Ramón Antonio Gerardo Estévez (born August 3, 1940), better known by his stage name Martin Sheen, is an American actor who first achieved fame with roles in the films Badlands (1973) and Apocalypse Now (1979).
Other notable films in Sheen’s career include Gettysburg (1993), The Departed (2006), and The Amazing Spider-Man (2012). He also starred in the television series The West Wing (1999–2006) as President Josiah Bartlet.
Born and raised in the United States by immigrant parents, he adopted the stage name Martin Sheen to help him gain acting parts. He is the father of four children (Emilio, Ramón, Carlos (aka Charlie Sheen), and Renée), all of whom are actors, as is his younger brother Joe Estevez. In addition to film and television, Sheen has been active in liberal politics.