Woodrow Tracy Harrelson (born July 23, 1961) is an American actor and playwright. He is the recipient of various accolades, including a Primetime Emmy Award and two Screen Actors Guild Awards, in addition to nominations for three Academy Awards and four Golden Globe Awards.

Harrelson first became known for his role as bartender Woody Boyd on the NBC sitcom Cheers (1985–1993), for which he won a Primetime Emmy Award for Outstanding Supporting Actor in a Comedy Series from a total of five nominations. He went on to receive three Academy Award nominations: Best Actor for The People vs. Larry Flynt (1996), and Best Supporting Actor for both The Messenger (2009) and Three Billboards Outside Ebbing, Missouri (2017). Harrelson was also nominated for a Primetime Emmy Award for Outstanding Lead Actor in a Drama Series for his role as Marty Hart in the crime anthology series True Detective (2014).