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The 30 largest Non-profit Organizations companies in Brussels

Tamtam tracks 30 Non-profit Organizations companies headquartered in Brussels. This list ranks all of them by number of employees on LinkedIn, led by Médecins Sans Frontières Belgium, ELSA and CEN and CENELEC. Their median headcount is 185. Half of them were founded in 1985 or later.

🇧🇪 Brussels30 companiesUpdated Oct 10, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Médecins Sans Frontières Belgiummsf-azg.be

Delivering medical and humanitarian aid globally for 40 years, with a team of 22,000 employees from diverse backgrounds Operations in 60+ countries

Non-profit Organizations 🇧🇪 Brussels 2,654 1971
2
ELSAelsa.org

An association with 60,000 law students and recent graduates fostering legal education, mutual understanding, and social responsibility in Europe

Non-profit Organizations 🇧🇪 Brussels 1,089 1981
3
CEN and CENELECcencenelec.eu

Development of European standards and specifications to remove trade barriers, foster innovation, and support industry and consumers across Europe.

Non-profit Organizations 🇧🇪 Brussels 735 n/a
4
GS1gs1.org

Dedicated to global standards and solutions. Improved supply chain efficiency, safety, visibility across physical and digital channels in 25 sectors. Best-known symbol: barcode.

Non-profit Organizations 🇧🇪 Brussels 732 1973
5
Kind en Gezinkindengezin.be

Providing preventive family support, childcare services, and adoption assistance to promote the well-being of young children and families.

Non-profit Organizations 🇧🇪 Brussels 696 1984
6
DUO for a JOBduoforajob.org

Mentoring young job seekers from diverse backgrounds with experienced professionals, supporting their job search and fostering intergenerational exchange.

Non-profit Organizations 🇧🇪 Brussels 657 2013
7
Smart Belgiumsmart.coop

Smart offers shared tools, support, and workspaces for professionals to pursue their work, allowing them to balance social safety and entrepreneurship

Non-profit Organizations 🇧🇪 Brussels 554 1998
8
Board of European Students of Technologybest.eu.org

A non-profit organization providing communication, cooperation, and exchange opportunities for European students in technology, focusing on international mindset and career development

Non-profit Organizations 🇧🇪 Brussels 435 1989
9
Agoriaagoria.be

A federation representing over 2000 technology companies in Belgium, providing services and positions focusing on digitalization, talent management, market developments, and more

Non-profit Organizations 🇧🇪 Brussels 384 1946
10
King Baudouin Foundationkbs-frb.be

Support social justice, health, culture, education, environment, and international development to enhance public interest and social cohesion worldwide.

Non-profit Organizations 🇧🇪 Brussels 382 1976
11
UNIZOunizo.be

An organization representing over 110,000 entrepreneurs in Belgium, providing advocacy, networking opportunities, training, and resources to support their interests and businesses since 1899

Non-profit Organizations 🇧🇪 Brussels 362 1948
12
Sabamsabam.be

Collects, distributes, and manages the copyrights of thousands of artists from various artistic disciplines in Belgium and worldwide

Non-profit Organizations 🇧🇪 Brussels 267 1922
13
Les Scouts ASBLlesscouts.be

Non-profit youth organization providing educational and recreational activities for children aged 6 to 18, fostering growth and community.

Non-profit Organizations 🇧🇪 Brussels 205 1912
14
Red Cross EU Officeredcross.eu

Representation of National Red Cross Societies and IFRC in the EU to influence policy, legislation, and funding for humanitarian aid and support vulnerable communities

Non-profit Organizations 🇧🇪 Brussels 199 1983
15
Trias NGO - Globalworldwide.trias.ngo

The organization supports entrepreneurs and farmers by removing obstacles such as lack of education or resources, helping them access training, funding, markets, and networks

Non-profit Organizations 🇧🇪 Brussels 185 1959
16
Kom op tegen Kankerkomoptegenkanker.be

A non-governmental organization fighting against cancer by raising funds for research, supporting care projects, and advocating for prevention and policy changes

Non-profit Organizations 🇧🇪 Brussels 177 1989
17
International Trade Union Confederation - ITUCituc-csi.org

Global advocate for workers' rights, promoting trade union democracy, international cooperation, and advocating for labor rights within major global institutions and organizations

Non-profit Organizations 🇧🇪 Brussels 174 2006
18
11.11.1111.be

International solidarity organization focused on combating exploitation and advocating for fair distribution of power and resources for a more just world

Non-profit Organizations 🇧🇪 Brussels 173 1966
19
Erasmus Mundus Associationem-a.eu

An NGO supporting students and alumni of Erasmus Mundus Joint Degrees and Joint Doctorates, backed by the European Commission

Non-profit Organizations 🇧🇪 Brussels 173 2006
20
EFMD Globalefmdglobal.org

International organization fostering management development through networking, accreditation, and knowledge dissemination among academic, business, and public service members worldwide.

Non-profit Organizations 🇧🇪 Brussels 162 1972
21
AEGEE / European Students'​ Forumaegee.org

A student organization promoting cooperation, integration, and youth employment in Europe through non-formal education, volunteering, and leadership development

Non-profit Organizations 🇧🇪 Brussels 156 1985
22
EU MedBridgeeumedbridge.eu

The regional programme promotes EU awareness in the Southern Neighborhood through campaigns, content sharing, opinion polls, youth engagement, and digital communication

Non-profit Organizations 🇧🇪 Brussels 147 n/a
23
GIEgie.eu

Represents European gas infrastructure operators focusing on transmission, storage, import terminals, and promoting secure, integrated, climate-neutral energy supply.

Non-profit Organizations 🇧🇪 Brussels 135 2005
24
Cultuurconnectcultuurconnect.be

Facilitating collaboration between cultural institutions, libraries, governments, tech partners, and artistic initiatives to support local communities and promote cultural activities

Non-profit Organizations 🇧🇪 Brussels 67 2016
25
WWF European Policy Officewwf.eu

Advocating for sustainable EU policies to protect nature and promote environmental well-being across Europe and globally through expert engagement.

Non-profit Organizations 🇧🇪 Brussels 58 1989
26
Fedustriafedustria.be

Fedustria is the Belgian federation of the textile, wood, and furniture industries, providing professional support, benefits, and advocacy for its members

Non-profit Organizations 🇧🇪 Brussels 46 2007
27
International Brain Research Organization (IBRO)ibro.org

Global neuroscience association supporting research, education, training, and outreach through publications, partnerships, and international collaboration to advance neuroscience worldwide

Non-profit Organizations 🇧🇪 Brussels 39 1961
28
euRobotics aisbleu-robotics.net

A Brussels-based international non-profit association promoting Europe's competitiveness in robotics technology, collaborating with the European Commission for innovation in robotics

Non-profit Organizations 🇧🇪 Brussels 33 2012
29
European Brain Council (EBC)braincouncil.eu

A non-profit organization in Brussels promoting brain research to improve the lives of 179 million Europeans with brain conditions

Non-profit Organizations 🇧🇪 Brussels 26 2002
30
Femmes Fièresfemmesfieres.com

An ecosystem supporting entrepreneurs in launching and growing their businesses, providing support for idea validation and business acceleration Reach out for assistance!

Non-profit Organizations 🇧🇪 Brussels 3 2019

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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 10, 2026.

More company lists in Brussels

The same list elsewhere in Belgium