William Johnstone (7 Februarie 1908 – 24 November 1996) was 'n Amerikaanse akteur. Hy was bekend vir sy rolle in die rolprente Titanic (1953) en Down Three Dark Streets (1954), en in die televisiereekse Tom Corbett, Space Cadet (1950) en As the World Turns (1956). 1953: Titanic 1954: Down Three Dark Streets 1950: Tom Corbett, Space Cadet 1956: As the World Turns William Johnstone in die Internet-rolprentdatabasis