Ivan Simon Cary Elwes (born 26 October 1962), known professionally as Cary Elwes, is an English actor. The son of Dominick Elwes and Tessa Georgina Kennedy, Elwes acted in off-Broadway plays during college and moved to the United States in the early 1980s. He is known for his role as Westley in the cult classic The Princess Bride and for his role as Dr. Lawrence Gordon in Saw.

He has also appeared in box office successful films such as Days of Thunder, Hot Shots!, Twister, Liar, Liar and No Strings Attached. He has had recurring roles in television series such as The X-Files playing Brad Follmer.