Leonardo DiCaprio
Billy
Matt Damon
Colin
Jack Nicholson
Costello
Mark Wahlberg
Dignam
Martin Sheen
Queenan
Ray Winstone
Mr. French
Vera Farmiga
Madolyn
Anthony Anderson
Brown
Alec Baldwin
Ellerby
Kevin Corrigan
Cousin Sean
James Badge Dale
Barrigan
David O'Hara
Fitzy
Mark Rolston
Delahunt
Robert Wahlberg
Lazio (FBI)
Kristen Dalton
Gwen
J.C. MacKenzie
Realtor
Peg Holzemer
Mrs. Kennefick
Gurdeep Singh
Pakistani Proprietor
Armen Garo
Providence Gangster #1
John Cenatiempo
Providence Gangster #2
Joseph Riccobene
Kneecapped Bankrobber
Billy Smith
Detective #1 Tailing Queenan
Lyman Chen
Translator
Kevin P. McCarthy
Detective #1 - Colin's Unit
Chris Fischer
Detective #2 - Colin's Unit
Brian Smyj
Man Glassed in Bar
Larry Mitchell
Younger Priest
Anthony Estrella
Police Camera Tech
Tracey Paleo
Darlene the Secretary
Dorothy Lyman
Woman at Bar #1
Audrie Neenan
Woman at Bar #2
Conor Donovan
Young Colin
Patrick Coppola
Bookie Harassed by French
Mick O'Rourke
Jimmy Bags
Nellie Sciutto
Queenan's Secretary
Henry Yuk
Chinese Government Man
Dennis Lynch
Costello's Crew #1
Michael Byron
Costello's Crew #2
John Rue
Luncheonette Proprietor
Joseph P. Reidy
Priest w/ Young Colin
Brian Haley
Detective #2 Tailing Queenan
Terry Serpico
Detective #3 Tailing Queenan
Jay Giannone
Detective #4 Tailing Queenan
John Polce
Lynn Detective
Jill Brown
Executed Woman
Sarah Fearon
French's Wife
Denece Ryland
Woman Doctor
Johnny Cicco
Crack Addict
Chance Kelly
Exam Instructor
Shay Duffin
Bartender at Brasserie
Francesca Scorsese
Little Girl at Airport
Emma Tillinger Koskoff
Woman with Dog
Craig 'Radio Man' Castaldo
Crack House Denizen
Eric Bruno Borgman
Reporter (uncredited)
Brendan Burke
Irish Thug (uncredited)
Jeffrey Corazzini
Crime Scene Unit (uncredited)
Jim Ford
Cadet (uncredited)
Lawrence Cameron Steele
Academy Firearms Instructor (uncredited)
John Franchi
Pedestrian (uncredited)
Kim Carrell
MA State Police Detective
Rebecca Love
Adult Film Actress (uncredited)
