Robert Joy (born August 17, 1951) is a Canadian actor. Joy was born in Montreal, Quebec, the son of Flora Louise (nee Pike) and Clifton Joseph Joy. He attended Oxford University and Memorial University of Newfoundland.

Joy played Madonna's punk musician boyfriend Jim in 1985's Desperately Seeking Susan.Prior to that he had played the part of Dave Matthews in 1980's Atlantic City. In 1998, Joy appeared in Gregory Hoblit's thriller Fallen, where he fit into the all star cast that included Denzel Washington, Donald Sutherland, James Gandolfini and John Goodman. In 2004, Joy made an appearance on an episode of Everybody Loves Raymond entitled "Ally's F" as Ally's math teacher, Mr. Putnam[3]. Starting in fall 2005, he joined NBC television show, E-Ring and is now a regular on CSI: NY as Dr. Sid Hammerback. Joy recently had a lead role as the simple-minded sharpshooter Charlie in George A. Romero's latest zombie movie, Land of the Dead. He last appeared onscreen in Alexandre Aja's remake of The Hills Have Eyes where he portrays a mutant named Lizard. He also starred as Ted Bedworth, father of Samaire Armstrong's character Nell Bedworth, in the 2006 romantic comedy It's a Boy/Girl Thing.

He played the character of Colonel Stevens in Aliens vs. Predator: Requiem. In addition to his acting, Joy was frequently associated with CODCO, working with the comedy troupe on many of their pre-television stage shows and appearing as a guest performer in the series. He also co-starred in the 1986 Andy Jones film, The Adventure of Faustus Bidgood, the only film that features the entire cast of CODCO.