Freudenthal is a German surname. Notable people with the surname include:
Axel Olof Freudenthal (1836–1911), Finland-Swedish philologist and politician Dave Freudenthal (born 1950), American politician Franz Freudenthal, Bolivian physician Hans Freudenthal (1905–1990), Dutch mathematician Jacob Freudenthal (1839–1907), German philosopher Karl Freudenthal (1907–1944), Nazi lawyer and SS officer Nancy D. Freudenthal (born 1954), U.S. district judge Steve Freudenthal (born 1949), American politician Thor Freudenthal (born 1972), American director and screenwriter
See also Nathan Freudenthal Leopold Jr. (1904–1971), American criminal 9689 Freudenthal, asteroid Bruntál, town in the Czech Republic, known in German as Freudenthal Freudenthal spectral theorem Freudenthal suspension theorem