Brad Pitt Producer
Leonardo DiCaprio Billy
Matt Damon Colin
Mark Wahlberg Dignam
Jack Nicholson Costello
Martin Scorsese Director
Vera Farmiga Madolyn
Ray Winstone Mr. French
John Franchi Pedestrian (uncredited)
Rebecca Love Adult Film Actress (uncredited)
Alec Baldwin Ellerby
Anthony Anderson Brown
Martin Sheen Queenan
Carla Raij Location Manager
Larry Kaplan Unit Publicist
Jac Rubenstein Dialogue Editor
Johnny Cicco Crack Addict
Sian Grigg Makeup Artist
Robert Legato Visual Effects Supervisor
Gurdeep Singh Pakistani Proprietor
Brendan Burke Irish Thug (uncredited)
Kevin Corrigan Cousin Sean
Kristi Zea Production Design
Terry Serpico Detective #3 Tailing Queenan
John Farrer Priest at Billy's Funeral
Joseph P. Reidy Priest w/ Young Colin, Assistant Director
Mark Rolston Delahunt
David O'Hara Fitzy
Chance Kelly Exam Instructor
John Cenatiempo Providence Gangster #2
James Badge Dale Barrigan
Craig 'Radio Man' Castaldo Crack House Denizen
Shay Duffin Bartender at Brasserie
G. Mac Brown Executive Producer
Thelma Schoonmaker Editor
Dorothy Lyman Woman at Bar #1
Kathryn Blondell Hairstylist
Joy Zapata Hairstylist
Armen Garo Providence Gangster #1
Mick O'Rourke Jimmy Bags
Steve Kirshoff Special Effects Coordinator
Kay Georgiou Hairstylist
Paul A. Levin Post Production Supervisor
G.A. Aguilar Stunt Coordinator, Second Unit Director
Doug Davison Executive Producer
Brian Haley Detective #2 Tailing Queenan
Roy Lee Executive Producer
David Fischer Executed Man
Lawrence Cameron Steele Academy Firearms Instructor (uncredited)
Howard Shore Original Music Composer
Philip Stockton Supervising Sound Editor, Dialogue Editor
J.C. MacKenzie Realtor
Eugene Gearty Supervising Sound Editor, Sound Effects Editor
John Polce Lynn Detective
Joseph Oliveira Officer (uncredited)
Kristen Dalton Gwen
Johnny Villanueva Hairstylist
Larry Mitchell Younger Priest
Ellen Lewis Casting
Audrie Neenan Woman at Bar #2
Andrew Rowlands Camera Operator
Jill Brown Executed Woman
Graham King Producer
Christine Beveridge Makeup Artist
David Davenport Costume Supervisor
Martha Pinson Script Supervisor
Tim Monich Dialect Coach
William Monahan Screenplay
Thomas Lappin Camera Operator
Nellie Sciutto Queenan's Secretary
Jamie Baker Foley Editor
Janet Paparazzo Stunts