The largest companies in Walloon Brabant
31,545 companies in Walloon Brabant have filed annual accounts. Here are the 50 largest by total assets: GlaxoSmithKline Biologicals leads with €17.8bn (financial year 2025).
Top 50 · Walloon Brabant
Ranked by total assets in the latest filed accounts. This is a size criterion, not an assessment.
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Most represented sectors · Walloon Brabant
Municipalities with the most companies · Walloon Brabant
- 1410 Waterloo3,528
- 1300 Wavre (Limal)2,599
- 1380 Lasne (Couture-Saint-Germain, Lasne-Chapelle-Saint-Lambert, Maransart, …)2,489
- 1420 Braine-l'Alleud2,231
- 1400 Nivelles (Monstreux)1,748
- 1325 Chaumont-Gistoux (Bonlez, Corroy-Le-Grand, Dion-Valmont, …)1,220
- 1390 Grez-Doiceau (Archennes, Biez, Bossut-Gottechain, …)1,174
- 1480 Tubize (Clabecq, Oisquercq, Saintes)1,095
- 1330 Rixensart941
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)923
- 1440 Braine-le-Château (Wauthier-Braine)875
- 1370 Jodoigne (Dongelberg, Jauchelette, Jodoigne-Souveraine, …)861
- 1435 Mont-Saint-Guibert (Corbais, Hévillers)824
- 1310 La Hulpe799
- 1332 Rixensart (Genval)748
- 1470 Genappe (Baisy-Thy, Bousval)723
Frequently asked questions
What is the largest company in Walloon Brabant?
By total assets, it is GlaxoSmithKline Biologicals (€17.8bn, financial year 2025).
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
How many companies in Walloon Brabant have filed annual accounts?
31,545 active companies are registered there and have filed at least one set of annual accounts.
Analyse companies · Walloon Brabant
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 11 Nov 2026.