sized enterprises. Orange is a global operator offering services across 26 countries, while SAGEMCOM provides innovative broadband internet and entertainment solutions. Alcatel-Lucent Enterprise focuses on secure networking and communication solutions, and La Poste Mobile offers affordable mobile telecom services.
The data shows a concentration of companies in specific towns within Hauts-de-Seine. Issy-les-Moulineaux hosts Orange, Sogetrel, and Eutelsat. Bois-Colombes is home to SAGEMCOM and Paritel, while Courbevoie includes SFR DISTRIBUTION and TRANSATEL. This suggests a clustering of telecommunications activity in these areas.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Orangeorange.com
A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries |
146,935 | |||
| 2 |
SAGEMCOMsagemcom.com
Provides innovative broadband internet, entertainment, and managed energy solutions. Designs sustainable technology, leader in its markets, with employee ownership. |
5,279 | |||
| 3 |
Alcatel-Lucent Enterpriseal-enterprise.com
Provides secure networking and communication solutions with built-in security, environmental focus, and compliance for organizations worldwide. |
4,055 | |||
| 4 |
La Poste Mobilelapostemobile.fr
Provides affordable mobile telecom services with low-cost plans, accessible devices, extensive customer support, and promotes responsible digital usage for all ages. |
3,619 | |||
| 5 |
Sogetrelsogetrel.fr
A leader in digital transformation, specializing in digital infrastructure services and connected devices to enhance citizens' lives, business performance, and sustainable development |
2,581 | |||
| 6 |
Axioneaxione.com
A leading player in public network initiatives, specializing in telecommunications infrastructure deployment, operation, financing, and asset management for rural and urban areas |
2,488 | |||
| 7 |
Eutelsateutelsat.com
Delivers connectivity and broadcast services worldwide. Operates a global fleet of 37 Geostationary satellites and over 600 Low Orbit earth satellites for diverse markets. |
1,755 | |||
| 8 | 1,741 | ||||
| 9 |
SADE TΓ©lΓ©comensio.eu
Specialized teams deploy digital and energy networks, offering turnkey solutions, services, and maintenance with sustainable and safe practices. |
1,063 | |||
| 10 |
SFR DISTRIBUTION
National retail subsidiary managing three hundred points of sale and two thousand employees providing telecommunication services, products, and customer support across France. |
574 | |||
| 11 |
Paritelparitel.fr
Paritel, a telecom operator for small businesses, prioritizes performance and individual talent while fostering teamwork and career development for its 700 employees |
501 | |||
| 12 | 463 | ||||
| 13 |
Itanciaitancia.com
Provides eco-responsible business communication, collaboration, network, and security solutions. Supports partners in adopting responsible practices, balancing technology, economy, and ecology through distribution, services, and product lifecycle management. |
395 | |||
| 14 | 337 | ||||
| 15 |
TRANSATEL (an NTT company)transatel.com
Innovative cellular connectivity solutions provider enabling global IoT connectivity for industries and travelers, part of NTT group with 330,000 employees worldwide |
322 | |||
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. | |||||
| 16 |
TOTEMtotemtowers.com
TOTEM is a TowerCo company offering infrastructure and connectivity solutions in France and Spain, focusing on towers and Distributed Antenna Solutions |
278 | |||
| 17 |
XpFibrexpfibre.com
Design, construction, and operation of optical fiber networks across France, maintaining over seven million connections for local communities through private and public partnerships. |
263 | |||
| 18 |
TISSEO SERVICESrecrutement.tisseo-services.fr
Specializes in FTTH fiber optic connection and repair services for Bouygues Telecom customers, emphasizing employee value and company growth. |
246 | |||
| 19 |
Thomson Telecommythomson.com
Development, design, and delivery of telecommunication products and services for residential and business markets worldwide, focusing on quality and innovation. |
243 | |||
| 20 |
Cellnex Francecellnex.com
Operating and maintaining mobile towers, fiber optic networks, and data centers for telecommunications operators and organizations requiring large-scale digital connectivity and hosting services. |
240 | |||
| 21 |
Prosodie-Capgemini
This company focuses on customer relations and offers a variety of content such as customer experience, articles, and job opportunities |
233 | |||
| 22 |
eServGlobalseamless.se
SDS provides software platforms for digital sales and distribution to mobile users in over 50 markets, processing billions of transactions annually |
230 | |||
| 23 |
Viaccess-Orcaviaccess-orca.com
Provides premium TV platforms, OTT, and content protection globally, delivering, protecting, and monetizing advanced TV services for operators, broadcasters, and content providers. |
226 | |||
| 24 |
Eurofiber France
Provides extensive fiber optic network and innovative, secure cloud hosting solutions to support business digital transformation and connectivity needs. |
161 | |||
| 25 |
Alleo de Bouygues Telecomalleo.fr
Provides IT and telecom solutions including cybersecurity, VoIP integration, managed services, and local customer support with certified professionals. |
144 | |||
| 26 |
Vitrinemediavitrinemedia.com
Design and retail of innovative, ultra-thin LED display panels with various formats and colors for window merchandising worldwide. |
140 | |||
| 27 | 136 | ||||
| 28 |
THOMSON BROADCASTthomsonbroadcast.tv
A trusted pioneer in broadcasting technology, specializing in transmission products for terrestrial TV and radio with world-class systems integration services and a global support presence |
100 | |||
| 29 |
innov8 Groupinnov8.fr
Organizes the adoption of disruptive technology by distributing consumer connected products, renewable energy solutions, and advanced robotics across Europe. |
93 | |||
| 30 |
Bouygues Telecom Business β Distributionbtbd.fr
Provides telecom services to over 2 million clients through various distribution channels, emphasizing human values and entrepreneurial spirit in a dynamic sector. |
90 | |||
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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 5,160
- Multinational companies in the Hauts-de-Seine department 1,231
- IT services companies in the Hauts-de-Seine department 737
- IT Services and IT Consulting companies in the Hauts-de-Seine department 706
- Professional services firms in the Hauts-de-Seine department 629
- Consulting firms in the Hauts-de-Seine department 563
- Companies with in-house R&D in the Hauts-de-Seine department 510
- SaaS companies in the Hauts-de-Seine department 389
- Business Consulting and Services companies in the Hauts-de-Seine department 304
- Software Development companies in the Hauts-de-Seine department 301
- Retail chains in the Hauts-de-Seine department 292
- Manufacturers in the Hauts-de-Seine department 285
- Advertising Services companies in the Hauts-de-Seine department 281
- Marketing and communications agencies in the Hauts-de-Seine department 235
- Subscription businesses in the Hauts-de-Seine department 228
- Hardware manufacturers in the Hauts-de-Seine department 199
- Financial services firms in the Hauts-de-Seine department 198
- Companies with a mobile app in the Hauts-de-Seine department 189
- Critical infrastructure operators in the Hauts-de-Seine department 169
- AI companies in the Hauts-de-Seine department 159
- Education providers in the Hauts-de-Seine department 159
- Cybersecurity companies in the Hauts-de-Seine department 154
- Distributors and wholesalers in the Hauts-de-Seine department 154
- Recruitment and staffing agencies in the Hauts-de-Seine department 152
The same list elsewhere in France
- Telecommunications companies in France 461
- Telecommunications companies in Γle-de-France 210
- Telecommunications companies in Auvergne-RhΓ΄ne-Alpes 49
- Telecommunications companies in Provence-Alpes-CΓ΄te d'Azur 38
- Telecommunications companies in Occitanie 31
- Telecommunications companies in Grand Est 27
- Telecommunications companies in the RhΓ΄ne department 26
- Telecommunications companies in Paris 77