Klum is a surname. Notable people with the surname include:
Heidi Klum (born 1973), German model Johanna Klum (born 1980), German TV personality Leni Klum (born 2004), German and American fashion model Mattias Klum (born 1968), Swedish photographer and film producer Otto Klum (1892–1944), American football coach
Fictional Francis Klum, a comic book villain better known as the third Mysterio