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65 leading critical infrastructure operators in Brussels

Tamtam tracks 65 critical infrastructure operators headquartered in Brussels. This list ranks all of them by number of employees on LinkedIn, led by BNP Paribas Fortis, KBC Bank & Verzekering and Proximus Group. Their median headcount is 598. Half of them were founded in 1977 or later.

馃嚙馃嚜 Brussels65 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
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

Banking 馃嚙馃嚜 Brussels 13,663 n/a
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

Financial Services 馃嚙馃嚜 Brussels 13,565 1998
3
Proximus Groupproximus.com

Provider of connectivity and digital services in Benelux and global markets, investing in networks, digital ecosystems, and innovative communication solutions.

Telecommunications 馃嚙馃嚜 Brussels 13,297 n/a
4
Bnodebnode.com

Operating across Europe, North America, Asia-Pacific, specialized business units provide 3PL, fulfillment, cross-border e-commerce logistics, and last-mile delivery services.

Transportation, Logistics, Supply Chain and Storage 馃嚙馃嚜 Brussels 9,028 n/a
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

Financial Services 馃嚙馃嚜 Brussels 5,937 1968
6
bpostgroupbpostgroup.com

The company focuses on creating connections through personalized services, constant improvement, challenging projects, collaborations, latest technologies, job opportunities, and training programs

Transportation, Logistics, Supply Chain and Storage 馃嚙馃嚜 Brussels 5,309 n/a
7
Infrabelinfrabel.be

A Belgian company maintaining railway infrastructure, coordinating train traffic, and focusing on innovation to develop sustainable and modern mobility solutions

Rail Transportation 馃嚙馃嚜 Brussels 5,279 2005
8
ING Belgiuming.com

Global financial institution driving sustainable progress through innovation, technology, and customer-centric banking, with diverse teams shaping the future

Financial Services 馃嚙馃嚜 Brussels 4,728 n/a
9
STIB-MIVBstib-mivb.be

Public urban transport network serving Brussels and surrounding communes with metro, tram, bus, and night bus lines for commuters.

Travel Arrangements 馃嚙馃嚜 Brussels 4,232 1954
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

Insurance 馃嚙馃嚜 Brussels 4,068 1824
11
ENGIE Belgiumengie.be

Belgian market leader in electricity, natural gas, and energy services, offering innovative solutions for more economical, low-carbon energy use

Utilities 馃嚙馃嚜 Brussels 3,272 n/a
12
Elia Groupelia.be

Operation of extensive high-voltage electricity transmission networks in Belgium and Germany, ensuring balanced supply and supporting energy transition.

Utilities 馃嚙馃嚜 Brussels 2,759 2001
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 2,704 1977
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

Airlines and Aviation 馃嚙馃嚜 Brussels 2,639 1960
15
Dexiadexia.com

A financial group managed in resolution, Dexia offers diverse career opportunities focused on agility, cohesion, trust, and public interest engagement

Financial Services 馃嚙馃嚜 Brussels 2,600 n/a
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

Insurance 馃嚙馃嚜 Brussels 2,139 n/a
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 1,943 1923
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 1,889 1976
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.

Banking 馃嚙馃嚜 Brussels 1,832 1850
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.

Financial Services 馃嚙馃嚜 Brussels 1,448 1871
21
Bpostbpostgroup.com

bpost connects people, businesses, and communities through personalized service, continuously improving products and services, offering challenging projects, collaborations, and job opportunities

Transportation, Logistics, Supply Chain and Storage 馃嚙馃嚜 Brussels 1,321 n/a
22
Fluxysfluxys.com

A global energy infrastructure group focused on transporting carbon-neutral energy carriers, storing carbon dioxide, and operating gas transmission & storage facilities

Utilities 馃嚙馃嚜 Brussels 1,259 2001
23
P&Vpv.be

Belgian cooperative insurance group offering life and non-life insurance products to individuals, businesses, and institutions through multiple brands and channels.

Insurance 馃嚙馃嚜 Brussels 1,253 n/a
24
Crelancrelan.be

Provides banking and insurance products to individuals, self-employed, entrepreneurs, and specialized financial advice for agriculture and horticulture sectors through independent agents.

