This is a list of the constituent colleges of the Old University of Leuven (founded 1425; suppressed 1797). Many of them are listed heritage sites and some are in use by the current Katholieke Universiteit Leuven.
Four of the colleges were specifically teaching colleges for undergraduates in the Liberal Arts, and these were called Pedagogies.
The others provided residential facilities for students studying at the advanced faculties (law, medicine, theology).