John Marley (born Mortimer Marlieb, October 17, 1907 – May 22, 1984) was an American actor who was known for his role as Phil Cavalleri in Love Story and as Jack Woltz— the defiant film mogul who awakens to find the severed head of his prized horse in his bed—in The Godfather (1972). He starred in John Cassavetes' feature Faces (1968) and appeared in The Glitter Dome (1984).