| # | Company | Employees |
|---|---|---|
| 1 |
BNP Paribas Fortisbnpparibasfortis.be
A financial institution dedicated to positive growth, offering solutions to make customers' lives easier and promoting sustainability through various initiatives |
13,663 |
| 2 |
KBC Bank & Verzekeringkbc.be
A leading integrated bank-insurer focused on individuals, private banking clients, and small to medium-sized enterprises in Belgium, Central and Eastern Europe Operating worldwide selectively |
13,565 |
| 3 |
Proximus Groupproximus.com
Provider of connectivity and digital services in Benelux and global markets, investing in networks, digital ecosystems, and innovative communication solutions. |
13,297 |
| 4 | 9,028 | |
| 5 |
Eurocleareuroclear.com
A global provider of settlement and related services for bond, equity, ETFs, and mutual fund transactions, with a diverse and inclusive culture |
5,937 |
| 6 |
bpostgroupbpostgroup.com
The company focuses on creating connections through personalized services, constant improvement, challenging projects, collaborations, latest technologies, job opportunities, and training programs |
5,309 |
| 7 |
Infrabelinfrabel.be
A Belgian company maintaining railway infrastructure, coordinating train traffic, and focusing on innovation to develop sustainable and modern mobility solutions |
5,279 |
| 8 |
ING Belgiuming.com
Global financial institution driving sustainable progress through innovation, technology, and customer-centric banking, with diverse teams shaping the future |
4,728 |
| 9 |
STIB-MIVBstib-mivb.be
Public urban transport network serving Brussels and surrounding communes with metro, tram, bus, and night bus lines for commuters. |
4,232 |
| 10 |
AG Insuranceag.be
Leading insurer in Belgium with a 200-year history, focusing on long-term relationships, sustainability, employee growth, and investing in the local economy |
4,068 |
| 11 |
ENGIE Belgiumengie.be
Belgian market leader in electricity, natural gas, and energy services, offering innovative solutions for more economical, low-carbon energy use |
3,272 |
| 12 |
Elia Groupelia.be
Operation of extensive high-voltage electricity transmission networks in Belgium and Germany, ensuring balanced supply and supporting energy transition. |
2,759 |
| 13 |
UZ Brusseluzbrussel.be
Quality healthcare in a Dutch-speaking university hospital, providing care for all regardless of language or beliefs, while respecting individual autonomy |
2,704 |
| 14 |
EUROCONTROLeurocontrol.int
The company supports European aviation by delivering technical excellence and expertise in air traffic management, addressing industry challenges and promoting future evolution |
2,639 |
| 15 | 2,600 | |
| 16 |
P&V Groupchouettejob.be
Belgian cooperative insurance group offering insurance solutions for individuals, self-employed, businesses, and institutions through independent brokers and exclusive agents Developing legal protection solutions under separate label |
2,139 |
| 17 |
CHU Brugmannchu-brugmann.be
A large hospital in Brussels with 853 beds, 29,000 admissions, and 360,000 outpatient visits annually Known for its social, university, and technical characteristics |
1,943 |
| 18 |
Cliniques universitaires Saint-Lucsaintluc.be
Leading academic hospital in Brussels, offering specialized care, research, and education to patients from Belgium and beyond, with a focus on patient-centered values and collaboration |
1,889 |
| 19 |
National Bank of Belgiumnbb.be
Ensuring economic stability through price control, financial system security, safe cash, efficient payments, and providing financial data and analysis. |
1,832 |
| 20 |
Degroof Petercamdegroofpetercam.com
Belgian investment house providing wealth management, investment management, and investment banking services to private families, corporations, and institutional investors across Europe and Asia. |
1,448 |
| 21 |
Bpostbpostgroup.com
bpost connects people, businesses, and communities through personalized service, continuously improving products and services, offering challenging projects, collaborations, and job opportunities |
1,321 |
| 22 |
Fluxysfluxys.com
