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