William James Murray (born September 21, 1950) is an American actor, comedian, and writer. He first gained exposure on Saturday Night Live, a series of performances that earned him his first Emmy Award, and later starred in comedy films"including Meatballs (1979), Caddyshack (1980), Stripes (1981), Tootsie (1982), Ghostbusters (1984), Scrooged (1988), Ghostbusters II (1989), What About Bob? (1991), and Groundhog Day (1993). He also co-directed Quick Change (1990).

Murray garnered additional critical acclaim later in his career, starring in Lost in Translation (2003), which earned him a Golden Globe and a BAFTA Award for Best Actor, as well as an Academy Award nomination for Best Actor. He also received Golden Globe nominations for his roles in Ghostbusters, Rushmore (1998), Hyde Park on Hudson (2012), St. Vincent (2014), and the HBO miniseries Olive Kitteridge (2014), for which he later won his second Primetime Emmy Award.

Murray received the Mark Twain Prize for American Humor in 2016. His comedy is known for its deadpan delivery.