Walter Müller

Walter Müller or Mueller may refer to:
 * Walter Mueller (1894–1971), American baseball player
 * Walter H. Mueller (?–2011), American politician
 * Walter Müller (actor) (1911–1969), Austrian film actor
 * Walter Müller (biathlete) (1940–1966), Austrian Olympic biathlete
 * Walter Müller (Panzerjäger) (1914–2003), German army officer
 * Walter Müller (footballer, born 1970) (born 1970), Swiss footballer
 * Walter Müller (footballer, born 1920) (1920–2010), Swiss footballer
 * Walter Müller (footballer, born 1910) (1910–?), Swiss footballer
 * Walter Müller (German gymnast) (1930–2021), German Olympic gymnast
 * Walter Müller (Swiss gymnast) (born 1940), Swiss Olympic gymnast
 * Walter Müller (handballer) (born 1957), Swiss handballer
 * Walter Andreas Müller (born 1945), Swiss stage and film actor
 * Walter W. Müller (born 1933), German specialist in ancient South Arabia and Semitic epigraphy
 * Walter Müller (writer), Austrian writer, winner of an award at the 1979 Festival of German-Language Literature