Trailer
Images
 | Leonardo DiCaprio as William "Billy" Costigan, Jr. |
 | Matt Damon as Staff Sgt. Colin Sullivan |
 | Jack Nicholson as Francis "Frank" Costello |
 | Mark Wahlberg as Staff Sgt. Sean Dignam |
 | Martin Sheen as Capt. Oliver Charles Queenan |
 | Ray Winstone as Arnold "Frenchy" French |
 | Vera Farmiga as Dr. Madolyn Madden |
 | Anthony Anderson as Trooper Brown |
 | Alec Baldwin as Capt. George Ellerby |
 | Kevin Corrigan as Cousin Sean |
 | James Badge Dale as Barrigan |
 | David O'Hara as Fitzy |
 | Robert Wahlberg as Lazio |
 | Kristen Dalton as Gwen |
 | Thomas B. Duffy as Govenor |
 | Richard Hughes as Uncle Edward |
 | Chance Kelly as Exam Instructor |
 | Larry Mitchell as Younger Priest |
 | Mark Rolston as Delahunt |
 | J.C. MacKenzie as Realtor |
 | Mary Klug as Billy's Aunt |
 | Robert 'Toshi' Kar Yuen Chan as Triad Boss |
 | Gurdeep Singh as Pakistani Proprietor |
 | Armen Garo as Providence Gangster #1 |
 | John Cenatiempo as Providence Gangster #2 |
 | Billy Smith as Detective #1 Tailing Queenan |
 | Brian Smyj as Man Glassed in Bar |
| William Severs as Older Priest |
| Douglas Crosby as Man Killed by French |
 | Dorothy Lyman as Woman at Bar #1 |
 | Audrie Neenan as Woman at Bar #2 |
 | Conor Donovan as Young Colin |
 | Patrick Coppola as Bookie Harassed by French |
 | Mick O'Rourke as Jimmy Bags |
 | Nellie Sciutto as Queenan's Secretary |
 | Henry Yuk as Chinese Government Man |
 | John Rue as Luncheonette Proprietor |
 | Joseph P. Reidy as Priest with Young Colin |
| John Farrer as Priest at Billy's Funeral |
 | Brian Haley as Detective #2 Tailing Queenan |
 | Terry Serpico as Detective #3 Tailing Queenan |
 | Jay Giannone as Detective #4 Tailing Queenan |
 | David Conley as Gang Member with Mr. French |
| Jill Brown as Executed Woman |
 | Tom Kemp as Billy Costigan, Sr. (credit only) |
| Joseph Riccobene as Kneecapped Bankrobber |
 | Johnny Cicco as Crack Addict |
| Shay Duffin as Bartender at Brasserie |
| David Fischer as Executed Man |
| Emma Tillinger Koskoff as Woman with Dog |
 | Craig Castaldo as Crack House Denizen |
| James P. Anderson as Boston Police Dignitary (uncredited) |
| Takumi Bando as Triad (uncredited) |
| Eric Bruno Borgman as Reporter (uncredited) |
| David Boston as Boston Police Chief (uncredited) |
| Brendan Burke as Irish Thug (uncredited) |
| Chris Chinn as Gang Member (uncredited) |
| Jeffrey Corazzini as Crime Scene Unit (uncredited) |
 | Jim Ford as Cadet (uncredited) |
 | Trudi Goodman as Woman Office Worker (uncredited) |
| Steve Lord as Academy Pistol Coach (uncredited) |
| Jack McCullough as EMT (uncredited) |
 | Osmani Rodriguez as Reporter (uncredited) |
| Lawrence Cameron Steele as Academy Firearms Instructor (uncredited) |
 | Stream as Shopper in China Town (uncredited) |
| Conor Timmis as Rugby Fan (uncredited) |
 | Joseph Oliveira as Officer (uncredited) |
| Mark Falvo as Reporter (uncredited) |
| Adam Masnyk as Southie Teen / Soccer Player (uncredited) |
| Shawn Fogarty as Pedestrian / Businessman (uncredited) |
 | John Franchi as Pedestrian (uncredited) |
| Paul McGillicuddy as Subway Passenger (uncredited) |
