Ivan Simon Cary Elwes (; born 26 October 1962) is an English actor and writer. He is known for his leading film roles as Westley in The Princess Bride (1987), Robin Hood in Robin Hood: Men in Tights (1993), and Dr. Lawrence Gordon in the Saw film series. Elwes' other performances in films include Glory (1989), Hot Shots! (1991), The Jungle Book (1994), Days of Thunder (1990), Bram Stoker's Dracula (1992), Twister (1996), Kiss the Girls (1997), Liar Liar (1997), Cradle Will Rock (1999), Shadow of the Vampire (2000), The Cat's Meow (2001), Ella Enchanted (2004), The Alphabet Killer (2008), A Christmas Carol (2009), No Strings Attached (2011), and The Hyperions (2022). He has appeared on television in a number of series including The X-Files, Seinfeld, From the Earth to the Moon, Psych, Life in Pieces, Stranger Things, and The Marvelous Mrs. Maisel.