William Pullman (born December 17, 1953) is an American actor. After graduating with a Master of Fine Arts degree in theater, he was an adjunct professor at Montana State University before deciding to pursue acting. He made his film debut in Ruthless People (1986), and starred in Spaceballs (1987), The Accidental Tourist (1988), Sleepless in Seattle (1993), While You Were Sleeping (1995), Casper (1995), Independence Day (1996), Lost Highway (1997), and Lake Placid (1999). He has appeared frequently on television, usually in TV films. Starting in the 2000s he has also acted in miniseries and regular series, including starring roles in 1600 Penn (2012–13) and The Sinner (2017–2021). In 2021, he had a recurring role in the miniseries Halston.

Pullman has also had a long stage acting career. He has appeared on Broadway several times, including in Edward Albee's The Goat, or Who Is Sylvia? in 2002.