Steve Kahan (born 1939) is a retired American character actor who has appeared in many films, most prominently those of Richard Donner, his cousin. His best-known film role is in the Lethal Weapon film franchise as Capt. Ed Murphy. His first feature film role was in Superman (1978) as Armus, a detective tracking Lex Luthor's activity. The character was named after Burton Armus, a technical advisor who worked on the TV show Kojak with Donner. His last acting role was in 2006.