The Banque Lambert was a significant family-controlled bank in Belgium, with roots going back to 1835 and long associated with the Rothschilds. It merged in 1975 with Banque de Bruxelles to form Bank Brussels Lambert, which itself was acquired in 1998 by ING Group.

The Banque de Bruxelles was a prominent bank in Brussels, established in 1871 and merged in 1975 with Banque Lambert to form Banque Bruxelles Lambert. It was Belgium's second-largest bank for most of its existence, behind the Société Générale de Belgique and, from 1934 onwards, its spun-off banking subsidiary.