| # | Company | Employees |
|---|---|---|
| 1 |
Armée de l’air et de l’espacedevenir-aviateur.fr
Recruitment and training of military personnel in aviation-related fields including cybersecurity, telecommunications, engineering, mechanics, HR, and security. |
11,710 |
| 2 |
Thales Alenia Spacethalesaleniaspace.com
Designing satellite-based systems for telecommunications, navigation, Earth observation, defense, and space exploration, ensuring connections, monitoring our planet, and discovering the Universe. |
8,168 |
| 3 |
European Space Agency - ESAesa.int
Coordinates member resources for space capability development, ensuring benefits for European and global citizens through ambitious space programs. |
7,016 |
| 4 |
Air France Industries KLM Engineering & Maintenanceafiklmem.com
Provides comprehensive aircraft maintenance, repair, and overhaul services, focusing on air safety, operational management, cost minimization, and technical excellence with an extensive track record. |
3,989 |
| 5 |
Clayens NPclayens.com
Transforms high-performance polymers, composites, and precision metal parts, offering tailored solutions from project to production across diverse industrial sectors. |
978 |
| 6 |
CORDON GROUPcordongroup.com
Provides electronic product maintenance, repair, logistics, manufacturing, and engineering across 40 sites in 12 countries for various partners. |
907 |
| 7 |
Garde nationaledefense.gouv.fr
A national reserve force consisting of civilian volunteers working alongside military personnel for the protection of the nation Offering training, pay, and support |
683 |
| 8 |
Bertin Technologiesbertin-technologies.com
Supplies high-end instrumentation, components, equipment, and systems for critical applications such as defense, nuclear, environment, and scientific knowledge improvement. |
566 |
| 9 |
Axon' Cable Groupaxon-cable.com
Design and manufacture custom electrical connections, cables, and connectors for harsh environments across automotive, aerospace, defense, medical, and industrial sectors. |
438 |
| 10 |
ALSYMEXalsymex-alcen.com
Designing, manufacturing, and installing complex mechanical systems and equipment for diverse sectors including nuclear, aerospace, defense, and medical industries. |
329 |
| 11 |
HGH Infrared Systemshgh-infrared.com
Designs, develops, assembles, and sells optronic systems for industrial, civil, defense, and security applications, specializing in innovative infrared technology and advanced sensors. |
283 |
| 12 |
Department of Defence of Australia
Management consulting services for the Department of Defence in Australia, located in Canberra, specializing in strategic advisory and operational improvement |
278 |
| 13 |
DAVEY BICKFORD ENAEX
Specializing in industrialization and quality management, this company is a leader in project management within the industrial and defense sectors |
240 |
| 14 |
Latitudelatitude.eu
Developing innovative, sustainable rocket launchers focused on space exploration, fostering inclusivity, collaboration, and human-centered space experiences. |
232 |
| 15 |
French-German Research Institute of Saint-Louisisl.eu
Development of advanced defense technologies focusing on weapon detection, soldier protection, smart ammunition, and survivability of weapon systems. |
222 |
| 16 |
Safran Aéro Compositesafran-group.com
Specializes in manufacturing composite blades and casings for aircraft engines, supplying essential components for jet engine assembly. |
219 |
| 17 |
THERMOCOAXthermocoax.com
Designs and manufactures custom thermal solutions and components, specializing in mineral insulated cable for critical mission applications, based on 70 years expertise. |
205 |
| 18 |
AITS (Atelier Industriel de Tôlerie et de Soudure)aits49.fr
Sheet metal work, fine sheet metal, boilermaking, and welding services. Full project support from prototyping to small and medium series production. |
175 |
| 19 |
Baumertbaumert.fr
Specialist in technical doors for protecting sensitive sites, with 50 years experience in nuclear and industry Designs high-security doors meeting strict standards |
161 |
| 20 |
Amphenol Air LB Franceamphenol-airlb.fr
Design and manufacture high-performance interconnect solutions and accessories for aerospace, defense, rail, industry, energy, and medical sectors. |
154 |
| 21 | 152 | |
| 22 |
3P - PERFORMANCE PLASTICS PRODUCTS3pcorporate.com
