Ethan Green Hawke (born November 6, 1970) is an American actor, writer and film director. He made his feature film debut in 1985 with River Phoenix in the movie Explorers, before making a supporting appearance in the 1989 drama Dead Poets Society which is considered his breakthrough role. He then appeared in such films as White Fang (1991), A Midnight Clear (1992), and Alive (1993) before taking a role in the 1994 Generation X drama Reality Bites, for which he received critical acclaim. In 1995 he starred in the romantic drama Before Sunrise, and later in its sequel Before Sunset (2004).

In 2001, Hawke was cast in a supporting role in Training Day (2001), for which he received a Screen Actors Guild and Academy Award nomination in the Best Supporting Actor category. Other films have included the science fiction feature Gattaca (1997), the title role in Michael Almereyda's Hamlet (2000), the action thriller Assault on Precinct 13 (2005), and the crime drama Before the Devil Knows You're Dead (2007).

Hawke has appeared in numerous theater productions including The Seagull, Henry IV, Hurlyburly, The Cherry Orchard, The Winter's Tale and The Coast of Utopia, for which he received a Tony Award nomination. He made his directorial debut with the 2002 independent feature Chelsea Walls. In November 2007, Hawke directed his first play, Jonathan Marc Sherman's Things We Want. Aside from acting, he has written two novels, The Hottest State (1996) and Ash Wednesday (2002). Between 1998 and 2004 Hawke was married to actress Uma Thurman.