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Aerospace and defence companies headquartered in Brittany

Tamtam tracks 54 aerospace and defence companies headquartered in Brittany. This list ranks all of them by number of employees on LinkedIn, led by CS GROUP, LUMIBIRD : the specialist in laser technologies and PIRIOU. Their median headcount is 33. Half of them were founded in 1987 or later. The most common headquarters are Lannion (7), Rennes (7) and Brest (4).

🇫🇷 Brittany54 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
CS GROUPcs-soprasteria.com

Designs, builds, deploys, and maintains critical systems with innovative solutions and products, ensuring operational efficiency and security for client missions.

IT Services and IT Consulting 🇫🇷 Le Plessis Robinson 2,968 1968
2
LUMIBIRD : the specialist in laser technologieslumibird.com

Company designs, manufactures, and markets high-performance lasers for industrial, scientific, medical, and defense markets globally, leveraging 50 years of experience in laser technologies.

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Lannion 497 2018
3
PIRIOUpiriou.com

Shipbuilding, repair, naval engineering, and services for vessels up to 120m, delivered worldwide to private and public shipowners.

Shipbuilding 🇫🇷 Concarneau 408 1965
4
École Navaleecole-navale.fr

A prestigious French institution responsible for educating officers of the French Navy in various areas such as ships, submarines, and naval aviation

Higher Education 🇫🇷 Lanvéoc-Poulmic 200 1827
5
Cailabscailabs.com

Designs, manufactures, and develops innovative photonic solutions for space, industry (laser machining), telecommunications, and defense sectors, specializing in laser shaping.

Telecommunications 🇫🇷 Rennes 192 2013
6
Quantel laser by LUMIBIRDquantel-laser.com

A leading specialist in lasers, offering high-performance solid-state, fiber, and diode lasers for industrial, scientific, defense, space, and medical applications worldwide

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Lannion 137 1970
7
TALENDItalendi.com

A social enterprise offering industrial and digital services, employing over 550 people, including 420 with disabilities, with expertise in various fields like assembly and logistics

Motor Vehicle Parts Manufacturing 🇫🇷 Rennes 137 1975
8
ENAGenag.fr

A company with over 70 years of experience designing and manufacturing energy conversion products for marine, defense, and rail industries

Electrical Equipment Manufacturing 🇫🇷 Quimper 137 1946
9
Unseenlabslinktr.ee

A French company using nanosatellites and RF detection technology to geolocate vessels, combat unlawful activities at sea, and provide data worldwide

Defense and Space Manufacturing 🇫🇷 Rennes 133 2015
10
Novatech Technologiesnovatech-groupe.com

Design, manufacture, and integrate electronic solutions and products, supporting innovative companies from project conception to finished product delivery.

Aviation and Aerospace Component Manufacturing 🇫🇷 Pont-de-Buis-lès-Quimerch 132 1963
11
AMIAD - French Agency for AI in Defencedefense.gouv.fr

Accelerate AI integration within the defense ministry to enhance military capabilities and ensure success in future warfare scenarios.

Government Administration 🇫🇷 Bruz 129 2024
12
Meunier SAmeuniersa.com

This company specializes in project management, mechanical design, automation, robotic solutions, assembly, testing, on-site technical assistance, training, and commissioning in France and Europe

Industrial Machinery Manufacturing 🇫🇷 Brest 104 1977
13
ENENSYS Technologiesenensys.com

Development of advanced technologies for efficient video content distribution, targeted advertising, streaming, broadcasting, and secure communication worldwide.

Telecommunications 🇫🇷 Cesson-Sévigné 100 2004
14
Keopsys by LUMIBIRDkeopsys.com

Design and manufacture of high performance fiber lasers and amplifiers for scientific, industrial, defense, and medical applications including LiDAR and satellite communications.

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Lannion 95 1997
15
Multiplast - Groupe Carbomanmultiplast.eu

Designs, builds high-tech composite multi-hulls and mono-hulls for competition, aerospace, defense, industry, and construction sectors, with unparalleled track record.

Shipbuilding 🇫🇷 Vannes 91 1981
16
STACEMstacem.com

STACEM designs and manufactures O-rings and elastomer parts for aerospace, nuclear, chemical, and agri-food industries

Aviation and Aerospace Component Manufacturing 🇫🇷 Grand-Champ 89 1983
17
CENTIGON FRANCE SAScentigon.com

Design and manufacture of armoured vehicles including 4x4s, VIP sedans, cash trucks, and military vehicles with ballistic and explosive protection.