A global energy infrastructure group focused on transporting carbon-neutral energy carriers, storing carbon dioxide, and operating gas transmission & storage facilities |
1,259 |
| 23 | 1,253 | |
| 24 | 1,216 | |
| 25 |
Sibelgasibelga.be
The company operates as a distribution network operator for electricity and natural gas in the Brussels region, managing distribution networks |
944 |
| 26 | 893 | |
| 27 |
Veolia | Belgium & Luxembourgveolia.be
Leading provider in Belgium and Luxembourg offering integrated solutions for water, waste, and energy management, aiming to reduce environmental impact and accelerate ecological transition |
885 |
| 28 |
Cliniques de l'Europe / Europa Ziekenhuizencliniquesdeleurope.be
Provides comprehensive healthcare services with advanced medical technology, ensuring high-quality, personalized care for patients in a modern hospital environment. |
854 |
| 29 |
De Watergroepdewatergroep.be
The largest water supplier in Flanders, delivering water to 29 million customers in 175 municipalities, and involved in sewage networks and industrial water projects |
853 |
| 30 |
Solidaris Walloniesolidaris.be
Health access for all in Belgium through managing health insurance Providing support for 3 million affiliates with 10,000 staff committed to their needs |
829 |
| 31 |
Clinic Saint-Jean Brusselsclstjean.be
A large private hospital in Brussels with a staff of 1800 providing specialized care in ambulatory and hospital settings, placing patient care at the forefront |
777 |
| 32 |
BNP Paribas Factoringbnpparibas.com
Factoring services across 15 countries, offering tailored domestic and international solutions with harmonized contracts and single contact point. |
774 |
| 33 |
Queen Fabiola Children's University Hospital (HUDERF/UKZKF)huderf.be
Dedicated Belgian hospital providing holistic, multidisciplinary care for children and adolescents, focusing on their well-being, development, education, and research excellence |
598 |
| 34 |
FEDERALE Assurance-Verzekeringfederale.be
Mutual insurance company offering comprehensive insurance and financial products for individuals and businesses across all sectors, with over 100 years experience. |
577 |
| 35 | 543 | |
| 36 |
EDF EU Affairsedf.fr
A leading electricity company in Europe, focused on sustainable energy, innovation, and environmental responsibility while actively participating in EU policy dialogue |
521 |
| 37 |
Bruxelles-Propret茅 | Net Brusselarp-gan.be
A regional organization in Brussels overseeing waste collection, treatment, cleaning, and awareness initiatives to promote a healthier city environment |
501 |
| 38 |
KBC Asset Managementkbcam.kbc.be
In-house asset manager for an integrated bank-insurance group protecting client assets through banking, insurance, and tailored investment solutions across European core markets. |
472 |
| 39 | 389 | |
| 40 |
NMBS Internationaal - SNCB Internationalb-europe.com
A leading provider of international train tickets in Europe, offering booking services through various channels and partnerships with major railway companies |
355 |
| 41 |
KBC Brussels Bank and Insurancekbcbrussels.be
Brussels-based banking and insurance provider with tailored solutions for personal, self-employed, and SME clients, focusing on mobility, housing, and entrepreneurship |
309 |
| 42 |
ERGO INSURANCE (Belgium)ergo.be
Global insurance provider offering personalized solutions for savings, investments, and pension savings Emphasizing customer needs and understanding through tailored insurance offerings |
268 |
| 43 |
Euroclear FundsPlaceeuroclear.com
Single access point providing neutral infrastructure for custody, trade execution, and distribution across multi-asset fund universes with data-enabled services for market players. |
254 |
| 44 |
DAS Belgiquedas.be
The company is a leader in legal protection insurance in Belgium, offering high-quality products and services across various legal domains |
236 |
| 45 |
NIRAS-ONDRAF Belgian Agency for Radioactive Waste and Enriched Fissile Materialsondraf.be
Radioactive waste management agency in Belgium dedicated to developing and implementing solutions with respect for society and the environment |
224 |
| 46 |
BBEbbe.digital
