| # | Company | Employees |
|---|---|---|
| 1 |
John Cockerilljohncockerill.com
Designs, integrates, modernizes, maintains equipment for energy, defense, steelmaking, environment, and industry, focusing on performance, innovation, and global reach. |
6,989 |
| 2 |
Sonacasonaca.com
An aerospace entity specializing in aerostructures, services, innovation, space, and defense, offering tailored solutions, competitive pricing, and global support |
2,241 |
| 3 |
FN Herstalfnherstal.com
Design and manufacture of advanced small arms, less lethal solutions, integrated weapon systems, and comprehensive support for global defense and law enforcement. |
984 |
| 4 |
Aerospacelabaerospacelab.com
Specializing in manufacturing satellites ranging from 50 kg to 1000 kg for Earth Observation, Telecommunications, and Technology Demonstrations, achieving TRL9 status in 2021 #BuildingOnHeritage |
347 |
| 5 | 320 | |
| 6 |
RHEA Grouprheagroup.com
Engineering solutions, system development and cybersecurity services for space, government and defense organizations across Europe and North America through diverse mission support programs. |
239 |
| 7 |
GDTech Groupgdtech-group.com
Integrated service provider for product development, specializing in design, numerical analysis, validation, and manufacturing across various industries with a focus on quality and flexibility |
207 |
| 8 |
KNDS Belgiumknds.fr
Manufacturing direct fire ammunition for tanks, mortars, and artillery alongside rifle grenades for international defense forces, NATO, and the Belgian Army. |
149 |
| 9 |
FN Browning Groupfnbrowninggroup.com
With over 130 years of experience, we develop and produce innovative small caliber light weapons for defense, security, hunting, and sports shooting |
104 |
| 10 |
SPACEBELspacebel.com
Space systems and software engineering for Space infrastructure and Earth monitoring, specializing in designing, developing, and integrating IT space systems and delivering geospatial information services |
99 |
| 11 |
EHP (Euro Heat Pipes)ehp.space
Specializing in thermal and deployable systems for the space industry, this Belgian company offers design, manufacturing, and testing services with EN 9100 accreditation |
98 |
| 12 |
Centre Spatial de Liègecsl.uliege.be
A research center specializing in designing, integrating, and calibrating instruments, systems, and satellites for space programs, with expertise in various technical fields |
94 |
| 13 |
Cenaerocenaero.be
A private non-profit research center providing numerical simulation methods and tools for innovation in various industries, high performance computing, and software solutions |
89 |
| 14 |
Lachausséelachaussee.com
Specializing in designing and building production machines for primers, ammunition, and detonators, along with providing training and know-how transfer services Exporting expertise globally |
78 |
| 15 |
Latecoere Belgium (TAC - Technical Airborne Components)latecoere.aero
Designs, manufactures, and supplies high-quality, custom engineered control, structural, and system rods and related peripheral parts for the aerospace industry. |
71 |
| 16 | 70 | |
| 17 |
EURENCO CLERMONTeurenco.com
Leading global producer of spherical powders for defense, security, sports, hunting, industrial tools, and ammunition reloading for enthusiasts worldwide. |
65 |
| 18 |
Lambda-X | Verhaert High-Techlambda-x.com
Specializing in optical system creation, development, and manufacturing for various industries, with a focus on innovation and customization for complex environments |
63 |
| 19 |
Coexpaircoexpair.com
Aerospace composite solutions provider specializing in RTM and SQRTM processes through engineering services, mold production, injection systems, workcells, and certified pre-serial part manufacturing. |
41 |
| 20 |
CASTINGPARcastingpar.com
Manufacturer of investment castings and sand castings in Titanium, steel, and stainless steel alloys, offering finish machined castings in various metals |
36 |
| 21 |
Dumoulin Aerodumoulin-aero.com
Specializing in fine hunting guns, the company diversified into manufacturing titanium and steel parts for aircrafts with precision, quality, and certifications |
35 |
| 22 |
Shur-Lok Internationalpccfasteners.com