Defense and Space Manufacturing 🇫🇷 Lamballe 89 1948
18
Atelier industriel de l'aéronautique de Bretagnedefense.gouv.fr

An industrial aeronautical maintenance facility for the French Ministry of Defense, specializing in maintenance, repair, and modifications of military aircraft and equipment

Aviation and Aerospace Component Manufacturing 🇫🇷 Bretagne : Lann-Bihoué 83 2011
19
SYRLINKSsafran-group.com

Specializing in space, safety, and defense markets, the company designs and manufactures radio communications, geolocation/navigation systems, and time/frequency products for various applications

Aviation and Aerospace Component Manufacturing 🇫🇷 Cesson-Sévigné 72 2011
20
LAUDREN ELECTRONIQUElaudren-electronique.fr

An Electronic Manufacturing Services company with over 45 years of experience, specializing in electronic solutions for various industries Joined SYNOV Group in February 2022

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Lanester 69 1990
21
RTsys Grouprtsys.com

Develops and provides underwater acoustic, robotics, and electromagnetic products, customized monitoring solutions, and offshore data collection services for various sectors.

Defense and Space Manufacturing 🇫🇷 Lanester 68 2010
22
MICROSTEELmicrosteel.com

A specialized investment casting foundry that works with steel and cobalt-base superalloys for aerospace, defense, energy, and medical industries with modern machining capabilities

Aviation and Aerospace Component Manufacturing 🇫🇷 Vern-sur-Seiche 63 1978
23
Interface Conceptinterfaceconcept.com

Design manufacturing high-performance embedded boards and systems for ground, naval, air, and industrial applications with technical support and customization services.

Computer Hardware Manufacturing 🇫🇷 Quimper 52 1987
24
Vishay MCB Industrievishay.com

Provides custom and standard electromechanical components like potentiometers, encoders, and power resistors for demanding aerospace, railway, automotive, industrial applications, from definition to custom solutions.

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Chateau Gontier 50 1929
25
Euro-Sheltertoutenkamion-group.com

Design and manufacture of lightweight, durable mobile shelters using aluminum sandwich panels for defense, space, and aerospace industries.

Defense and Space Manufacturing 🇫🇷 Rennes 48 1920
26
Novatech Industriesnovatech-groupe.com

Designer, Manufacturer, and Integrator of Electronic Solutions and Products Your Partner in Innovation

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Lannion 38 1985
27
Avel roboticsavelrobotics.com

Specializing in high-performance composite parts using AFP, our company brings 4D composites to industries like offshore racing, naval, and aerospace

Aviation and Aerospace Component Manufacturing 🇫🇷 Lorient 33 2017
28
Siepelsiepel.com

Specializes in designing and installing high-tech solutions for antenna measurement and EMC, including Faraday cages and anechoic chambers, with a focus on security devices for critical infrastructures

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 La Trinité-sur-Mer 33 1986
29
ARMOR MECA DEVELOPPEMENTarmor-meca.com

Established in 1965, specialized in machining complex parts and assembling sub-assemblies for aerospace, defense, energy, naval, and medical industries Continuously innovating to meet client needs

Aviation and Aerospace Component Manufacturing 🇫🇷 Pleslin-Trigavou 32 1965
30
STIRWELDstirweld.com

The company developed a technology for Friction Stir Welding on CNC machines, offering cost-effective and adaptable solutions for welding and machining

Industrial Machinery Manufacturing 🇫🇷 Rennes 32 2017
31
BOPP Treuils JEBbopp.fr

Manufacturer of hydraulic and electrical deck equipment for various ships worldwide Specializing in winches, capstans, steering gears, and engineering services Sister company in China

Machinery Manufacturing 🇫🇷 Lanvéoc 32 1945
32
SCOPEXscopex.fr

Supplying advanced bomb disposal, detection, ground robots, tactical gear, perimeter protection, and training with high-quality, innovative products and support.

Defense and Space Manufacturing 🇫🇷 Plougoumelen 31 1977
33
DIATEAMdiateam.net

A European R&D company specializes in computer security, developing innovative cyber range platforms and industry-leading systems for cybersecurity training and testing labs

Computer and Network Security 🇫🇷 Brest 29 2002
34
LE GUELLEC Tubes & Profilesleguellec-tubes.fr

Manufacture and supply of thin walled precision metallic tubes and profiles with small cross sections, including bending and machining services.

Industrial Machinery Manufacturing 🇫🇷 Quimper 29 1946
35
PROTECNO-GTIDprotecno.fr

Specializing in complex printed circuit boards for over 40 years, based in Brest, Protecno offers manufacturing and expertise in PCBs

Defense and Space Manufacturing 🇫🇷 Brest 23 1972
36
Miloco Groupgroupemiloco.com

Design and manufacture of industrial trailers with expansion into airport trailers, serving both domestic and international markets.