Development and production of high-performance plastic and composite solutions for industries like aerospace, automotive, energy, and fluid handling. |
148 |
| 23 |
HQ Eurocorpseurocorps.org
Multinational military headquarters providing command for diverse operations including crisis response, peacekeeping, training, and high-intensity conflict missions across Europe and beyond. |
127 |
| 24 |
SPRgroupe-spr.com
SPR is an industrial group specializing in precision machining located in Mulhouse, Alsace They work with various industries, providing innovative mechanical engineering solutions |
120 |
| 25 |
SOFEMAsofemagroup.com
A company specializing in exporting defense and aerospace equipment, offering overhauled and adapted solutions for land, sea, and air platforms |
109 |
| 26 | 98 | |
| 27 |
Centigon Security Groupcentigon.com
Manufacturing armored vehicles for VIPs, heads of state, cash-in-transit, and commercial sedans/SUVs, with significant military capabilities globally. |
94 |
| 28 |
Manufacture du Haut Rhin (MHR) - Manurhinmhr-defense.com
Manufacture and support of small to medium caliber ammunition production lines, machinery, maintenance, and technical services worldwide. |
88 |
| 29 | 72 | |
| 30 |
ST Engineering Antycipsteantycip.com
Provides expert simulation, display, and virtual reality solutions, combining in-house technical expertise with a wide range of software and hardware products since 1997. |
71 |
| 31 |
Mecanyvoismecanyvois.com
MECANYVOIS provides fully integrated engineering and tooling solutions for global leaders in aerospace, automotive, energy, and mechanical industries with precision machining capabilities |
62 |
| 32 |
UCELIAucelia.com
Specializes in complex aero-engine parts and aluminium alloy aero-structures for civil/military aerospace and defence industries, including Ariane rocket and Airbus. |
61 |
| 33 |
Mécanique Générale Langroisemgl.fr
Specializing in providing quality products or services, certified in EN 9100:2010 and ISO 9001:2015 standards for aerospace and general industries |
57 |
| 34 |
COMMECA Anjoucommeca.com
A precision mechanical company located in Beaucouze, France, specializing in precision machining and located in the Angers-Beaucouze industrial zone |
53 |
| 35 |
SOFRAMEsoframe.com
Specialized in providing innovative mobility solutions, this company designs and manufactures protected tactical and logistical vehicles for armed forces and security forces |
52 |
| 36 |
RESSORTS MASSELINmasselin.com
Technical leader in engineering and manufacturing springs, torsion bars, and sub-assemblies with elastic properties for aerospace, energy, transportation, and industry sectors. |
51 |
| 37 |
Concept Métalconceptmetal.fr
Specializing in boilermaking, fine sheet metal work, welded assemblies, laser and waterjet cutting, and orbital welding, working with metals. |
51 |
| 38 |
PROMÉTHÉE Earth Intelligencepromethee.earth
Operates nanosatellite constellations for Earth observation, providing strategic and environmental intelligence for crisis management and sustainable development across diverse applications. |
45 |
| 39 |
AML MICROTECHNIQUE LORRAINEaml-microtechnique.com
French subcontractor specializing in precision machining, design, manufacturing, and integration of passive high-frequency components for aerospace and defense sectors. |
41 |
| 40 |
ASI AVIATIONasi-group.fr
Develops, produces, and markets aircraft. Also handles cabin fitting, mission system integration, spare parts production, and aircraft maintenance. |
40 |
| 41 |
GROUPE AGSgroupe-ags.com
Specializing in industrial subcontracting, the company offers laser cutting, precision machining, sheet metal work, welding, and metal additive manufacturing services across multiple sectors |
38 |
| 42 |
NEXAMnexam.aero
Company manufactures and supplies high-quality cutting tools, adapting to client needs and materials, maintaining customer satisfaction and pioneering quality procedures since 1946. |
37 |
| 43 | 36 | |
| 44 |
ESARIS INDUSTRIESesaris.fr
Supply and assembly of electromechanical components and sub-assemblies for aeronautics, railway, defense, electrical distribution, transport, and industrial sectors. |
35 |
| 45 |
UTILIS Cover the Worldutilis-international.com
Global specialists in designing, supplying, and supporting rapid deploy shelters and camp systems, with expertise in field deployable solutions for various deployments |
