<P> Theodore Raymond `` T.R. '' Knight ( born March 26 , 1973 ) is an American actor . He is best known for his role as Dr. George O'Malley on the ABC medical drama Grey 's Anatomy . Having acted on stage since the age of five , Knight had starred on Broadway , off - Broadway , and theatre productions in his home state of Minnesota . He received a Drama Desk Award nomination for his performance in MCC Theater 's Scattergood in 2003 . </P>
<P> Theodore Raymond `` T.R. '' Knight ( born March 26 , 1973 ) is an American actor . He is best known for his role as Dr. George O'Malley on the ABC medical drama Grey 's Anatomy . Having acted on stage since the age of five , Knight had starred on Broadway , off - Broadway , and theatre productions in his home state of Minnesota . He received a Drama Desk Award nomination for his performance in MCC Theater 's Scattergood in 2003 . </P>
who played george o'malley in grey 's anatomy
who played george o'malley in grey 's anatomy
Theodore Raymond `` T.R. '' Knight
Theodore Raymond `` T.R. '' Knight