Robert Sean Leonard is an American actor best known for his role as an aspiring actor Neil Perry in the 1989 film Dead Poets Society, and for playing Dr. James Wilson on the television drama series House.
Leonard won a 2001 Tony Award for Best Actor (Featured Role - Play) for his performance in The Invention of Love.
In 2003, he was nominated in the same category for his performance in Long Day's Journey into Night, which also starred Brian Dennehy, Vanessa Redgrave and Philip Seymour Hoffman. He was also on stage in The Violet Hour opposite Scott Foley.
Leonard's extensive theatre credits include the Broadway productions of The Music Man; The Iceman Cometh with Kevin Spacey; Arcadia; Candida, for which he received a Tony nomination; The Speed of Darkness; Breaking the Code; and Brighton Beach Memoirs.
He also appeared in the West End production of Our Town.
In 2001 he starred in Richard Linklater's film Tape with Ethan Hawke and Uma Thurman, and was in the ensemble drama Chelsea Walls, directed by Hawke and based on the play of the same name.
Born in New Jersey, Leonard began his career at the age of 14 at the Ridgewood Theater in New York. At 19, he made his film debut in the acclaimed Dead Poets Society, starring opposite Robin Williams and Ethan Hawke.
Leonard's additional credits include the films The Last Days of Disco with Chloë Sevigny; Much Ado About Nothing with Denzel Washington and Emma Thompson; The Age of Innocence with Daniel Day-Lewis, Michelle Pfeiffer and Winona Ryder; Swing Kids; Mr. & Mrs. Bridge with Paul Newman and Joanne Woodward; and the telefilm A Painted House, based on the novel by John Grisham.