Specializing in mechanical fastening elements for the aerospace industry for over 55 years, offering a range of products that have become industry standards worldwide |
35 |
| 23 |
Britte-Mustadbritte.be
A precision machining company with over 100 years of experience, specializing in a variety of industries including aerospace, space, and defense Offering expertise in industrializing products globally |
31 |
| 24 |
FERONYL saferonyl.com
Specialist in injection molding of polymers, composites, and metal alloys, providing development and manufacturing of technical components for land and air applications. |
30 |
| 25 |
Mockelmockel-precision.be
Specializing in high precision mechanics, MOCKEL serves defense, aerospace, and space industries with state-of-the-art machinery, expertise, and comprehensive production services |
30 |
| 26 |
Sobelcompsobelcomp.be
Designs and manufactures composite material parts for clients across various high-value markets, including aviation, defense, and industrial sectors. |
30 |
| 27 |
Mustad Belgiummustad.be
Specializing in high precision mechanics, the company delivers mechanical components to various sectors using cutting-edge technologies and a team of qualified technicians |
28 |
| 28 |
Dynali Helicopter Companydynali.com
Manufactures H3 Sport ultralight helicopters and helicopter-drone platforms. Provides companies worldwide with helicopter or drone platforms, integrating payloads. |
23 |
| 29 |
Redu Space Servicesses.com
A Belgian company specializing in advanced satellite communication systems and services, offering maintenance & operations for ESA Centre in REDU |
20 |
| 30 |
BATS (Belgian Advanced Technology Systems) S.Abats.be
Designs, develops, and supplies advanced technology solutions for defense and homeland security, specializing in surveillance radars and integrated sensor systems. |
20 |
| 31 |
SETTAS Titanium Centrifugal CastingsSETTAS.be
Leading provider of titanium centrifugal casting foundry services for aerospace, defense, and industrial markets, offering investment castings and sand castings in various alloys |
19 |
| 32 |
BEBLUE Cryotech SAbeblue.be
European provider of cryogenic testing services with expertise in material characterization, components testing, and engineering for aerospace, mobility, energy, maritime, and engineering industries |
14 |
| 33 |
SUB-ALLIANCEsub-alliance.com
Four manufacturing divisions with expertise in plastic, composite, polymer, metal part development, prototyping, production, and assembly. Also gears, turning, tooling. |
12 |
| 34 |
PJK precision mechanicspjkprecision.be
Precision mechanics company specializing in machining high-precision components for industries such as aerospace, defense, medical technology, and machinery, offering competitive prices and quality services |
12 |
| 35 |
GILLAM powered by Infratechgillam.be
A leading company established in 1974, specializing in electronic/electromechanical products for energy, transportation, space, and telecom sectors with tailored solutions and innovative products |
9 |
| 36 |
BeCOVERbecover.eu
An aerodynamic test center for new generation civil and military aircraft engine compressors, located in Liège, validating breakthrough innovations for environmental challenges. |
8 |
| 37 |
Genitek Engineeringgenitek.be
Belgian firm specialized in research and development for electronic design. Provide tailor-made solutions for partners in medical, railway, automotive, avionics and defense sectors. |
7 |
| 38 |
Sonaca Engineering Servicestestcenter.sonaca.com
SES offers fully integrated engineering solutions including design, certification, manufacturing, and after sales support for aerospace, ground transport, defense, and wind industries |
5 |
| 39 |
Constellr Belgium (ex-ScanWorld)scanworld.be
Providing affordable access to satellite imagery and analytics for sustainable agriculture, leveraging data-driven decisions to optimize input management and environmental stewardship |
4 |
| 40 |
Q-Square Aerospaceqsquare.aero
Specializing in aeronautics, space & defense, we offer services to reduce costs, improve workflows, deploy quality management frameworks in a cost-effective, pragmatic manner |
3 |
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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.
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