Cast & creator
Robert Sean Leonard
Best known for Law & Order: Special Victims Unit, The Blacklist, House
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 the medical TV drama House and in the film Dead Poets Society.
Also known as: Robert Lawrence Leonard, رابرت شان لنرد
36
film credits
17
television credits
52
1951–2026 · acting roles
7.1
average across scored titles
Signature credits
Known for
Across film & television
Filmography (53)
Showing 53 of 53 credits
Law & Order: Special Victims Unit
Kenneth O'Dwyer
1999
The Blacklist
Frederick Barnes
2013
House
James Wilson
2004
The Good Wife
Del Paul
2009
The Good Doctor
Shamus O'Malley
2017
The Outer Limits
Robby Archer
1995
Tony Awards
Self - Nominee
1956
Falling Skies
Dr. Roger Kadar
2011
The Gilded Age
Matthew Forte
2022
Dead Poets Society
Neil Perry
1989
Going Live!
Self
1987
The Terror: Devil in Silver
Director Cleave
2026
The Hot Zone
Walter Humbolt
2019
The Comedy Factory
Garrett
1985
Battle Creek
Brock
2015
The Age of Innocence
Theodore "Ted" Archer
1993
Driven
Demille Bly
2001
Hallmark Hall of Fame
Jesse Chandler
1951
Much Ado About Nothing
Claudio
1993
Wasteland
Jesse's ex
1999
Working Shakespeare
2003
The I Inside
Peter
2004
The Last Days of Disco
Tom
1998
Swing Kids
Peter Müller
1993
My Best Friend Is a Vampire
Jeremy Capello
1987
The Hottest State
Thanks
2007
The Manhattan Project
Max
1986
Killer: A Journal of Murder
Henry Lesser
1996
A Painted House
Jesse Chandler
2003
Act One
Tim
2026
In the Gloaming
Danny
1997
I Love You, I Love You Not
Angel of Death
1996
A Glimpse of Hell
LT(JG) Dan Meyer
2001
House: Swan Song
Self
2012
Mr. & Mrs. Bridge
Douglas Bridge
1990
House M.D.: The Doctor Directs
2012
The Boys Next Door
Barry Klemper
1996
Ground Control
Cruise
1998
Eugene O’Neill: A Documentary Film
Self
2006
Chelsea Walls
Terry
2001
The Invention of Love
Young Housman
2001
Married to It
Chuck Bishop
1991
Normandy: The Great Crusade
Robert Sales (voice)
1994
Safe Passage
Alfred
1994
Tape
Jon
2001RSC Meets USA: Working Shakespeare
Self
Into the Deep: America, Whaling & The World
Herman Melville (voice)
2010
Reluctant Saint: Francis of Assisi
2003
Dead Poets in NYC
Self
2014
My Two Loves
Larry Taylor
1986
Standoff
Agent Jamie Doolin
1998
Bluffing It
Rusty Duggan
1987Nantucket
Narrator
2011