Thomas Edward Sizemore Jr. (/ˈsaɪzmɔːr/; November 29, 1961 – March 3, 2023) was an American actor. He played supporting roles in Born on the Fourth of July (1989), Harley Davidson and the Marlboro Man (1991), Passenger 57 (1992), True Romance (1993), Natural Born Killers (1994), Strange Days (1995), Heat (1995), The Relic (1997), Saving Private Ryan (1998), Bringing Out the Dead (1999), Black Hawk Down (2001), Pearl Harbor (2001) and the revival series of Twin Peaks (2017). He provided the voice for Sonny Forelli in the video game Grand Theft Auto: Vice City (2002).

Early life and education
Sizemore was born on November 29, 1961, in Detroit, Michigan. His mother, Judith (née Schannault), was a member of the city of Detroit ombudsman staff, and his father, Thomas Edward Sizemore Sr., was a lawyer and philosophy professor. He was raised Roman Catholic. Sizemore stated that his maternal grandfather was of French and Native American ancestry, and also that his grandmother was African-American.