European bank with operations in Belgium, France, and the UK offering commercial banking, trade finance, and dealing services to clients globally Creating value through long-term relationships |
213 |
| 47 |
Puilaetco | A Quintet Private Bankpuilaetco.be
A private bank providing wealth management solutions and services since 1868, with a focus on building enriching lives for clients Part of a European banking group |
212 |
| 48 |
DVV verzekeringendvv.be
With over 90 years of experience, this organization provides personalized insurance solutions to individuals, entrepreneurs, and organizations, focusing on honesty, proactivity, and reliability |
173 |
| 49 |
Deutsche Bank Belgiumdeutschebank.be
Leader in wealth management and investment advice, focusing on investing in clients' lives and providing personalized solutions Responding to inquiries on bank workdays |
168 |
| 50 |
Athora Belgiumathora.com
Specializes in savings and investment insurance for individuals and businesses through a network of over 500 specialized brokers, serving around 200,000 clients |
166 |
| 51 |
Keolis Belgiumkeolis.be
An international mobility player with a large fleet and global presence, specializing in various transportation services and innovative mobility solutions |
163 |
| 52 |
B Logistics NV/SAlineas.net
Transformed from state-owned to private, B Logistics provides reliable rail transport and logistics solutions in Europe, focusing on efficiency and growth through innovation |
112 |
| 53 |
Veolia | Flexcityflexcity.energy
This organization helps industrial and commercial establishments in multiple countries optimize their electricity assets for revenue and contribute to national power supply security |
100 |
| 54 |
Monument Assurance Belgiummonumentassurance.be
A leading Belgian life assurance company specializing in consolidating life insurance and pension portfolios, focused on growth and trust for stakeholders |
80 |
| 55 |
Patronale Life NVpatronale-life.be
A dynamic firm with nearly a century of experience in life insurance, mortgages, and savings management Offers guaranteed capital, interest, and fund-linked life insurance Also provides mortgages for individuals and businesses, focusing on wealth accumulation with a conservative approach to costs and distribution |
67 |
| 56 |
MeDirect Belgiummedirect.be
Belgian online bank providing investments, wealth management, savings products, and mortgages in partnership with Allianz, focusing on client satisfaction through digital platforms. |
62 |
| 57 |
Bancontact Companybancontactpayconiq.com
A team of professionals enhancing payment experiences for Belgians through easy, secure electronic and mobile transactions, with significant growth in usage |
59 |
| 58 |
Banque Transatlantique - Belgiumbanquetransatlantique.be
Private banking firm in Brussels offering tailored wealth management, asset diversification, patrimonial engineering, and credit services with close client relationships. |
56 |
| 59 | 48 | |
| 60 |
Generali Belgiumgenerali.be
Specializing in life and non-life insurance, serving 530,000 clients through a network of 1000+ independent brokers across Belgium Part of Athora Group since 2019 |
48 |
| 61 |
Allianz Partners Belgiumallianz-partners.com
A global leader in travel insurance and assistance, serving over 250 million people with an intervention every 2 seconds, ensuring help anytime, anywhere |
38 |
| 62 |
ICBC (EUROPE) S.A. Brussels Branchbrussels.icbc.com.cn
A leading Chinese commercial bank with a global presence, providing banking services in multiple countries, including Belgium, to support economic cooperation and trade |
24 |
| 63 |
Lineaslineas.net
A logistics and supply chain company based in Brussels, Belgium, offering transportation and distribution services |
20 |
| 64 |
Ethias Assuranceethias.be
An insurance company in Brussels, Belgium providing various types of insurance products and services to individuals and businesses |
11 |
| 65 |
Banque Nagelmackers S.A.nagelmackers.be
A Brussels-based banking company offering financial services |
10 |
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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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