Otto Jahn
Otto Jahn is the name of the following people:
- Otto Jahn (archaeologist) (1813–1869), German archaeologist, philologist and musicologist
- Otto von Jahn (1833-1891), German lieutenant general
- Otto Jahn (politician) (1898– ??), German politician (CDU), Member of the Bundestag
- Otto Jahn (painter) (1900–1945), Austrian painter
- Otto Heinz Jahn (1906–1953), German writer and screenwriter