Otto Müller

Otto Müller or Mueller may refer to:


 * Otto Mueller (1874–1930), German painter of the Die Brücke movement
 * Otto Müller (painter) (1898–1979), German painter from Halle, Saxony-Anhalt
 * Otto Mueller (politician) (1875–1973), American politician in Wisconsin
 * Otto Müller (novelist) (1816–1894), German novelist
 * Otto Müller (water polo) (1910–?), Austrian Olympic water polo player
 * Otto Müller (wrestler) (1899–?), Swiss freestyle wrestler
 * Otto Friedrich Müller (1730–1784), Danish naturalist
 * Otto Müller (priest) (1870–1944), German priest, member of German Resistance in Nazi Germany
 * Otto Thott Fritzner Müller (1864–1944), Norwegian politician
 * Otto Müller or Walther Otto Müller (1833–1887), German botanist specializing in cryptogamenae