Otto Lehmann
Otto Lehmann is the name of the following people:
- Otto Lehmann (physicist) (1855–1922), German physicist
- Otto Lehmann (museum director) (1865–1951), German museum director
- Otto Lehmann (geographer) (1884–1941), Austrian geographer
- Otto Lehmann (film producer) (1889–1968), German film production manager
- Otto Lehmann (politician) (1892–1973), German politician (NSDAP)
- Otto Lehmann (resistance fighter) (1900–1936), German resistance fighter
- Otto Lehmann (trade unionist) (1913–1991), German politician (SED) and trade union official (FDGB)
- Otto Lehmann (painter) (* 1943), Swiss painter and draftsman
- Otto Lehmann-Brockhaus (1909–1999), German art historian
- Otto Lehmann-Rußbüldt (1873–1964), German pacifist and publicist
- Otto F. Lehmann (? –1954), German film industry manager