William Fuller may refer to:

Politics William K. Fuller (1792–1883), U.S. Representative from New York William E. Fuller (1846–1918), U.S. Representative from Iowa William H. Fuller (1876–1943), state legislator in Pennsylvania

Sports William Fuller (athlete) (1904–?), Canadian Olympic sprinter Bill Fuller (footballer) (born 1944), defender for Crystal Palace F.C. William Fuller (American football) (born 1962), American football defensive end William Fuller (baseball) (1889–?), American baseball player William Fuller (rugby union) (1883–1957), New Zealand rugby union player Will Fuller (born 1994), American football wide receiver William "Homer" Fuller (1920–2007), American professional basketball player

Other Willie H. Fuller (1919–1995), Tuskegee Airman William Fuller (priest) (c. 1580–1659), dean of Ely William Fuller (bishop) (1608–1675), bishop of Lincoln Captain William Fuller (16??–1695), English-born leader of the Puritan forces in the Battle of the Severn and Puritan governor of Maryland William Fuller (imposter) (1670–1733), English impostor William Fuller (banker) (1705–1800), English benefactor of nonconformist causes William Allen Fuller (1836–1905), conductor on the Western & Atlantic Railroad during the American Civil War era Chief William Fuller (1873–1958), Miwok Indian Chief, see Tuolumne County, California William Charles Fuller (1884–1974), VC recipient William Fuller (poet) (born 1953), U.S. poet

See also Will Furrer (born 1968), American football quarterback