Robert Sean Leonard

Robert Sean Leonard (born February 28, 1969) is an award-winning American actor. He has regularly starred in Broadway and off-Broadway productions, but is most known for his roles on House and in Dead Poets Society.

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Known For

Law & Order: Special Victims Unit

1999 • as Kenneth O'Dwyer

The Blacklist

2013 • as Frederick Barnes

House

2004 • as James Wilson

The Good Doctor

2017 • as Shamus O'Malley

The Good Wife

2009 • as Del Paul

The Outer Limits

1995 • as Robby Archer

Filmography

2022

The Gilded Age

as Matthew Forte

TV - Released: 1/24/2022

2019

The Hot Zone

as Walter Humbolt

TV - Released: 5/27/2019

2017

The Good Doctor

as Shamus O'Malley

TV - Released: 9/25/2017

2015

Battle Creek

as Brock

TV - Released: 3/1/2015

2013

The Blacklist

as Frederick Barnes

TV - Released: 9/23/2013

2012

House: Swan Song

Movie - Released: 5/21/2012

2011

Movie

Nantucket

as Narrator

Movie - Released: 11/29/2011

2010

Into the Deep: America, Whaling & The World

as Herman Melville (voice)

Movie - Released: 5/10/2010

2009

The Good Wife

as Del Paul

TV - Released: 9/22/2009

2006

Eugene O’Neill: A Documentary Film

as Self

Movie - Released: 3/27/2006

Movie

Dead Poets: A Look Back

Movie - Released: 1/10/2006

2004

The I Inside

as Peter

Movie - Released: 3/21/2004

House

as James Wilson

TV - Released: 11/16/2004

2003

A Painted House

as Jesse Chandler

Movie - Released: 4/27/2003

2001

Driven

as Demille Bly

Movie - Released: 4/27/2001

Tape

as Jon

Movie - Released: 11/2/2001

Chelsea Walls

as Terry Olsen

Movie - Released: 9/21/2001

A Glimpse of Hell

as LT(JG) Dan Meyer

Movie - Released: 3/18/2001

The Invention of Love

as Young Housman

Movie - Released: 3/29/2001

1999

Wasteland

as Jesse's ex

TV - Released: 10/7/1999

Law & Order: Special Victims Unit

as Kenneth O'Dwyer

TV - Released: 9/20/1999

1998

The Last Days of Disco

as Tom

Movie - Released: 5/29/1998

Ground Control

as Cruise

Movie - Released: 8/26/1998

Standoff

as Agent Jamie Doolin

Movie - Released: 1/11/1998

1997

In the Gloaming

as Danny

Movie - Released: 4/20/1997

1996

The Boys Next Door

as Barry Klemper

Movie - Released: 2/4/1996

Killer: A Journal of Murder

as Henry Lesser

Movie - Released: 9/6/1996

I Love You, I Love You Not

as Angel of Death

Movie - Released: 8/28/1996

1995

The Outer Limits

as Robby Archer

TV - Released: 3/26/1995

1994

Safe Passage

as Alfred

Movie - Released: 12/1/1994

Normandy: The Great Crusade

as Robert Sales (voice)

Movie - Released: 1/1/1994

1993

Swing Kids

as Peter Müller

Movie - Released: 3/5/1993

The Age of Innocence

as Theodore "Ted" Archer

Movie - Released: 9/10/1993

Much Ado About Nothing

as Claudio

Movie - Released: 5/7/1993

1991

Married to It

as Chuck Bishop

Movie - Released: 9/11/1991

1990

Mr. & Mrs. Bridge

as Douglas Bridge

Movie - Released: 11/23/1990

1989

Dead Poets Society

as Neil Perry

Movie - Released: 6/2/1989

1987

My Best Friend Is a Vampire

as Jeremy Capello

Movie - Released: 10/1/1987

Bluffing It

as Rusty Duggan

Movie - Released: 9/13/1987

Going Live!

as Self

TV - Released: 9/26/1987

1986

The Manhattan Project

as Max

Movie - Released: 6/13/1986

My Two Loves

as Larry Taylor

Movie - Released: 4/7/1986

1985

The Comedy Factory

as Garrett

TV - Released: 6/21/1985

1956

Tony Awards

as Self - Nominee

TV - Released: 4/1/1956

1951

Hallmark Hall of Fame

as Jesse Chandler

TV - Released: 12/24/1951