Person

Robert Sean Leonard

Acting · Born 1969-02-28 · Westwood, New Jersey, USA

​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.

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  Law & Order: Special Victims Unit

  Kenneth O'Dwyer

• 

  House

  James Wilson

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  The Blacklist

  Frederick Barnes

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  The Good Doctor

  Shamus O'Malley

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  The Good Wife

  Del Paul

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  Tony Awards

  Self - Nominee

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  The Gilded Age

  Matthew Forte

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  The Outer Limits

  Robby Archer

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  Falling Skies

  Dr. Roger Kadar

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  Dead Poets Society

  Neil Perry

• 2026Act OneTim
• 2026The Terror: Devil in SilverDirector Cleave
• 2022The Gilded AgeMatthew Forte
• 2019The Hot ZoneWalter Humbolt
• 2017The Good DoctorShamus O'Malley
• 2015Battle CreekBrock
• 2013The BlacklistFrederick Barnes
• 2012House M.D.: The Doctor Directs
• 2012House: Swan SongSelf
• 2011NantucketNarrator
• 2011Falling SkiesDr. Roger Kadar
• 2010Into the Deep: America, Whaling & The WorldHerman Melville (voice)
• 2009The Good WifeDel Paul
• 2007The Hottest StateThanks
• 2006Eugene O’Neill: A Documentary FilmSelf
• 2004HouseJames Wilson
• 2004The I InsidePeter
• 2003Working Shakespeare
• 2003A Painted HouseJesse Chandler
• 2003Reluctant Saint: Francis of Assisi
• 2001TapeJon
• 2001Chelsea WallsTerry
• 2001DrivenDemille Bly
• 2001The Invention of LoveYoung Housman
• 2001A Glimpse of HellLT(JG) Dan Meyer
• 1999WastelandJesse's ex
• 1999Law & Order: Special Victims UnitKenneth O'Dwyer
• 1998Ground ControlCruise
• 1998The Last Days of DiscoTom
• 1998StandoffAgent Jamie Doolin
• 1997In the GloamingDanny
• 1996Killer: A Journal of MurderHenry Lesser
• 1996I Love You, I Love You NotAngel of Death
• 1996The Boys Next DoorBarry Klemper
• 1995The Outer LimitsRobby Archer
• 1994Safe PassageAlfred
• 1994Normandy: The Great CrusadeRobert Sales (voice)
• 1993The Age of InnocenceTheodore "Ted" Archer
• 1993Much Ado About NothingClaudio
• 1993Swing KidsPeter Müller
• 1991Married to ItChuck Bishop
• 1990Mr. & Mrs. BridgeDouglas Bridge
• 1989Dead Poets SocietyNeil Perry
• 1987My Best Friend Is a VampireJeremy Capello
• 1987Going Live!Self
• 1987Bluffing ItRusty Duggan
• 1986The Manhattan ProjectMax
• 1986My Two LovesLarry Taylor
• 1985The Comedy FactoryGarrett
• 1956Tony AwardsSelf - Nominee
• 1951Hallmark Hall of FameJesse Chandler
• —RSC Meets USA: Working ShakespeareSelf