Bruno Leoni (April 26, 1913–November 21, 1967) was an Italian classical-liberal political philosopher and lawyer.

Besides being editor for the political science journal Il Politico, Leoni was also involved as secretary and later president of the Mont Pelerin Society. He taught at the University of Pavia from 1942 on to his death.

A well-known book of him is Freedom and the Law. Carlo Lottieri has written an important monograph on his thought (Le ragioni del diritto. Libertà individuale e ordine giuridico nel pensiero di Bruno Leoni, Soveria Mannelli: Rubbettino, 2006).