This list covers some of the largest cybersecurity companies in France. The companies are mostly large groups in IT services, telecommunications, and defense, with a strong focus on digital transformation, cloud, and security solutions. These include Capgemini, which delivers end-to-end services, Orange, a global telecommunications operator, Airbus, a pioneer in sustainable aerospace, and Thales, specializing in defense and digital identity. A notable pattern is the concentration of headquarters in the Paris metropolitan area, with many key players located in Paris, Issy-les-Moulineaux, Meudon, and Bezons. This suggests a clustering of major cybersecurity and IT operations around the capital.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Capgeminicapgemini.com
Imagine future organizations, making it real with AI, technology, and people, delivering end-to-end services and solutions across strategy, technology, design, engineering and business operations |
342,989 | |||
| 2 |
Orangeorange.com
A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries |
146,935 | |||
| 3 |
Airbusairbus.com
Pioneers sustainable aerospace, designs and manufactures commercial aircraft, offers space systems, defense, security, and provides civil and military rotorcraft solutions globally. |
88,309 | |||
| 4 | 85,294 | ||||
| 5 |
Thalesthalesgroup.com
Multinational specializing in cybersecurity, defense, aerospace, digital identity, and secure communications for governments and industries. |
65,031 | |||
| 6 |
Sopra Steriasoprasteria.com
Offers consulting, digital services, and solutions, assisting large companies and organizations with digital transformation, improving competitiveness through technology and collaboration. |
47,609 | |||
| 7 |
Orange Businessorange-business.com
Leading European network and digital integrator leveraging expertise in next-generation connectivity, cloud, and cybersecurity solutions for positive impact on customers and planet. |
28,626 | |||
| 8 |
IDEMIAidemia.com
Provides payment, connectivity, cybersecurity, and biometric solutions to financial institutions, mobile operators, and public security organizations globally. |
12,233 | |||
| 9 |
Evideneviden.com
Eviden is a global leader in digital transformation, offering expertise in digital, cloud, data, advanced computing, and security solutions to industries worldwide |
10,793 | |||
| 10 |
SPIE Francespie.fr
Global actor in energy, digital, and industrial transitions, offering concrete solutions for decarbonizing buildings, industries, and territories through various technical services. |
9,833 | |||
| 11 |
Thales Cyber and Digitalthalesgroup.com
Design and deliver digital identification, data protection products, software, and services for secure digital services globally. |
8,199 | |||
| 12 |
Astekastekgroup.fr
Supports clients with high-value service, deep technical expertise across technology, operations, and engineering, focusing on sustainable digital transformation with humans at the core. |
6,035 | |||
| 13 |
Orange Cyberdefenseorangecyberdefense.com
Expert cybersecurity business unit of the Orange Group. They are a leading security provider, striving to build a safer digital society. |
4,274 | |||
| 14 |
SFR Businesssfrbusiness.fr
Provides innovative services supporting company growth and digital transformation. Offers high-performance fixed and mobile connectivity and ICT solutions to businesses and public administrations. |
3,520 | |||
| 15 |
Dekra Francedekra.fr
Inspection, certification, risk management, audits, training, and consulting services for automotive, transport, industry, environment, and safety sectors. |
3,188 | |||
| 16 |
DOCAPOSTEdocaposte.com
Supports companies and public institutions in digital transformation, providing secure, simple digital experiences, processing sensitive data, and ensuring digital independence with regulatory compliance. |
3,076 | |||
| 17 |
Exclusive Networksexclusive-networks.com
Global cybersecurity specialist driving transition to a trusted digital future, offering distribution services with innovative technologies, business models, and worldwide reach |
3,021 | |||
| 18 |
CS GROUPcs-soprasteria.com
