Matt Damon (Mark Whitacre)
Scott Bakula (FBI Special Agent Brian Shepard)
Joel McHale (FBI Special Agent Bob Herndon)
Melanie Lynskey (Ginger Whitacre)
Rick Overton (Terry Wilson)
William Marsh (FBI Special Agent Ken Temples)
Joshua Funk (FBI Special Agent Robert Grant)
Ann Dowd (FBI Special Agent Kate Medford)
Allan Havey (FBI Special Agent Dean Paisley)
Lucas Carroll (Alexander Whitacre)
Clancy Brown (Aubrey Daniel)
Patton Oswalt (Ed Herbst)
Hans Tester (Peter Dryer)
Wayne Pere (Sheldon Zenner)
Rome Kanda (Hirokazu Ikeda)
Raymond Ma (Kanji Mimoto)
Dann Seki (Joon Mo Suh)
Yoshio Be (Kazutoshi Yamada)
Jayden Lund (James Mutchnik)
Eddie Jemison (Kirk Schmidt)
Candy Clark (Mark Whitacre's Mother)
Frank Welker (Mark Whitacre's Father)
Tom Wilson (Mark Cheviron)
Ludger Pistor (Reinhard Richter)
Scott Adsit (Sid Hulse)
Rusty Schwimmer (Liz Taylor)
Dick Smothers (Judge Harold Baker)
Tom Smothers (Dwayne Andreas)
Bob Zany (John Dowd)
Joseph Chrest (Visiting Client)
Ann Cusack (Robin Mann)
Samantha Albert (Mary Spearing)
Jimmy Brogan (Dr. Derek Miller)
Richard S. Horvitz (Bob Zaideman)
Daniel Hagen (Scott Roberts)
Andrew Daly (Marty Allison)
Larry Clarke (Whitacre's Second Attorney)
Chic Daniel (FBI Agent at Raid)
Steve Seagren (Correctional Officer)
Tom Papa (Mick Andreas)
Tony Hale (James Epstein)
Adam Paul (FBI Special Agent Michael Bassett)
Paul F. Tompkins (FBI Special Agent Anthony D'Angelo)