These Walloon companies with in-house R&D are primarily large organizations, including several long-established industrial firms and academic institutions. Noteworthy examples include Odoo, which offers integrated open-source business applications, and John Cockerill, designing and maintaining industrial equipment. Université catholique de Louvain and University of Liège are major higher education and research providers. Lhoist is a global leader in lime and minerals, while AGC Glass Europe produces flat glass for various industries.
The data reveals a significant concentration of these large R&D-focused companies in the Louvain-la-Neuve area, with multiple firms headquartered there. This suggests a regional hub for research and development activities within Wallonia, spanning diverse sectors from software to heavy industry and education.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 8,849 | ||||
| 2 |
Université catholique de Louvainuclouvain.be
Provides higher education programs, conducts high-level research, and offers services to society across multiple campuses in Belgium, employing thousands of staff. |
7,288 | |||
| 3 |
John Cockerilljohncockerill.com
Designs, integrates, modernizes, maintains equipment for energy, defense, steelmaking, environment, and industry, focusing on performance, innovation, and global reach. |
6,989 | |||
| 4 |
University of Liègeuliege.be
A public university in the Belgian French-speaking community focused on excellence in teaching, research, and innovation within a pluralistic vision |
4,883 | |||
| 5 |
Lhoistlhoist.com
Global leader in lime, dolime, and minerals, operating in over 25 countries, with a focus on customer proximity and high-quality solutions Join our team! |
3,515 | |||
| 6 |
AGC Glass Europeagc-glass.eu
Producer and distributor of flat glass for building and automotive industries, as well as various other sectors including transport, solar power, and high-tech applications |
3,153 | |||
| 7 |
IBAiba-group.com
A global leader in particle accelerator technology, providing advanced proton therapy equipment and services, as well as solutions in industrial sterilization and radiopharmaceuticals |
3,090 | |||
| 8 |
Sonacasonaca.com
An aerospace entity specializing in aerostructures, services, innovation, space, and defense, offering tailored solutions, competitive pricing, and global support |
2,241 | |||
| 9 |
Carmeusecarmeuse.com
Global manufacturer of lime, limestone, and mineral-based products for industrial and construction applications, as well as offering environmental benefits and equipment services |
2,047 | |||
| 10 |
UMONSweb.umons.ac.be
Comprehensive academic institution providing diverse undergraduate and graduate degrees in psychology, engineering, economics, architecture, and medicine including specialized adult training and international research. |
1,714 | |||
| 11 |
CHU de Charleroi - ISPPChumani.be
A healthcare group comprising multiple hospitals, day clinics, dialysis centers, and nursing homes, employing 6000 staff and 600 doctors, with research and educational facilities |
1,378 | |||
| 12 |
Prayonprayon.com
A global leader in phosphorus chemistry, manufacturing phosphate and fluorine solutions for various industries like food, water treatment, electronics, and pharmaceuticals |
1,064 | |||
| 13 | 1,052 | ||||
| 14 |
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 | |||
| 15 |
GAMING1gaming1.com
The company is a leading Belgian provider of land-based and online games of chance, aiming to become a world leader in regulated online gaming |
982 | |||
| 16 |
Magotteauxmagotteaux.com
Global supplier providing process optimization products, grinding media, and castings for mining, cement, and power industries through expert advice and sustainable manufacturing. |
966 | |||
| 17 |
AGC Automotive Europeagc-automotive.com
Leading European supplier of automotive glass, fixation devices, antennas, sensors, heating elements, and enhanced property glazing for vehicle manufacturers worldwide |
934 | |||
| 18 |
I-care Groupicareweb.com
Global leader in AI-powered predictive maintenance, offering data-driven condition monitoring solutions to reduce industrial risks and promote sustainability |
862 | |||
| 19 |
CHU HELORAhelora.be
Operating as a large hospital group across 7 sites in Wallonia, providing evolving, high-quality, and safe patient care through university approach and medical investments. |
727 | |||
| 20 |
Haute École de Namur-Liège-Luxembourg (Hénallux)henallux.be
Provides diverse higher education programs including bachelor's, master's, specializations, and continuing education across multiple campuses in Belgium. |
695 | |||
| 21 |
AISIN Europeaisin-europe.com
Global provider of automotive technologies and products focusing on creating cleaner, safer, and more comfortable mobility, with a multicultural team dedicated to value creation |
656 | |||
| 22 |
Automatic Systemsautomatic-systems.com
Design and manufacture of high-performance secure entrance control systems including pedestrian, vehicle, and passenger access solutions worldwide. |
500 | |||
| 23 |
Eurogenteceurogentec.com
International biotechnology supplier specializing in genomics, proteomics, and biomanufacturing with ISO certifications and FDA approval for commercial manufacturing of biologics |
372 | |||
| 24 | 366 | ||||
| 25 |
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 | |||
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. | |||||
| 26 |
Chemvironchemviron.eu