Designs, builds, deploys, and maintains critical systems with innovative solutions and products, ensuring operational efficiency and security for client missions. |
2,968 | |||
| 19 | 2,930 | ||||
| 20 |
IN Groupeingroupe.com
Provides identity solutions, secure digital services integrating electronics and biometrics for states, citizens, and businesses, ensuring digital sovereignty. |
1,852 | |||
| 21 |
Airbus Protectairbus.com
A subsidiary of Airbus specializing in cybersecurity, safety, and sustainability services, offering advisory, consulting, training, and software solutions for risk management |
1,614 | |||
| 22 |
Visiativvisiativ.com
Delivers smarter working methods for agility, efficiency, and collaboration. Provides digital tools and practices, driving sustainable performance for businesses through tailored roadmaps. |
1,578 | |||
| 23 |
HeadMind Partnersheadmind.com
Advises major companies on cybersecurity, digital projects, and Artificial Intelligence, with expertise in digital risks. |
1,500 | |||
| 24 |
SCC Francescc.com
Provides comprehensive IT solutions, including cybersecurity, digital workplace, and hybrid infrastructure, enabling businesses to optimize operations and achieve their goals. |
1,422 | |||
| 25 |
SOC LLCsoc-usa.com
Provides global mission support solutions, including security, cyber security, canine services, and base operations for government agencies and Fortune 500 companies worldwide. |
1,407 | |||
| 26 |
RSM Francersm.global
International network providing audit, accounting, and consulting services through eighteen regional locations with over thirteen hundred employees and ninety partners delivering tailored solutions. |
1,398 | |||
| 27 |
SERMA Groupserma.com
An independent, international platform specializing in electronics solutions and services for high-stress environments, offering expertise in 5 core business lines |
1,268 | |||
| 28 | 1,213 | ||||
| 29 |
NXO Francenxo.eu
Independent leader in French Telecom integration, undertaking complex projects, anticipating customer needs, attracting talent, and focusing on well-done work. |
1,200 | |||
| 30 |
Axians Franceaxians.fr
Supports clients with digital infrastructure and solutions, covering applications, data, networks, cloud, telecom, and cybersecurity through consulting, design, integration, and services. |
1,137 | |||
| 31 |
Marlinkmarlink.com
Designs, builds, and manages hybrid network solutions, combining satellite, terrestrial, and digital services to optimize remote business operations with digital technologies. |
1,127 | |||
| 32 | 1,108 | ||||
| 33 | 1,069 | ||||
| 34 |
IDEMIA Public Securityidemia.com
Provides biometric identity platform for public security, offering secure credentials and document authentication for citizens as they interact, pay, connect, and travel. |
1,056 | |||
| 35 |
OWN.Securityown.security
Pure player in cybersecurity, offering auditing, consulting, threat intelligence, incident response, and managed SOC services to organizations of all sizes. |
947 | |||
| 36 |
Nomios Groupnomios.com
Designs, secures, and manages digital infrastructures, developing innovative cybersecurity and networking solutions through consulting, managed, and professional services for organizations. |
887 | |||
| 37 |
ITS Group S.A.itsgroup.com
Supports companies in digital transformation projects, offering turnkey IT solutions and managed services in cloud, mobility, infrastructure, cybersecurity, and data management. |
868 | |||
| 38 |
ANSSI - Agence nationale de la sécurité des systèmes d'informationcyber.gouv.fr
National authority for cybersecurity and cyber defense, protecting the nation from cyberattacks by defending critical systems, sharing knowledge, and regulating cybersecurity. |
867 | |||
| 39 |
SQUAD - Cabinet de conseils et dexpertisessquadgroup.com
Offers cybersecurity consulting and expert services, adapting to evolving IT practices like cloud computing and DevOps for major companies. |
803 | |||
| 40 |
Ledgerledger.com
Develops products and services for individuals and companies to securely buy, store, swap, grow, and manage crypto assets, including hardware wallets. |
796 | |||
| 41 |
OCI Informatiqueoci.fr
OCI is a local IT solutions company for SMEs with 8 branches in the Grand Est region, offering personalized and diverse services including networking, telecom, cloud, and web solutions |