Banking 馃嚙馃嚜 Brussels 1,216 2013
25
Sibelgasibelga.be

The company operates as a distribution network operator for electricity and natural gas in the Brussels region, managing distribution networks

Utilities 馃嚙馃嚜 Brussels 944 2003
26
BICSbics.com

Connecting communities and creating opportunities through global voice, messaging, IoT, roaming, and cloud communications to empower societies and businesses

Telecommunications 馃嚙馃嚜 Brussels 893 1996
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

Environmental Services 馃嚙馃嚜 Brussels 885 1968
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.

Hospitals and Health Care 馃嚙馃嚜 Brussels 854 n/a
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

Utilities 馃嚙馃嚜 Brussels 853 1913
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 829 n/a
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 777 1500
32
BNP Paribas Factoringbnpparibas.com

Factoring services across 15 countries, offering tailored domestic and international solutions with harmonized contracts and single contact point.

Financial Services 馃嚙馃嚜 Brussels 774 n/a
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

Hospitals and Health Care 馃嚙馃嚜 Brussels 598 1986
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.

Insurance 馃嚙馃嚜 Brussels 577 1911
35
Viviumvivium.be

They have a strong partnership with over a thousand independent insurance brokers, offering expert advice and tailored insurance products for individuals and businesses

Insurance 馃嚙馃嚜 Brussels 543 n/a
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

Electric Power Generation 馃嚙馃嚜 Brussels 521 1946
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

Government Administration 馃嚙馃嚜 Brussels 501 1990
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.

Investment Management 馃嚙馃嚜 Brussels 472 n/a
39
Isabelisabel.eu

Belgium's first fintech simplifies administrative processes for banks, businesses, and accounting firms by ensuring smooth and secure exchange of documents and payments

Financial Services 馃嚙馃嚜 Brussels 389 1995
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

Travel Arrangements 馃嚙馃嚜 Brussels 355 n/a
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

Banking 馃嚙馃嚜 Brussels 309 n/a
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

Insurance 馃嚙馃嚜 Brussels 268 n/a
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.

Financial Services 馃嚙馃嚜 Brussels 254 1999
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

Insurance 馃嚙馃嚜 Brussels 236 1927
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

Environmental Services 馃嚙馃嚜 Brussels 224 1982
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

Banking 馃嚙馃嚜 Brussels 213 1976
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

Banking 馃嚙馃嚜 Brussels 212 1868
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

Insurance 馃嚙馃嚜 Brussels 173 1929
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

Financial Services 馃嚙馃嚜 Brussels 168 n/a
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

Financial Services 馃嚙馃嚜 Brussels 166 1901
51
Keolis Belgiumkeolis.be

An international mobility player with a large fleet and global presence, specializing in various transportation services and innovative mobility solutions

Ground Passenger Transportation 馃嚙馃嚜 Brussels 163 1996
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

Transportation, Logistics, Supply Chain and Storage 馃嚙馃嚜 Brussels 112 2011
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

Electric Power Transmission, Control, and Distribution 馃嚙馃嚜 Brussels 100 2012
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

Insurance 馃嚙馃嚜 Brussels 80 n/a
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

Insurance 馃嚙馃嚜 Brussels 67 1926
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.

Banking 馃嚙馃嚜 Brussels 62 2013
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

Financial Services 馃嚙馃嚜 Brussels 59 2018
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.

Banking 馃嚙馃嚜 Brussels 56 2005
59
FABECfabec.eu

FABEC improves safety and efficiency in European airspace by coordinating six states to handle over six million flights annually

Aviation and Aerospace Component Manufacturing 馃嚙馃嚜 Brussels 48 2013
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

Insurance 馃嚙馃嚜 Brussels 48 1901
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

Insurance 馃嚙馃嚜 Brussels 38 n/a
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

Banking 馃嚙馃嚜 Brussels 24 2011
63
Lineaslineas.net

A logistics and supply chain company based in Brussels, Belgium, offering transportation and distribution services

Transportation, Logistics, Supply Chain and Storage 馃嚙馃嚜 Brussels 20 n/a
64
Ethias Assuranceethias.be

An insurance company in Brussels, Belgium providing various types of insurance products and services to individuals and businesses

Insurance 馃嚙馃嚜 Brussels 11 n/a
65
Banque Nagelmackers S.A.nagelmackers.be

A Brussels-based banking company offering financial services

Banking 馃嚙馃嚜 Brussels 10 n/a

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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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