Theodore Raymond "T. R." Knight (born March 26, 1973) is an American actor. Knight's most high-profile role to date was his role as Dr. George O'Malley on ABC's medical drama Grey's Anatomy.
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Known For
Forge
Sandy Baker
2025
Adam the First
Jacob Jr.
2024
The Flight Attendant
Davey Bowden · (12 episodes)
2020
The Comey Rule
Reince Priebus · (1 episode)
2020
I Am a Seagull
TR / Medvedenko
2019
The Bravest Knight
Sir Cedric (voice) · (26 episodes)
2019
The Lavender Scare
Drew Ference (voice)
2019
God Friended Me
Gideon · (1 episode)
2018
Hello Again
Carl
2017
Will & Grace
Dexter Murphy · (1 episode)
2017
Genius
J. Edgar Hoover · (3 episodes)
2017
Genius
Max Jacob · (6 episodes)
2017
The Catch
Tommy · (1 episode)
2016
11.22.63
Johnny Clayton · (8 episodes)
2016
A Year and Change
Kenny
2015
42
Harold Parrott
2013
The Good Wife
Jordan Karahalios · (7 episodes)
2009
Max's Words
Narrator
2007
The Last Request
Jeff
2006
Grey's Anatomy
George O'Malley · (103 episodes)
2005
The Tony Danza Show
Self · (1 episode)
2004
The Ellen DeGeneres Show
Self · (2 episodes)
2003
Charlie Lawrence
Ryan Lemming · (7 episodes)
2003
Garmento
Daniel
2002
Law & Order: Criminal Intent
Neil Colby · (1 episode)
2001
CSI: Crime Scene Investigation
Zero Adams · (1 episode)
2000
Law & Order: Special Victims Unit
Gabriel Thomas / Brian Smith · (1 episode)
1999
Frasier
Alex · (1 episode)
1993