Aviation and Aerospace Component Manufacturing 🇫🇷 Glomel 22 1986
37
API - Aciéries de Ploermel Industrieacieries.com

Specializing in custom steel casting production for small to medium series, featuring integrated technologies such as foundry, heat treatment, machining, welding, and painting ISO and IRIS certified

Mechanical Or Industrial Engineering 🇫🇷 Ploërmel 20 1939
38
ACEPPacepp.com

Acepp is a high value-added service company specializing in project management assistance and coordination, with expertise in various sectors such as naval, energy, and construction

Industrial Machinery Manufacturing 🇫🇷 Brest 19 1997
39
OBSAM - OBSolescence and Analysis Managementobsam.com

Obsam specializes in detecting, anticipating, and reducing obsolescence risk for complex systems, offering proactive monitoring, solution research, and validation support to various industries

IT Services and IT Consulting 🇫🇷 Dinan 18 2016
40
OSMOS Xosmos-x.com

Builds, operates reusable Orbital Transfer Vehicles for orbital transfer, in-space mobility, and space debris removal in multi-mission platform.

Defense and Space Manufacturing 🇫🇷 Rennes 18 2022
41
PROLANN SRMPprolann.fr

Specializes in high-precision mechanical parts machining, including fixation systems, hyperfrequency components, assemblies, and friction stir welding processes.

Defense and Space Manufacturing 🇫🇷 Lannion 17 1973
42
DRONE ACTdrone-act.com

Designs, manufactures, and prototypes remotely piloted aircraft for professionals, utilizing CAD/CAM, additive manufacturing, parts machining, HMI development, Autopilot, and IoT.

Defense and Space Manufacturing 🇫🇷 Malestroit 17 2014
43
MECATLASmecatlas.fr

Specializing in custom manufacturing of mechanical welded assemblies, metal structures, and tooling in steel, aluminum, and stainless steel for various industries

Manufacturing 🇫🇷 Bains-sur-Oust 16 1973
44
Hytech-imaginghytech-imaging.fr

Designs, operates, processes, and deploys spectral imaging systems and software for environmental mapping and monitoring in civil and defense applications.

Data Infrastructure and Analytics 🇫🇷 Plouzané 14 2016
45
Welkitwelkit.com

Providing professional solutions for military and law enforcement personnel, specializing in supplying equipment and gear for missions both domestically and abroad ISO 9001:2015 certified

Armed Forces 🇫🇷 Guer 13 1989
46
TOMPAEROtompaero.com

Introducing an AI-powered, modular mid-size cargo eVTOL UAV. This is a new product for air cargo transport.

Aviation and Aerospace Component Manufacturing 🇫🇷 Lannion 7 2024
47
EMD - Equipement des Métiers de la Défenseemd-pro.com

A dynamic team providing high-performance equipment in various fields, with a focus on reactivity, innovation, and continuous adaptation to meet military needs

Wholesale 🇫🇷 Larmor-Plage 7 2011
48
Armor Arsenalarmor-arsenal.com

Ruggedized, precision-engineered flow control technologies for defense and aerospace systems, designed for ground operations, orbital missions, and various challenging modern environments.

Defense and Space Manufacturing 🇫🇷 Lannion 6 n/a
49
BELLICOMbellicom.fr

Platform services for companies entering Defense and Security markets, domestic and export, with military expertise and operational understanding.

Defense and Space Manufacturing 🇫🇷 Rennes 5 n/a
50
SensUp by LUMIBIRDsensup-tech.com

An innovative SME specializing in laser-based electro-optical systems for Defense, Security, and Autonomous Systems applications

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Cesson-Sévigné 5 2013
51
EUROSATCOM & VSATECH Associéeurosatcom.eu

Proposes the most reliable SATCOM equipment with the best RF specification globally.

Telecommunications 🇫🇷 Les Ulis 4 n/a
52
ADVANTENadvanten.fr

A company specializing in advanced equipment for wireless data and video communications, serving civilian and military markets worldwide with high expertise in radio transmissions

Telecommunications 🇫🇷 Canton of Cesson-Sévigné 4 2002
53
REDCORE SASredcoresas.com

A company specializing in innovative security and defense solutions, born from the collaboration of a former police officer and a mechatronic engineer

Defense and Space Manufacturing 🇫🇷 Lanester 3 2014
54
BS MECAbsmeca.fr

Providing flexible and high-quality manufacturing services from prototype to production, prioritizing customer satisfaction, efficiency, and cost effectiveness

Industrial Machinery Manufacturing 🇫🇷 Concarneau 3 2017

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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 Oct 24, 2026.

More company lists in Brittany

The same list elsewhere in France