George Clooney

as Capt. Billy Tyne

Mark Wahlberg

as Bobby Shatford

Diane Lane

as Christina "Chris" Cotter

John C. Reilly

as Dale "Murp" Murphy

William Fichtner

as David "Sully" Sullivan

Mary Elizabeth Mastrantonio

as Linda Greenlaw

John Hawkes

as Mike "Bugsy" Moran

Dash Mihok

as Sgt. Jeremy Mitchell