An international manufacturer specializing in activated carbon products for water and air purification, offering innovative treatment systems and services globally |
340 | |||
| 27 | 338 | ||||
| 28 |
3B-the fibreglass company3b-fibreglass.com
Development and supply of fibreglass products and technologies for reinforcing thermoplastic and thermoset polymers with global manufacturing and R&D. |
335 | |||
| 29 | 326 | ||||
| 30 | 320 | ||||
| 31 |
AW Europe
AISIN Europe, formerly AW Europe, specializes in automotive components and engineering services, offering innovative solutions to the automotive industry |
297 | |||
| 32 |
METALIS Groupmetalis-group.com
Specializes in complex metal stamping, deep drawing, metalloplastic overmolding, and assembly for automotive and construction industries globally. |
297 | |||
| 33 |
CRA-W Centre wallon de Recherches agronomiquescra.wallonie.be
A scientific establishment under the Regional Government of Wallonia focused on agricultural research for sustainable development in Wallonia |
260 | |||
| 34 |
QUALITY ASSISTANCE S.A.quality-assistance.com
Provides comprehensive analytical services for pharmaceutical industry, assisting with drug development, marketing authorization, and ensuring product quality, safety, and efficacy. |
240 | |||
| 35 | 235 | ||||
| 36 |
CRM Groupcrmgroup.be
Research center providing innovative industrial solutions across circular economy, energy transition, digitalization, advanced manufacturing, and construction sectors for large companies and SMEs. |
230 | |||
| 37 |
Institut de Pathologie et de Génétiqueipg.be
Human genetics consultations, rare disease partnerships, prenatal screening, pathology analyses, molecular biology platform, and SARS-CoV-2 genomic sequencing services. |
230 | |||
| 38 |
GALACTIClactic.com
Support manufacturers and distributors worldwide with natural antimicrobials, lactic acid derivatives, fermentation expertise, and tailored solutions for diverse industries. |
213 | |||
| 39 |
IRE - Institute for radioelementsire.eu
Production of radioisotopes for diagnostic and therapeutic nuclear medicine, radiopharmaceutical derivatives for cancer treatment, and radiological monitoring services. |
211 | |||
| 40 |
N-SIDEn-side.com
Providing software and services to optimize natural resource use in life sciences and energy, enabling sustainable and efficient industry transitions. |
211 | |||
| 41 |
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 | |||
| 42 |
Haute École Robert Schuman (HERS)hers.be
A higher education institution in Belgium offering bachelor and master programs in economics, health, education, science & technology, and social sciences Active in research and community services |
205 | |||
| 43 |
Multitelmultitel.be
A private research center specializing in applied research and development for industry leaders, SMEs, and spin-off companies in various technological fields |
192 | |||
| 44 |
LEFORT®lefort.com
Manufacture of high-quality scrap metal recycling equipment including shears, balers, and shredders with global distribution and industrial excellence. |
190 | |||
| 45 |
Pranarômpranarom.fr
Leader in Scientific Aromatherapy for 30 years, specializing in natural solutions from organic essential oils for health and wellness for all |
183 | |||
| 46 |
Saint-Gobain BENELUXsaint-gobain-benelux.com
A global leader in sustainable construction, designing, manufacturing, and distributing materials for the construction and industrial markets Committed to carbon neutrality by 2050 |
169 | |||
| 47 |
Laboratoires Ortisortis.com
Develops natural health solutions using plants, aiming to rebalance the body, strengthen immunity, regulate emotions, and address daily health issues. |
167 | |||
| 48 |
Euranovaeuranova.eu
Drives digital transformation and innovation, harnessing AI and Data power for businesses, crafting innovative solutions, exploring emerging technologies, fostering company culture. |
154 | |||
| 49 |
Sunrisehellosunrise.com
Specializing in improving sleep health, we offer a unique home sleep test and digital platform for easy diagnosis and treatment |
151 | |||
| 50 |
Ecofrost SA-NVecofrost.be
Belgian company producing high-quality frozen potato products, specializing in private label fries with strong R&D and global reach. |
142 | |||
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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 Nov 11, 2026.
More company lists in Wallonia
- The largest companies in Wallonia 1,106
- Multinational companies in Wallonia 234
- Manufacturers in Wallonia 151
- Retail chains in Wallonia 110
- Family-owned companies in Wallonia 82
- Hardware manufacturers in Wallonia 75
- Food and Beverage Manufacturing companies in Wallonia 75
- IT Services and IT Consulting companies in Wallonia 67
- IT services companies in Wallonia 67
- Critical infrastructure operators in Wallonia 65
- Consumer goods companies in Wallonia 59
- Software Development companies in Wallonia 58
- Transportation, Logistics, Supply Chain and Storage companies in Wallonia 57
- SaaS companies in Wallonia 54
- Retail companies in Wallonia 52
- Contract manufacturers in Wallonia 51
- Chemical companies in Wallonia 45
- Pharmaceutical companies in Wallonia 45
- Aerospace and defence companies in Wallonia 44
- Education providers in Wallonia 43
- Financial services firms in Wallonia 41
- Distributors and wholesalers in Wallonia 39
- Food and beverage companies in Wallonia 38
- Public sector organisations in Wallonia 38