| Directing | |
| Martin Scorsese | Director |
Sound | |
| Howard Shore | Music |
Camera | |
| Michael Ballhaus | Director of Photography |
Editing | |
| Thelma Schoonmaker | Editor |
Production | |
| Ellen Lewis | Casting |
Writing | |
| William Monahan | Screenplay |
| Alan Mak | Screenplay |
| Felix Chong | Screenplay |
Production | |
| Brad Grey | Producer |
| Brad Pitt | Producer |
| Graham King | Producer |
Costume & Make-Up | |
| Sandy Powell | Costume Design |
Art | |
| Kristi Zea | Production Design |
| Teresa Carriker-Thayer | Art Direction |
| Leslie E. Rollins | Set Decoration |
Costume & Make-Up | |
| Kathryn Blondell | Hairstylist |
| Kay Georgiou | Hairstylist |
| Johnny Villanueva | Hairstylist |
| Joy Zapata | Hairstylist |
| Michael Germain | Makeup Artist |
| Sian Grigg | Makeup Artist |
| Christine Beveridge | Makeup Artist |
| Donald Mowat | Makeup Artist |
| John Caglione Jr. | Makeup Artist |
Art | |
| Erik Knight | Art Department Coordinator |
| Marion Kolsby | Assistant Art Director |
Crew | |
| Robert Griffon Jr. | Property Master |
Art | |
| Robert Thayer | Assistant Art Director |
| Joseph Alfieri | Construction Coordinator |
| Theodore Suchecki | Construction Coordinator |
Sound | |
| Jeffrey Stern | ADR & Dubbing |
Editing | |
| Jac Rubenstein | Dialogue Editor |
| Philip Stockton | Dialogue Editor |
Sound | |
| Philip Stockton | Supervising Sound Editor |
| Eugene Gearty | Supervising Sound Editor |
| Eugene Gearty | Sound Effects Editor |
| Allan Zaleski | Sound Effects Editor |
| Tom Fleischman | Sound Re-Recording Mixer |
| Marissa Littlefield | ADR & Dubbing |
| Marko A. Costanzo | Foley |
Crew | |
| Steven Kirshoff | Special Effects Coordinator |
Visual Effects | |
| Ron Ames | Visual Effects Producer |
| Robert Legato | Visual Effects Supervisor |
Crew | |
| G.A. Aguilar | Stunt Coordinator |
Camera | |
| Thomas Lappin | Camera Operator |
| Bruce MacCallum | Camera Operator |
| Andrew Rowlands | Camera Operator |
| Andrew Cooper | Still Photographer |
Costume & Make-Up | |
| David Davenport | Costume Supervisor |
| Thomas Stokes | Costume Supervisor |
Editing | |
| Devin Sterling | Digital Intermediate |
Sound | |
| Tass Filipos | Music Editor |
| Jennifer Dunnington | Music Editor |
Crew | |
| Robert Martini | Transportation Coordinator |
Directing | |
| Martha Pinson | Script Supervisor |
Crew | |
| Tim Monich | Dialect Coach |
Production | |
| Carla Raij | Location Manager |
Crew | |
| Larry Kaplan | Unit Publicist |
Directing | |
| Joseph P. Reidy | Assistant Director |
Visual Effects | |
| David Ebner | Visual Effects Supervisor |
Art | |
| Susan Perlman | Set Decoration |
Production | |
| G. Mac Brown | Executive Producer |
| Doug Davison | Executive Producer |
| Roy Lee | Executive Producer |
Crew | |
| Brian Ricci | Special Effects |
| Eric Weinstein | Actor's Assistant |
Lighting | |
| Timothy Healy | Electrician |
Crew | |
| Paul A. Levin | Post Production Supervisor |
Sound | |
| Jamie Baker | Foley |
Crew | |
| Michael Arthur | Stunts |
| William 'Billy Jack' Jakielaszek | Special Effects |
| Lisa Shaftel | Scenic Artist |
