Tom Noonan (April 12, 1951 – February 14, 2026) was an American actor, director, and screenwriter, best known for his roles as Francis Dollarhyde in Manhunter (1986), Frankenstein's Monster in The Monster Squad (1987), Cain in RoboCop 2 (1990), The Ripper in Last Action Hero (1993), Kelso the hacker in Heat (1995), Sammy Barnathan in Synecdoche, New York (2008), Mr. Ulman in The House of the Devil (2009), Reverend Nathaniel in Hell on Wheels (2011–2014), the Pallid Man in 12 Monkeys (2015–2018) and as the voice of everyone else in Anomalisa (2015).

Noonan is also a writer and director of theatre and film. His debut feature film What Happened Was (1994) won the Dramatic Grand Jury Prize and Screenwriting Award at the Sundance Film Festival.