William, Bill, or Billy Fulton may refer to:
Law and politics United States William B. Fulton (politician) (William Burns Fulton 1877–1960), American politician from Virginia William D. Fulton (William Duane Fulton, 1864–1925), American politician in Ohio William J. Fulton (William John Fulton, 1875–1961), American jurist from Illinois William S. Fulton (William Savin Fulton, 1795–1844), American lawyer and politician from Arkansas William T. Fulton (1835–1912), American politician and lawyer from Pennsylvania William Fulton (urban planner) (born 1955), American urban planner and mayor of Ventura, California
Elsewhere Bill Fulton (Victorian politician) (William Oliver Fulton, 1891–1975) Bill Fulton (Queensland politician) (William John Fulton, 1909–1988)
Sports William Fulton (1880s footballer) (fl. 1884), Scottish international footballer William Fulton (footballer, fl. 1897–1925), Scottish footballer William Fulton (boxer) (born 1916), Rhodesian boxer Bill Fulton (baseball) (William David Fulton, born 1963), American baseball player Grant Fulton (William Grant Fulton, born 1973), South African field hockey player Billy Fulton (Andrew James Fulton, born 1977), New Zealand rugby union player
Other people William B. Fulton (U.S. Army) (1919–2006), United States Army officer William Fulton (mathematician) (William Edgar Fulton, born 1939), American mathematician William James Fulton (born 1968), Northern Irish loyalist William Shirley Fulton (1880–1964), American archeologist