796 | |||
| 42 |
Claranet Franceclaranet.com
Leading European provider of managed hosting, network, and communication services, serving thousands of businesses across multiple countries and data centers. |
750 | |||
| 43 |
QESTIT Groupqestit.com
Specializing in software testing and quality assurance for high demand industries in Europe, with 900+ employees across 7 countries Transforming good software into perfect solutions |
749 | |||
| 44 | 745 | ||||
| 45 |
YesWeHackyeswehack.com
Bug Bounty and Vulnerability Management Platform connecting organizations with ethical hackers for website, app, and infrastructure security, with ISO certifications |
744 | |||
| 46 |
I-TRACINGi-tracing.com
This company offers comprehensive cybersecurity services globally, managing cyber risks, anticipating threats, ensuring system security, and providing rapid incident response to minimize attack consequences. |
683 | |||
| 47 |
NEVERHACKneverhack.com
Provides innovative and ethical cybersecurity solutions, supporting businesses and individuals in protecting their data through consulting, training, risk assessment, and AI-driven innovations. |
672 | |||
| 48 |
Advensadvens.com
Leading cybersecurity firm protecting organizations 24/7 from cyber attackers, supporting impact projects through an endowment fund. |
652 | |||
| 49 | 645 | ||||
| 50 | 643 | ||||
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. | |||||
| 51 |
Free Profreepro.com
Provides telecommunications, cybersecurity, IT, and cloud solutions for all businesses, from small to large, including public organizations, ensuring data connectivity and security. |
630 | |||
| 52 |
Tenexatenexa.com
Offers digital services through subsidiaries, focusing on Cloud, cybersecurity, and global IT outsourcing from data centers to users, supporting client innovation strategies. |
624 | |||
| 53 |
Groupe Sigmasigma.fr
The company aims to enhance performance through digital impact, innovate eco-friendly solutions, and build digital ecosystems with expert dialogue |
607 | |||
| 54 | 601 | ||||
| 55 |
CHEOPS TECHNOLOGYcheops-technology.com
Specializing in secure IT infrastructure, this company is a leader in Cloud Computing in France With 4 divisions, they offer expertise in Cloud, Cybersecurity, and Technology Modernization |
601 | |||
| 56 | 586 | ||||
| 57 |
Devoteam | Google Cloud Partnergcloud.devoteam.com
Provides innovative Google Cloud solutions across AI, IT modernization, security, and work transformation, with expertise in migrating users and assisting organizations. |
579 | |||
| 58 |
Nexpublicanexpublica.com
Develops innovative, secure software solutions for public, parapublic, and private sectors, supporting over 4,000 public and 1,200 private organizations. |
559 | |||
| 59 |
ChapsVisionchapsvision.com
French software company specializing in data intelligence and AI, providing industry-specific solutions for diverse sectors, supporting digital transformation globally. |
558 | |||
| 60 |
Klanikklanik.com
Provides IT engineering consulting, assisting partners with digital and technological projects, leveraging expert talent across various technological verticals globally for digital transformation. |
548 | |||
| 61 |
CELESTEceleste.fr
A national provider of internet access and connectivity solutions for businesses, offering innovative, high-availability, and eco-friendly services such as fiber optic connections and cloud hosting |
537 | |||
| 62 |
Ekinopsekinops.com
Provides open, trusted, and innovative network connectivity solutions. Delivers high value-added software-driven solutions for optical transport and virtualized managed enterprise services. |
509 | |||
| 63 |
Groupe ADSNgroupeadsn.fr
A group of experts in digital technology and data protection providing tools and solutions for notaries and regulated professions to secure sensitive data |
501 | |||
| 64 |
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 | |||
| 65 |
HENSOLDT in Francehensoldt.net
Manufactures and maintains critical electronic products, cyber security equipment, and energy solutions for aerospace, defence, energy, and transport sectors in France. |
501 | |||
| 66 |
Hervé Schauer Consultants (HSC)hs2.fr