35 |
| 46 |
SYSTELEMsystelem.com
Based in Marignier, France, a company specializing in mechanical and industrial engineering services. |
33 |
| 47 |
Leanspaceleanspace.io
Facilitating the growth of the space economy by providing an innovation platform for rapid development of comprehensive space software infrastructures |
32 |
| 48 |
CHESNEAU SERRETchesneau-serret.com
Specializing in precision polishing, adjustment, and 3D measuring to ensure surface quality and geometrical compliance for customers through comprehensive technical services |
30 |
| 49 |
Business Alu Masuéfonderie-bam.fr
Designs and develops aluminum foundry products, machining, and assembly of components for automotive, energy, aerospace, and other industries. |
28 |
| 50 |
SKYINCAPskyincap.com
Disability engineering company, provides high value-added technical specialization in aerospace, banking, and transport, focusing on career development and training for employees. |
28 |
| 51 |
TEKNIAEROtekniaero.com
Company specializing in aeronautical subcontracting, aluminum, hard metals, and composite materials, located in Bayonne, trusted by major aerospace contractors. |
27 |
| 52 |
ASMAN TECHNOLOGYasman-technology.com
Innovative French SME specializing in remote control of sensors, offering light surveillance systems, mission aircraft, tactical drones, and aerial missions |
25 |
| 53 |
ADG - Les ateliers des gravesadg-sa.com
Specializing in engineering and manufacturing, providing comprehensive solutions and services for various industrial projects, from design to production. |
25 |
| 54 |
Forgeavia - Groupe Mecapoleforgeavia.fr
Specializing in precision stamping and machining of metal parts, with expertise in safety-critical components for various industries, supported by a network of innovative companies |
24 |
| 55 |
Chaudronnerie Industrielle du Midi - LGF Groupelgfgroupe.com
Designs, manufactures, and sells complex parts or sub-assemblies for the aeronautical industry. Focuses on machining, metalwork, sheet metal, and assembly. |
23 |
| 56 | 22 | |
| 57 |
Groupe Mecanique 2Lgroupe-mecanique-2l.com
Specializing in machining parts for aeronautics, automotive, energy, and civil engineering with over 37 years of experience, part of the international Safe Group |
22 |
| 58 |
VALMECAvalmecasa.com
Specializing in precision mechanics and large-scale machining since 1976, providing services to industries such as steel, metallurgy, piping, and energy |
21 |
| 59 |
REIMS AEROSPACE
The company specializes in manufacturing complex aerostructures and providing MRO services with over 80 years of experience in aircraft manufacturing They serve various industries as a tier 1 supplier |
20 |
| 60 |
Dronaviadronavia.com
European leader in drone safety accessories, offering innovative products to professional drone operators that meet EASA standards for risk management and airspace safety. |
19 |
| 61 |
PMV Engineeringpmv-groupe.com
Provides EASA and GCAA approved design services for aircraft cabin interiors, systems, avionics, liveries, structures, and repairs, serving global aviation clients. |
19 |
| 62 |
JSM-PERRINjsmperrin.com
Independent French company specializing in machining complex parts from difficult materials like titanium and inconel, and assembling sub-assemblies for major industrial clients. |
19 |
| 63 |
ELEMCAelemca.com
Performs critical property measurements, quality control, failure analysis, and reliability evaluations for microtechnologies, embedded systems, and mechanical parts in various industries. |
19 |
| 64 |
Moret Industries Groupmoretindustries.com
Design and manufacture of custom equipment and machines for agro-industry, energy, defense, focusing on bioresource extraction, drying, incineration, and waste management. |
15 |
| 65 |
Pangolin Defensepangolin-defense.com
Design, produce, and market high-grade ballistic protection systems. Solutions adapted for all theaters of operation, protecting vehicles and personnel with superior weight, comfort, and performance. |
15 |
| 66 |
Nimesis Technologynimesis.com
Expertise in shape memory alloys, development and production of smart actuators for aerospace, biomedical, automotive, and various industrial applications. |
12 |
| 67 |
Structural Fasteners Factory - SFFsffactory.eu
Manufactures structural fasteners for aerospace, space, defense, naval, and other high-demand sectors, hot forging various metals to specification. |
