William Hopper (1915–1970) was an American actor.
William or Bill Hopper may also refer to:
People William Hopper (industrialist) (1816-1885), Scottish industrialist and sports proponent in Imperial Russia Bill Hopper (baseball) (1891–1965), American baseball player Bill Hopper (footballer) (born 1938), English footballer Bill Hopper (rugby league) (1922–2008), Welsh rugby league footballer William Hopper (politician) (born 1929), British banker and politician William DeWolf Hopper (1858–1935), American actor William Hopper (1966–2017), Canadian author of The Heathen's Guide to World Religions and other works
Other uses Bill hopper (furniture), a receptacle used in the United States House of Representatives
See also Wilbert Hopper (1933–2006), Canadian civil servant and businessman