William Fischer may refer to: Bill Fischer (Australian footballer) (1883–1917), Australian rules footballer and soldier Bill Fischer (American football) (1927–2017), American football player Bill Fischer (baseball) (1930–2018), former American Major League Baseball pitcher William Fischer (baseball) (1891–1945), catcher in Major League Baseball William S. Fischer, American composer, conductor, arranger, and producer
See also Vilyam Genrikhovich Fisher (1903–1971), Soviet intelligence officer William J. Fischer Housing Development, New Orleans public-housing development Willy Fischler (born 1949), Belgian physicist William Fisher (disambiguation)