Alvin Sargent (April 12, 1927–May 9, 2019) was an American screenwriter. He won two Academy Awards for Best Adapted Screenplay, for Julia (1977) and Ordinary People (1980). Sargent's other works include screenplays of the films The Sterile Cuckoo (1969), The Effect of Gamma Rays on Man-in-the-Moon Marigolds (1970), Paper Moon (1973), Nuts (1987), White Palace (1990), What About Bob? (1991), Unfaithful (2002), Spider-Man 2 (2004), Spider-Man 3 (2007), and The Amazing Spider-Man (2012).

Alvin Sargent was born Alvin Supowitz in Philadelphia, Pennsylvania, the son of Esther (née Kadansky) and Isaac Supowitz. He was of Russian Jewish descent. Sargent attended Upper Darby High School, leaving at age 17 to join the Navy. As of 2006, he was one of 35 alumni to be on the school's Wall of Fame.