In this article, I offer a historical analysis of how bankers in Luxembourg came to be important service providers to borrowers in the Belgian Congo and Apartheid South Africa. I demonstrate how a series of unique political and cultural factors linking Luxembourg and these two (neo)colonial regimes account for the financial activities that developed between the three jurisdictions. As such, I show that officials in the Belgian Congo and Apartheid South Africa were able to count on their Luxembourg-based bankers for a variety of finance-related services, including the provision of Eurocurrency loans and the formation of offshore companies. In doing so, the article contributes to a body of literature in the social sciences of finance that has grown significantly in recent years: on the imperial and neocolonial basis of the contemporary global financial system.