Schadt is a surname. Notable people with the surname include:
André Schadt, German swimmer Daniela Schadt (born 1960), German journalist and domestic partner of Joachim Gauck, President of Germany Eric Schadt (born 1965), American mathematician and computational biologist Martin Schadt (born 1938), Swiss physicist and inventor Fritz G. Schadt (1940-2001), Indonesian director and actor
See also Schad