| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Alexa L. Fogel | Crew | Production | Casting | 13 |
 Bobby Moresco | Crew | Production | Executive Producer, Creator | 13 |
 Denise Pleune | Crew | Production | Associate Producer | 13 |
 James Bigwood | Crew | Production | Producer | 13 |
 Jeff King | Crew | Production | Supervising Producer | 13 |
Kim Clements | Crew | Production | Co-Producer | 13 |
 Mark Isham | Crew | Sound | Music | 13 |
Mark R. Harris | Crew | Production | Co-Executive Producer | 13 |
 Paul Haggis | Crew | Production | Executive Producer, Creator, Director, Writer, Story | 13 |
Rafael Alvarez | Crew | Production | Producer | 13 |
Rick Butler | Crew | Art | Production Design | 13 |
Sean Whitesell | Crew | Production | Co-Executive Producer, Teleplay | 13 |
Dana Maksimovich | Crew | Production | Co-Producer | 13 |
 Allan Steele | Cast | Actor | Detective Calero | 1 |
 Anthony Grasso | Cast | Actor | Building Department Clerk | 1 |
 Brian Tarantina | Cast | Actor | Vinnie Culiari | 13 |
 Chance Kelly | Cast | Actor | Paddy | 1 |
 Chris Bauer | Cast | Actor | Huey Farrell | 1 |
Frank Page | Cast | Actor | Richie | 1 |
 Geoffrey Wigdor | Cast | Actor | Tommy 'Teach' Corcoran | 1 |
 James Badge Dale | Cast | Actor | Samson | 1 |
 Jonathan Tucker | Cast | Actor | Tommy Donnelly | 13 |
 Kate Mulgrew | Cast | Actress | Helen Donnelly | 1 |
 Keith Nobbs | Cast | Actor | Joey 'Ice Cream' | 13 |
 Ken Garito | Cast | Actor | Anthony Lino | 1 |
 Kevin Conway | Cast | Actor | Jenny's Pop | 3 |
 Kirk Acevedo | Cast | Actor | Nicky Cottero | 13 |
 Mark Margolis | Cast | Actor | Sal Minetta | 1 |
 Michael Rispoli | Cast | Actor | Alo | 1 |
 Ned Eisenberg | Cast | Actor | Frankie Stein | 4 |
 Paul Calderon | Cast | Actor | Detective at Prison | 1 |
 Peter Greene | Cast | Actor | Derek 'Dokey' Farrell | 13 |
 Sherri Parker Lee | Cast | Lisa Tyler | 1 | |
 Sonny Marinelli | Cast | Actor | Detective Sunny | 1 |
 Tom Guiry | Cast | Actor | Jimmy Donnelly | 13 |
 Betsy Beutler | Cast | Actress | Joanie | 3 |
 Billy Lush | Cast | Actor | Kevin Donnelly | 13 |
 Daniel Manche | Cast | Actor | Kid | 1 |
 Dylan Hartigan | Cast | Actor | Young Joey | 1 |
Greg D'Agostino | Cast | Italian Soldier #3 (uncredited) | 1 | |
 Harris Doran | Cast | Actor | Book Store Clerk | 1 |
 Jason Furlani | Cast | Actor | George | 1 |
Kenny Marino | Cast | Actor | McGee | 1 |
 Kevin Cannon | Cast | Actor | Westie | 1 |
 Lauren Bittner | Cast | Actress | Mary Ann Maxwell (uncredited) | 1 |
 Michael Stahl-David | Cast | Actor | Sean Donnelly | 13 |
 Olivia Wilde | Cast | Actress | Jenny Reilly | 13 |
 Patrick Brennan | Cast | Actor | Earl | 13 |
 Seamus Davey-Fitzpatrick | Cast | Actor | (uncredited) | 1 |
 Tom Verri | Cast | Thug | 1 | |
 Elizabeth Gillies | Cast | Actress | Young Jenny | 3 |
 Bonnie Discepolo | Cast | Actress | Nosy Neighbor | 1 |
 Maria Di Angelis | Cast | Actress | Interrogation Cop | 1 |
Dominick Mancino | Cast | Mobster (uncredited) | 1 | |
Erika Michels | Cast | Prison Nurse | 1 | |
Michael Phelan | Cast | Actor | Pallbearer #2 | 1 |
Adelia Saunders | Cast | Actress | Kim | 2 |
Jamie Bonelli | Cast | Nadine | 3 | |
| Person | Type | Job | Role(s) | Episodes |
