Bill or William Fritz may refer to:
Bill Fritz (pole vaulter) (1892–1941), American athlete who competed in the 1912 Summer Olympics William Fritz (sprinter) (1914–1995), Canadian athlete who competed in the 1936 Summer Olympics William Harold Fritz (1928–2009), geologist with the Geological Survey of Canada William J. Fritz, American geologist See also J. W. Fritz, known as Will, Dallas police officer