Guy Boyd (born April 15, 1943) is an American character actor. Boyd has starred in more than fifty films from the late 1970s to the present. He is probably best known for his role as Detective Jim McLean in Body Double (1984) and for the pivotal role of Frank Hackman on two episodes of Miami Vice.

In 1984, he was honored at the Venice Film Festival with the Golden Lion Award for Best Supporting Actor for his role in Robert Altman's adaptation of David Rabe's play Streamers (1983). In recent years Boyd was seen playing Captain Strickland on the science fiction television show Black Scorpion. He played Archbishop Kurtwell (a Catholic prelate accused of child sexual abuse) in the HBO drama The Young Pope. He also starred as Guy Canape in Past Midnight and the janitor in I’m Thinking of Ending Things.