Freudenthal is a surname and may refer to:
- Axel Olof Freudenthal (1836–1911), a Finland-Swedish philologist and politician
- Dave Freudenthal, a U.S. politician
- Hans Freudenthal (1905–1990), a Dutch mathematician
- Heinrich Freudenthal, a founder of Deutsche Pentosin-Werke GmbH
- Jacob Freudenthal (1839-1907), a German philosopher
- Matthijs Freudenthal, a Dutch palaeontologist, former curator of fossil vertebrates of the National Museum of Natural History, Leiden, the Netherlands
- Nathan Freudenthal Leopold, Jr. (1904–1971), an American murderer
- Nancy D. Freudenthal (b. 1954), an American lawyer.
- Thor Freudenthal (b. 1972), an American director and screenwriter
It is also the name of :
- 9689 Freudenthal, an asteroid
- Bruntál, a town in the Czech Republic, known in German as Freudenthal