2000
• Emmy (Primetime), Outstanding Lead Actor in a Drama Series for Law & Order

1999
• Screen Actors Guild Awards, Outstanding Performance by a Male Actor in a Drama Series for Law & Order
• Emmy (Primetime), Outstanding Lead Actor in a Drama Series for Law & Order

1998
• Screen Actors Guild Awards, Outstanding Performance by a Male Actor in a Drama Series for Law & Order

1997
• Emmy (Primetime), Outstanding Lead Actor in a Drama Series for Law & Order

1995
• Golden Globe, Best Performance by an Actor in a Television Series - Drama for Law & Order

1994
• Emmy (Primetime), Outstanding Lead Actor in a Miniseries or a Movie for I'll Fly Away: Then and Now

1993
• Golden Globe, Best Performance by an Actor in a Television Series - Drama for I'll Fly Away
• Emmy (Primetime), Outstanding Lead Actor in a Drama Series for I'll Fly Away

1992
• Golden Globe, Best Performance by an Actor in a Television Series - Drama for I'll Fly Away
• Emmy (Primetime), Outstanding Lead Actor in a Drama Series for I'll Fly Away

1984
• Academy Award, Best Actor for The Killing Fields
• British Academy of Film & Television Arts, Actor for The Killing Fields
• Golden Globe, Best Performance By an Actor in a Motion Picture - Drama for The Killing Fields

1983
• Golden Globe, Best Performance by an Actor in a Miniseries or Motion Picture Made for Television for Oppenheimer

1974
• Golden Globe, Best Performance By an Actor in a Supporting Role in a Motion Picture for The Great Gatsby