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
![Thomas B. Duffy]()
Thomas B. Duffy
Govenor
![Richard Hughes]()
Richard Hughes
Uncle Edward
J.C. MacKenzie
Realtor
![Mary Klug]()
Mary Klug
Billy's Aunt
Peg Holzemer
Mrs. Kennefick
![Robert 'Toshi' Kar Yuen Chan]()
Robert 'Toshi' Kar Yuen Chan
Triad Boss
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
![William Severs]()
William Severs
Older Priest
Larry Mitchell
Younger Priest
Anthony Estrella
Police Camera Tech
![Andrew Breving]()
Andrew Breving
Police Cell Phone Tech
Tracey Paleo
Darlene the Secretary
![Douglas Crosby]()
Douglas Crosby
Man Killed by French
Dorothy Lyman
Woman at Bar #1
Audrie Neenan
Woman at Bar #2
![Frank Mallicoat]()
Frank Mallicoat
News Anchor
![Paula DeMers]()
Paula DeMers
Billy's Mother
Conor Donovan
Young Colin
![Amanda Lynch]()
Amanda Lynch
Carmen
![Sallie Toussaint]()
Sallie Toussaint
Woman at Opera
Patrick Coppola
Bookie Harassed by French
Mick O'Rourke
Jimmy Bags
![Deborah Carlson]()
Deborah Carlson
Sister Mary Theresa
Nellie Sciutto
Queenan's Secretary
![Peter Welch]()
Peter Welch
Other Prisoner
Henry Yuk
Chinese Government Man
Dennis Lynch
Costello's Crew #1
Michael Byron
Costello's Crew #2
![William Lee]()
William Lee
Costello's Crew #3
John Rue
Luncheonette Proprietor
![Peter Crafts]()
Peter Crafts
Man in Costello's Bar
![Joseph P. Reidy]()
Joseph P. Reidy
Priest w/ Young Colin
John Farrer
Priest at Billy's Funeral
![Paris Karounos]()
Paris Karounos
Jimmy Pappas
Brian Haley
Detective #2 Tailing Queenan
Terry Serpico
Detective #3 Tailing Queenan
Jay Giannone
Detective #4 Tailing Queenan
John Polce
Lynn Detective
![Bo Cleary]()
Bo Cleary
Drill Instructor #2 (voice)
![David Conley]()
David Conley
Gang Member with Mr. French
![Victor Chan]()
Victor Chan
Chinese Delivery Man
Jill Brown
Executed Woman
Sarah Fearon
French's Wife
Denece Ryland
Woman Doctor
![Daniel F. Risteen, Jr.]()
Daniel F. Risteen, Jr.
Crack House Cop #1
![Francis P. Hughes]()
Francis P. Hughes
Crack House Cop #2
Johnny Cicco
Crack Addict
Chance Kelly
Exam Instructor
Shay Duffin
Bartender at Brasserie
![John McConnell]()
John McConnell
Bookie in Costello's Bar
![Kenneth Stoddard]()
Kenneth Stoddard
State Trooper #1
![Jeffrey Winter]()
Jeffrey Winter
State Trooper #2
![Paddy Curran]()
Paddy Curran
New Guy
![Mark Philip Patrick]()
Mark Philip Patrick
New Guy
![David Fischer]()
David Fischer
Executed Man
![Walter Y.F. Wong]()
Walter Y.F. Wong
Waiter in Alley
![Tony M. Yee]()
Tony M. Yee
Waiter in Alley
Francesca Scorsese
Little Girl at Airport
![Alex Morris]()
Alex Morris
Young Man at Airport
Emma Tillinger Koskoff
Woman with Dog
Craig 'Radio Man' Castaldo
Crack House Denizen
![Takumi Bando]()
Takumi Bando
Triad (uncredited)
Eric Bruno Borgman
Reporter (uncredited)
Brendan Burke
Irish Thug (uncredited)
![Chris Chinn]()
Chris Chinn
Gang Member (uncredited)
Jeffrey Corazzini
Crime Scene Unit (uncredited)
Jim Ford
Cadet (uncredited)
Trudi Goodman
Woman Office Worker (uncredited)
![Steve Lord]()
Steve Lord
Academy Pistol Coach (uncredited)
![Jack McCullough]()
Jack McCullough
EMT (uncredited)
![Osmani Rodriguez]()
Osmani Rodriguez
Reporter (uncredited)
Lawrence Cameron Steele
Academy Firearms Instructor (uncredited)
![Conor Timmis]()
Conor Timmis
Rugby Fan (uncredited)
![Joseph Oliveira]()
Joseph Oliveira
Officer (uncredited)
![Adam Masnyk]()
Adam Masnyk
Southie Teen / Soccer Player (uncredited)
John Franchi
Pedestrian (uncredited)
![Paul McGillicuddy]()
Paul McGillicuddy
Subway Passenger (uncredited)
![Kim Carrell]()
Kim Carrell
MA State Police Detective
Rebecca Love
Adult Film Actress (uncredited)
