Meinhof is a surname. Notable people with the surname include:
Carl Meinhof (1857–1944), German linguistUlrike Meinhof (1934–1976), West German left-wing militant, co-founder of the Red Army Faction, daughter of Werner MeinhofUlrike Hanna Meinhof, professor and Chair of Cultural Studies at the University of BradfordWerner Meinhof (1901–1940), German historian, brother of Carl Meinhof