George Ralph DiCenzo (April 21, 1940 – August 9, 2010) was an American actor, and one-time associate producer for Dark Shadows.

[1] DiCenzo notably played Marty's grandfather Sam Baines in the film Back to the Future.

He appeared in more than 30 feature films, including Close Encounters of the Third Kind (1977), The Choirboys (1977), The Frisco Kid (1979), The Ninth Configuration (1980), Back to the Future (1985), About Last Night (1986), Walk Like a Man (1987), The New Adventures of Pippi Longstocking (1988), 18 Again!

George also provided the voice for Earnest Kelly in Grand Theft Auto: Vice City.

In 1976, he appeared in the CBS made-for-TV movie Helter Skelter as prosecuting attorney Vincent Bugliosi.