Tom Sizemore was an American actor.

He began his career with supporting appearances in Born on the Fourth of July (1989), Lock Up (1989) and Blue Steel (1990). Later, he had more prominent roles in films like Passenger 57 (1992), True Romance (1993), Striking Distance (1993), Natural Born Killers (1994), Strange Days (1995), Heat (1995) and The Relic (1997).

In 1998, Sizemore starred in Saving Private Ryan, his most commercially successful film. He later appeared in Bringing Out the Dead (1999), Black Hawk Down (2001) and Pearl Harbor (2001). Sizemore received a Golden Globe nomination for his lead role in the television film Witness Protection (1999).

In 2007, VH1 aired the reality series Shooting Sizemore (2007), which depicted Sizemore's struggle to regain his career amid addictions to methamphetamine and heroin. Sizemore also participated in other reality series related to his addiction, including Celebrity Rehab with Dr. Drew (2010) and Celebrity Rehab Presents Sober House (2010). He appeared in the revival series of Twin Peaks (2017).