Kurt Rudolf Fischer (born 1922 in Vienna), is a Jewish-Austrian philosopher who emigrated to Brno, Czechoslovakia in 1938 and to Shanghai in 1940.
He became Chinese boxing champion and started studying Philosophy at the University of California, Berkeley after World War II where he made friends with Paul Feyerabend. From 1967 to 1980 he was Professor at the University of Pennsylvania in Millersville, Pennsylvania), since 1979 he has been honorary professor at the University of Vienna.