Company lists · Data refreshed September 2026

Top 21 Membership organizations based in Belgium

RevenueBase identified 44 company matches for membership organizations associated with Belgium as of September 2026 and tracks 320 professional contacts across them, including 84 with verified work emails. Brussels is the largest hub.

This list covers company matches for membership organizations associated with Belgium, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
44Companies
320Contacts tracked
84Verified emails
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The 21 largest membership organizations based in Belgium

Ranked by team size
Top 21 of 44 company matches for membership organizations based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSt-lambrechts-woluwe, BelgiumHQ recorded Sep 20, 202651-20068 contacts →

Exact match

“Notre slogan "Nous en faisons toujours plus" met en exergue notre volonté de satisfaire sans cesse notre clientèle.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchBrussels, BelgiumHQ recorded Sep 20, 2026501-1,00040 contacts →

Exact match

“Depuis sa création en 2013, le B19 s'est imposé comme un cercle d'affaires moderne, rassemblant plus de membres actifs et dynamiques.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBrussels, BelgiumHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“EPP's mission is to provide professional guidance and advocating on behalf of the global pricing and RGM community to create a quadruple win : for your company, trade partners…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLouvain-la-neuve, BelgiumHQ recorded Sep 20, 20261-1015 contacts →

Exact match

“Aujourd’hui, le Cercle du lac compte plus de 600 membres et plus de 3.500 événements ont été organisés depuis sa création.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchAntwerp, BelgiumHQ recorded Sep 20, 20261-1014 contacts →

Exact match

“ifasic is a not for profit educational conference, seminar and events provider.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchBrussels, BelgiumHQ recorded Sep 20, 2026201-50013 contacts →

Exact match

“BE STRONGER ASBL est un groupement de courtiers d’assurances dédicacés au monde des entrepreneurs et de leurs entreprises.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchIxelles, BelgiumHQ recorded Sep 20, 20261-1011 contacts →

Exact match

“Full Circle House is a new members club for creative, dynamic & forward-thinking people, from Brussels and beyond.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchVliermaal, BelgiumHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“Poggio versterkt de commerciële slagkracht van haar leden.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchAntwerp, BelgiumHQ recorded Sep 20, 202611-508 contacts →

Exact match

“We are a buying group that provides added value to resellers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchHerstal, BelgiumHQ recorded Sep 20, 20261-108 contacts →

Exact match

“SymbiOZ a pour objectif de fédérer ses membres au sein d’un réseau convivial visant à faciliter le développement de leurs entreprises et de leurs équipes.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchEupen, BelgiumHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Complete support for kitchen retailers DER KREIS gives kitchen retailers more clout to stand firmly in the market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchAalst, BelgiumHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Avoid revenue leakage, close your back door!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchBrussel, BelgiumHQ recorded Sep 20, 20261-105 contacts →

Exact match

“We are a community that work in the media & advertising industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchBrussels, BelgiumHQ recorded Sep 20, 20261-104 contacts →

Exact match

“KMS Partners est une association d’avocats et de médiateurs regroupant Patrick Kileste, Michel Caluwaerts, Cécile Staudt et Dimitri De Ryck.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchIzegem, BelgiumHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Online betalingen innen & ledenbeheer » | Realtime, laagdrempelig, minder administratie » | Verenigingen, scholen, professionals, BE 1027.370.154”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchLummen, BelgiumHQ recorded Sep 20, 20261-103 contacts →

Exact match

“BNI Limburg Turnhout is een marketing aanbevelingsorganisatie met als doel extra omzet te genereren bij BNI leden aan de hand van een unieke methode.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchRanst, BelgiumHQ recorded Sep 20, 20261-103 contacts →

Exact match

“Als je de week positief beëindigt word je lid van de Wolves & Warriors Brotherhood, een selecte groep van topondernemers die elkaar ondersteunen in leven en werken.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchBrussels, BelgiumHQ recorded Sep 20, 202611-501 contacts →

Exact match

“Advancing Associations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchBrussels, BelgiumHQ recorded Sep 20, 202611-501 contacts →

Exact match

“FECOFI continue à se battre pour défendre au mieux les intérêts collectifs et individuels de ses membres et de la profession comptable et fiscale par le biais de lobbying et via…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchGhent, BelgiumHQ recorded Sep 20, 20261-101 contacts →

Exact match

“BSAE is de vereniging van verenigingsprofessionals.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAntwerp, BelgiumHQ recorded Sep 20, 20261-101 contacts →

Exact match

“Klubs, dé totaaloplossing voor verenigingen, clubs en federaties!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 21 of 44 membership organizations based in Belgium

See the full list, filter by size, metro and specialty, and access 84 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Membership organizations based in Belgium at a glance

As of Sep 20, 2026
26.2%Verified-email coverage
7.3Average contacts per company
1-10Median size (employees)
13.6%Largest-city concentration · Brussels
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
9
51-200
2
201-500
1
501-1,000
2

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 44 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Belgium whose business descriptions match “membership organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 84 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “membership organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many membership organizations are there based in Belgium?

RevenueBase identified 44 company matches for membership organizations associated with Belgium as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Mutualia, Mutualité Neutre tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most membership organizations?

Brussels leads with 6 company records, followed by Ghent (2) and Louvain-La-Neuve (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 84 professional contacts with verified work emails tracked across these 44 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.