12 |
| 68 |
Eau & Feueauetfeu.fr
A leading player in the fire safety market for over 50 years, specializing in designing, producing, and delivering fire fighting equipment to various industries globally |
12 |
| 69 |
ALM Mécaalm-meca.com
Innovative machining company specializing in precision mechanics for various industrial sectors, particularly aeronautics, with customized mechanical parts manufactured using high-tech machinery |
11 |
| 70 |
Commandement des actions dans la profondeur et du renseignement
The company focuses on strengthening combat power by providing command, action, and support capabilities to weaken the enemy in depth |
11 |
| 71 |
Viraj Aeroviraj-aero.com
Developing patented steam injection for aircraft engines, reducing fuel consumption and climate impact. Compatible with kerosene, SAF, and hydrogen, for cleaner aviation. |
10 |
| 72 |
REIMS AVIATION INDUSTRIEww38.reims-aviation.eu
Aircraft manufacturer specializing in building light twin turbo prop planes like the F406, also providing installation of mission systems on other platforms |
10 |
| 73 |
CELECTRONcelectron.fr
Designs, studies, and produces electronic tools specifically for various professions within the aeronautics sector. Focus on specialized tooling. |
10 |
| 74 |
FTV - Fixation Technique de Vireuxftv-sa.fr
A leading French company specializing in technical fixings, offering customized solutions for various industries such as armament, aerospace, and nuclear energy with ISO certifications |
10 |
| 75 |
ASI Innovationasi-group.fr
Engineering aircraft design, offers aircraft part design, equipment installation help, structural sizing, drawing drafting, industrialization, regulatory text comprehension, and aeronautical project management. |
10 |
| 76 |
GOUBIER INDUSTRIEgoubier-tolerie.com
Industrial sheet metal subcontractor, specializing in fine sheet metal and complex assemblies, assisting clients from product design to optimization in defense, rail, and electronics. |
7 |
| 77 |
SAREM - Chaudronneriechaudronnerie-sarem-64.fr
The company specializes in manufacturing and supplying tooling for the aerospace, maritime, and naval industries. They provide essential equipment for these sectors. |
7 |
| 78 |
LumiSynclumi-sync.com
Develops Photonic Integrated Circuits for telecom, aerospace, and defense, featuring a patented 100% photonic oscillator for faster, more energy-efficient data processing. |
5 |
| 79 |
PLANCY MECAplancymeca.com
High-precision mechanical machining specializing in aerospace and defense materials, known for quality, reactivity, and handling diverse metals and plastics. |
5 |
| 80 |
ITS - Impact Tactical Systemsits-sa.ch
A company in France and Switzerland designs, manufactures, and distributes specialized equipment for law enforcement and military special forces with a focus on quality and performance |
5 |
| 81 |
AMECS
Specializing in telecommunications and video technologies, AMECS develops security solutions for state security services |
4 |
| 82 |
MECAEROLORmecaerolor.fr
Specialized in precision machining for industries like aerospace, rail, and steel, the company adapts to technological advancements to provide reliable solutions with cost and time efficiency |
4 |
| 83 |
MECA CLEM TECHNOLOGIES (ex CLEM) MECANIQUE DE PRECISION GRAND ESTmecaclem.com
Specializing in machining plans for machines and custom parts, offering 3-5 axis machining in small and large series Providing added value through in-house design and 20 years of expertise Serving various industries in the Grand Est region |
2 |
| 84 |
DOUBLE CŒURdouble-coeur.fr
High-precision metal part fabrication using laser welding and additive manufacturing for aerospace and energy sectors, focusing on critical industrial production series. |
1 |
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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 Oct 24, 2026.
More company lists in Grand Est
- The largest companies in Grand Est 4,506
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- Software Development companies in Grand Est 180
- SaaS companies in Grand Est 179
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- Higher Education companies in Grand Est 118
- Accounting companies in Grand Est 115
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The same list elsewhere in France
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