Provides information security consulting, audits, penetration tests, risk management, and training services to secure diverse infrastructures and systems. |
500 | |||
| 67 |
SIB [numérique, santé et secteur public]sib.fr
Innovative cooperative in digital health and public sector, serving 620+ institutions in modernizing their IT systems with a wide range of services and expertise |
499 | |||
| 68 |
Equans Digitalequans-digital.com
Connects operational and information technology systems to structure infrastructure data, improving energy efficiency, asset availability, and security through cybersecurity and applied artificial intelligence. |
499 | |||
| 69 |
Thales Cybersecurity Servicesthalesgroup.com
Delivering cybersecurity products and services. Protecting organizations by identifying, detecting, and responding to cyber threats. Specializing in data security and digital infrastructure protection for diverse sectors. |
495 | |||
| 70 | 495 | ||||
| 71 |
Scutum Francescutum-group.com
Providing customized safety and security solutions including electronic security, defense, and fire prevention for governments and organizations. |
492 | |||
| 72 |
Forward Globalforwardglobal.com
Anticipating managing risks, addressing crises conflicts. Delivering services solutions integrating human expertise with technology for diverse risks. |
486 | |||
| 73 | 463 | ||||
| 74 | 435 | ||||
| 75 |
Stormshieldstormshield.com
Provides certified cybersecurity solutions for critical infrastructure, sensitive data, and operational environments to ensure cyber-serenity for clients globally. |
433 | |||
| 76 | 424 | ||||
| 77 |
Oodriveoodrive.com
Provides transparent tools for businesses to collaborate, communicate, and streamline operations, ensuring security, sovereignty, and compliance for users. |
385 | |||
| 78 |
Sewan Groupesewan.fr
Cloud operator and host providing essential communication services to businesses, with a national network of over 1000 partners serving 75,000 companies and 2000 mid-sized enterprises |
384 | |||
| 79 |
Saphir Groupquariq.com
Provides Industry 4.0 solutions, industrial automation, MES/MOM, PLM, data and AI, OT security for manufacturers, from strategy to execution globally. |
380 | |||
| 80 |
Devoteam | Cyber Trustdevoteam.com
Empowering clients to protect digital transformation by managing risks and deploying innovative cybersecurity solutions, ensuring resilience in the digital age |
374 | |||
| 81 |
ADENTISadentis.fr
High-tech consulting company developing software and embedded systems for digital TV, telecom, medical electronics, defense, and aeronautics. Research lab. |
362 | |||
| 82 |
SYNETISsynetis.com
Leading French cybersecurity consulting firm, assisting companies with information systems security, offering audits, GRC, digital identity, operational security, and training. |
351 | |||
| 83 |
iQantoiqanto.net
Industrial transformation through automation, robotics, AI, and cybersecurity to improve processes and deploy intelligent systems across diverse sectors for small and large enterprises. |
349 | |||
| 84 |
Avanquestavanquestgroup.com
A leading software publisher offering PDF, Security, and Photo products, utilizing cutting edge technology to enhance user experience worldwide |
340 | |||
| 85 |
Foliateamfoliateam.com
FOLIATEAM offers secure cloud telephony, IT, and cybersecurity solutions for businesses and public organizations, providing reliable networks, cloud services, and tailored support |
335 | |||
| 86 |
IMPRIMERIE NATIONALE S.A.ingroupe.com
Provides secure identity solutions including electronic components, biometrics integration, polycarbonate cards, digital services, and complex printing for governments and businesses worldwide. |
328 | |||
| 87 |
Ciril GROUPcirilgroup.com
A French software and Cloud industry player offering reliable solutions for public sector financial, HR, and technical management, geospatial applications, innovative GMAO and BIM technologies, and secure cloud services |
322 | |||
| 88 |
SEA TPIseatpi.com
ESN specializing in IT operations, offering services in supervision, system administration, cybersecurity, and support Constantly hiring various IT professionals nationwide Visit website for job opportunities |
321 | |||
| 89 |
Nomios Francenomios.fr
