Rudi Supek (8 April 1913 –2 January 1993) was a Croatian sociologist, philosopher and a member of the Praxis School of Marxism.
He went to study clinical psychology in Paris, where he was when World War II erupted.
In 1948, after the Informbiro Resolution against Josip Broz Tito's Yugoslavia, the leader of the French Communists Maurice Thorez asked Supek, who was a member of the French Communist Party, to attack Titoism.
In 1964 Supek and several colleagues from the Zagreb Faculty of Humanities and Social Sciences founded the Praxis journal.
Supek wrote many books and articles ranging from sociology to psychopathology, anthropology, and philosophy.