| Michael Keaton | Walter 'Robby' Robinson |
| Mark Ruffalo | Michael Rezendes |
| Rachel McAdams | Sacha Pfeiffer |
| Liev Schreiber | Marty Baron |
| Brian d'Arcy James | Matty Carroll |
| Stanley Tucci | Mitchell Garabedian |
| Billy Crudup | Eric MacLeish |
| John Slattery | Ben Bradlee Jr. |
| Elena Wohl | Barbara |
| Gene Amoroso | Steve Kurkjian |
| Doug Murray | Peter Canellos |
| Sharon McFarlane | Helen Donovan |
| Jamey Sheridan | Jim Sullivan |
| Neal Huff | Phil Saviano |
| Robert B. Kennedy | Court Clerk Mark |
| Duane Murray | Hansi Kalkofen |
| Brian Chamberlain | Paul Burke |
| Michael Cyril Creighton | Joe Crowley |
| Paul Guilfoyle | Pete Conley |
| Michael Countryman | Richard Gilman |
| Tim Whalen | Young Cop |
| Martin Roach | Cop in Coffee Shop |
| Brad Borbridge | Sports Editor |
| Don Allison | Bishop |
| Patty Ross | Linda |
| Paloma Nunez | Garabedian's Receptionist |
| Robert Clarke | Judge Volterra |
| Gary Galone | Jack Dunn |
| David Fraser | Jon Albano |
| Paulette Sinclair | Receptionist at Judge's Chambers |
| Laurie Heineman | Judge Sweeney |
| Elena Juatco | Guest List Woman |
| Nancy Villone | Maryetta Dussourd |
| Wendy Merry McCarthy | Female Editor |
| Siobahn Murphy | Intern |
| Eileen Padua | Sacha's Grandmother |
| Darrin Baker | Middle Age Priest at St. Peter's |
| Brett Cramp | Middle Aged Man |
| Joe Stapleton | Older Cop |
| Maureen Keiller | Eileen McNamara |
| James LeBlanc | Patrick McSorley |
| Tim Progosh | Principal Bill Kemeza |
| Neion George | Waiter at Gala |
| Laurie Murdoch | Wilson Rogers |
| Zarrin Darnell-Martin | Intern Wanda |
| Krista Morin | Young Reporter |
| Paula Barrett | Jim's Wife |
| Mairtin O'Carrigan | Stewart |
| Rob Deleeuw | Herald Reporter Quimby |
| Nancy Carroll | Jane Paquin |
| Anthony Paolucci | Kevin |
| Michele Proude | Lisa Tuite |
| Richard O'Rourke | Ronald Paquin |
| Len Cariou | Cardinal Law |
| Dennis M. Lynch | Clerk O'Brian |
| Stefanie Drummond | Sheila |
| Mark McGrinder | Weeping Man |
| Richard Fitzpatrick | Rectory Priest |
| Tom Driscoll | Disgruntled Man |
| Jeffrey Samai | Library Security |
| Moira Driscoll | Woman Interviewee |
| Forrest Weber | Angry Man |
| Doreen Spencer | Older Southie Woman |
| Janet Pinnick | Receptionist |
| Shannon McDonough | Receptionist |
| Shannon Ruth | Girl at Garabedian's |
| Daniel Ruth | Boy at Garabedian's |
| Timothy Mooney | Bad Priest |
| Bruce Serafin | Boston Globe Security Guard |
| Donna Jahier | Angry Man's Sister |
| Edward Brickley | Red Sox Announcer |
Technical Credits
| Tom McCarthy | Director,Screenwriter |
| Kerry Barden | Casting |
| Michael Bederman | Executive Producer |
| Mario Cacioppo | Makeup |
| Stephen A. Carter | Production Designer |
| William Cheng | Set Decoration/Design |
| Michaela Cheyne | Art Director |
| Wendy Chuck | Costumes/Costume Designer |
| Kate Churchill | Co-producer |
| Karola Dirnberger | Makeup |
| Bard Dorros | Executive Producer |
| Blye Faust | Producer |
| John Garrett | Sound Mixer |
| John Garrett | Sound Mixer |
| Walter Gasparovic | Asst. Director |
| Glen Gauthier | Sound/Sound Designer |
| Steve Golin | Producer |
| Jonathan King | Executive Producer |
| Jason Knight | Casting |
| Peter Lawson | Executive Producer |
| John MacNeil | Set Decoration/Design |
| Xavier Marchand | Executive Producer |
| Tom McArdle | Editor |
| David Mizner | Associate Producer |
| Christo Morse | Asst. Director |
| Pierre Omidyar | Executive Producer |
| Tom Ortenberg | Executive Producer |
| Carolyn Pickman | Casting |
| Mary Ramos | Musical Direction/Supervision |
| Nicole Rocklin | Producer |
| Jordan Samuel | Makeup |
| Paul Schnee | Casting |
| Howard Shore | Score Composer |
| Josh Singer | Executive Producer,Screenwriter |
| Jeff Skoll | Executive Producer |
| Michael Sugar | Producer |
| Masanobu Takayanagi | Cinematographer |
| Youtchi vonLintel | Co-producer |
| Teresa Young | Makeup |