Integrator specializing in cybersecurity since 2004, offering tailored support, integration, and operational maintenance of cybersecurity solutions for businesses across France and Europe. |
314 | |||
| 90 |
AntemetAantemeta.fr
French SME, expertise in IT infrastructure, cloud computing, and cybersecurity since 1995. They help companies transform their information systems. |
310 | |||
| 91 |
Cloud Templecloud-temple.com
Provides IT transformation, hosting, and outsourcing for critical business applications. Guides customers from conception to maintenance across various IT verticals, specializing in private cloud. |
310 | |||
| 92 |
EvaBssievabssi.com
International consulting firm specializing in cybersecurity and information system performance, helping clients manage cyber risks and build innovative, efficient IS. |
310 | |||
| 93 |
Airbus Defence and Space Cybercyber.airbus.com
Designing, developing, integrating, and deploying reliable cyber security solutions for defense, governmental, and institutional customers, leveraging 30 years of expertise. |
308 | |||
| 94 |
NEXTEDIAnextedia.com
The Nextedia Group specializes in Cybersecurity, Cloud, Digital Workspace, and Customer Experience, providing expertise and solutions to large companies across various sectors |
305 | |||
| 95 | 303 | ||||
| 96 |
Cyllenegroupe-cyllene.com
Provides digital transformation through consulting, architecture, hosting, cybersecurity, application deployment, and data intelligence, emphasizing human expertise in technology solutions. |
295 | |||
| 97 |
act digital EMEA - Alter Solutionsactdigital.com
AI-first multinational technology company providing customized, scalable solutions with local agility and global expertise to create business value. |
284 | |||
| 98 |
SCTsct-solutions.fr
Providing high-speed internet, professional telephony, comprehensive cybersecurity, cloud backup, and GDPR compliance support for small and medium enterprises. |
279 | |||
| 99 |
WALLIX Groupwallix.com
A European cybersecurity specialist providing digital identity and access security solutions to enable business continuity, regulatory compliance, and ethical digital transformation |
277 | |||
| 100 | 274 | ||||
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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 France
- The largest companies in France 90,812
- Multinational companies in France 11,864
- Companies with in-house R&D in France 8,749
- Retail chains in France 7,525
- Manufacturers in France 6,697
- Professional services firms in France 6,610
- IT services companies in France 5,000
- IT Services and IT Consulting companies in France 4,943
- Hardware manufacturers in France 4,256
- Consulting firms in France 4,251
- Software Development companies in France 4,209
- Public sector organisations in France 4,006
- Family-owned companies in France 3,859
- Distributors and wholesalers in France 3,598
- Business Consulting and Services companies in France 3,392
- Financial services firms in France 3,095
- Critical infrastructure operators in France 2,721
- Real Estate companies in France 2,514
- Law Practice companies in France 2,454
- Subscription businesses in France 2,405
- Advertising Services companies in France 2,360
- Companies with a mobile app in France 2,270
- Retail companies in France 2,254
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The same list elsewhere in France
- Cybersecurity companies in Île-de-France 525
- Cybersecurity companies in the Hauts-de-Seine department 154
- Cybersecurity companies in Auvergne-Rhône-Alpes 91
- Cybersecurity companies in Occitanie 49
- Cybersecurity companies in Provence-Alpes-Côte d'Azur 48
- Cybersecurity companies in the Rhône department 48
- Cybersecurity companies in Hauts-de-France 44
- Cybersecurity companies in Grand Est 40
- Cybersecurity companies in Brittany 37
- Cybersecurity companies in the Bouches-du-Rhône department 36
- Cybersecurity companies in Nouvelle-Aquitaine 35
- Cybersecurity companies in the Nord department 30
- Cybersecurity companies in Pays de la Loire 28
- Cybersecurity companies in the Haute-Garonne department 27
- Cybersecurity companies in the Ille-et-Vilaine department 25
- Cybersecurity companies in the Yvelines department 25
- Cybersecurity companies in Paris 290