Amtmann is a German surname derived from the historical profession and official title Amtmann in German-speaking countries. Notable people with the surname include:
Anna Amtmann, German scientist Bernard Amtmann (1907–1979), Austrian-Canadian antiquarian bookseller, bibliographer, and publisher Carla Amtmann (born 1987), Chilean politician of German-Italian descent Hans Amtmann (1906–2007), German aircraft designer
See also Ammann, a predominantly Swiss variant of the name