Larry Cedar (born March 6, 1955, in Pacoima, California) is an American actor. He earned an MFA in theater from UCLA, was one of the regular performers on the PBS mathematics series Square One TV and played Leon, an opium-addicted thief and faro dealer, on HBO's Deadwood. His other television work includes A.J.'s Time Travelers and Community, and his film credits include Twilight Zone: The Movie, Feds, Terry Gilliam's Fear and Loathing in Las Vegas, Constantine, Hollywoodland, Towelhead and The Crazies. On stage he won an L.A. Ovation Award for She Loves Me.