Ben Affleck as Doug MacRay

Jeremy Renner as James "Jem" Coughlin

Rebecca Hall as Claire Keesey

Jon Hamm as FBI S.A. Adam Frawley

Blake Lively as Krista Coughlin

George Carroll as Albert "Gloansy" Magloan

Pete Postlethwaite as Fergus "Fergie" Colm

Owen Burke as Desmond "Dez" Elden

Titus Welliver as Dino Ciampa

Chris Cooper as Stephen MacRay

Dennis McLaughlin as Rusty

Corena Chase as Agent Quinlan

Brian Scannell as Henry

Kerri Dunbar as Henry’s Girl

Tony V. as Vericom Crew Chief

Isaac Bordoy as Alex Colazzo

Michael Yebba as Beacon G.I. Joe Driver

Daniel Woods as BPD Sergeant at Krista's Accident

Jimmy Joe Maher as Inside Man at Fenway

Joe Lawler as Task Force Agent Conlan

Michele Cressinger as Margie

Mark Berglund as Young Security Guard

Ralph Boutwell as Cashcom Guard

Michael Romig as Cashcom Guard

Michael Malvesti as Atlantic Truck Courier

Jack Neary as Arnold Washton

Ed O'Keefe as Morton Previt

Ben Hanson as FBI SWAT Team Leader

Brian A. White as FBI SWAT #1

Richard Caines as FBI SWAT #2

Frank Garvin as Police Captain

Danny Ring as Cop Giving Statement

Gary Galone as Internal Affairs Officer at Fenway

David Catanzaro as Fenway Detective

Jeremiah Kissel as Claire's Lawyer

Malik McMullen as Plain Clothed FBI Agent

Charles C. Winchester III as Gate D Police Officer

Adam J. Husband as Gate D Police Officer

Danny DeMiller as Eskimo Story Speaker

Susan Rawlinson as NA Speaker

Sean Locke as NA Speaker

Peter Looney as NA Speaker

Lennin Pena as Colazzo's Friend

James McKittrick as Cop Who Looks Away

Ted Arcidi as Cedar Junction C.O.

Bryan Connolly as Cedar Junction C.O. Visitors Area

Quan Liang Chen as Monument Laundry Owner

Alex Winston as Police Photographer

Michael F. Murphy as Michael Houlihan

Kimberly Mahoney as Warren Tavern Waitress

Bobby Curcuro as Man in Harvard Square

Ginaya Green as Krista's Friend

Nicole Page as Krista's Friend

Georgia Lyman as Neptune's Waitress

Robert Boyden as Vericom Employee

Jamie Ghazarian as Dancer at Foxy Lady

Chick Bernhard as Marty McGuire (uncredited)

Stephen Bishop as Derrick (uncredited)

David Boston as Man at Casino Cash in Window Line (uncredited)

Alex Bussell as Pedestrian (uncredited)

Katelyn Cahill as Student / Pedestrian (uncredited)

Nick Cairis as FBI Agent (uncredited)

Jeffrey Corazzini as Boston Police Officer (uncredited)

Tommy Dallace as FBI Special Agent Danny Hawkins (uncredited)

Mary A. DeBriae as Poker Player (uncredited)

Tom Diorio as Boston Police Officer (uncredited)

Jeffrey Feingold as FBI Agent (uncredited)

Mugisha Feruzi as Pedestrian (uncredited)

Carlos Foglia as FBI Agent Gary Clark (uncredited)

Jim Ford as FBI SWAT (uncredited)

Rich Foster as Decoy Lot Agent (uncredited)

John Franchi as Townie (uncredited)

Jonathon Frost as FBI Agent (uncredited)

Victor Garber as Assistant Bank Manager (uncredited)

Suzanne Gillies as FBI Agent (uncredited)

London Hall as Runner (uncredited)

Bane Harlock as Man (uncredited)

Louis Holmes as Gambler (uncredited)