| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Alan Almond | Crew | Camera | Director of Photography | 1 |
 Andrew Davies | Crew | Writing | Screenplay | 2 |
Astrid Sieben | Crew | Art | Art Direction | 1 |
Brendan Condren | Crew | Crew | Stunts | 1 |
Cait Collins | Crew | Production | Line Producer | 3 |
Conor McPherson | Crew | Writing | Screenplay | 1 |
 Diarmuid Lawrence | Crew | Directing | Director | 1 |
Donal O'Farrell | Crew | Crew | Stunt Coordinator | 1 |
 Ed Guiney | Crew | Production | Executive Producer | 1 |
Jessica Pope | Crew | Production | Executive Producer | 1 |
John McColgan | Crew | Production | Executive Producer | 1 |
 Kate Harwood | Crew | Production | Executive Producer | 3 |
Lorna Marie Mugan | Crew | Costume & Make-Up | Costume Design | 3 |
Rob Lane | Crew | Sound | Original Music Composer, Music | 3 |
Roy Sharman | Crew | Editing | Editor | 1 |
Ruairi O'Brien | Crew | Crew | Cinematography | 1 |
Susie Cullen | Crew | Art | Production Design | 3 |
Tony Miller | Crew | Camera | Director of Photography | 1 |
Úna Ní Dhonghaíle | Crew | Editing | Editor | 1 |
Conor Dennison | Crew | Art | Standby Art Director, Art Direction | 2 |
 Jim O'Hanlon | Crew | Directing | Director | 1 |
Lisa Osborne | Crew | Production | Producer | 3 |
Louise Kiely | Crew | Production | Casting | 3 |
 Paul Kennington | Crew | Crew | Stunt Double | 1 |
Giedrius Nagys | Crew | Crew | Stunt Coordinator | 2 |
John Alexander | Crew | Directing | Director | 1 |
Philippe Zone | Crew | Crew | Stunts | 1 |
 Sian Milne | Crew | Crew | Stunt Double | 1 |
 Marc Redmond | Crew | Crew | Stunts | 1 |
Gary Robinson | Crew | Crew | Stunts | 1 |
Aoife Byrne | Crew | Crew | Stunt Double | 1 |
Benjamin Black | Crew | Writing | Novel | 3 |
David Head | Crew | Editing | Editor | 1 |
Joan Egan Foglia | Crew | Production | Executive Producer | 1 |
 Aine Ni Mhuiri | Cast | Actress | Maggie | 1 |
 Barbara Adair | Cast | Mrs. Leetch | 1 | |
 Branwell Donaghey | Cast | Actor | Billy Hunt | 1 |
 Brid Brennan | Cast | Actress | Dolly Moran | 1 |
 David Murray | Cast | Actor | John Millican | 1 |
 Dearbhla Molloy | Cast | Actress | Celia Latimer | 1 |
 Deirdre Donnelly | Cast | Actress | Sister Dominic | 1 |
 Denis Conway | Cast | Actor | Father Anselm | 1 |
 Donald Sumpter | Cast | Actor | Josh Crawford | 1 |
 Donna Dent | Cast | Actress | Mrs. Cuffe-Wilkes | 1 |
 Flora Montgomery | Cast | Actress | Isabel Galloway | 1 |
 Frank O'Sullivan | Cast | Davy | 2 | |
 Gabriel Byrne | Cast | Actor | Quirke | 3 |
 Geraldine Somerville | Cast | Actress | Sarah Griffin | 2 |
 Ian McElhinney | Cast | Actor | Bill Latimer | 1 |
 Lalor Roddy | Cast | Actor | Old Man | 1 |
 Lee Ingleby | Cast | Actor | Leslie White | 1 |
 Lesa Thurman | Cast | Actress | Sister Stephanus | 1 |
 Michael Gambon | Cast | Actor | Judge Garret Griffin | 3 |
 Nick Dunning | Cast | Actor | Malachy Griffin | 3 |
 Pat Laffan | Cast | Actor | Costigan | 1 |
 Peter Coonan | Cast | Actor | Brendan Boyle | 1 |
 Sara Stewart | Cast | Actress | Rose Crawford | 2 |
 Shane Taylor | Cast | Actor | Andy Stafford | 1 |
 Stanley Townsend | Cast | Actor | Inspector Hackett | 3 |
 Aaron Neil | Cast | Actor | Hakim Kreutz | 1 |
 Aidan McArdle | Cast | Actor | Oscar Latimer | 1 |
 Aoibhinn McGinnity | Cast | Actress | Delia | 1 |
 Chris Newman | Cast | Actor | Rugby Fan | 1 |
 Garrett Lombard | Cast | Actor | Father Harkins | 1 |
Anne Gill | Cast | Deirdre | 1 | |
 Brian Gleeson | Cast | Actor | Sinclair | 3 |
 Catherine Steadman | Cast | Actress | Claire Stafford | 1 |
 Colin Morgan | Cast | Actor | Jimmy Minor | 1 |
 Diarmaid Murtagh | Cast | Actor | McCoy | 1 |
 Jane McGrath | Cast | Actress | Maisie | 1 |
 Obi Abili | Cast | Actor | Patrick Ojukwu | 1 |
 Andy Kellegher | Cast | Actor | Costigan's Man 2 | 1 |
 Charlie Murphy | Cast | Actress | Deirdre Hunt | 1 |
 Aisling Franciosi | Cast | Actress | Phoebe Griffin | 3 |
 Janet Moran | Cast | Brenda Rutledge | 1 | |
Bernadette McKenna | Cast | Margaret | 1 | |
 Donagh Deeney | Cast | Barman | 1 | |
Gary Egan | Cast | Costigan's Man 1 | 1 | |
 Sam McGovern | Cast | Actor | Young Garda | 1 |
 Noni Stapleton | Cast | Actress | Ward Sister | 1 |
Tim Dillard | Cast | Trucker | 1 | |
Paul McGlinchey | Cast | Customs Officer | 1 | |
| Person | Type | Job | Role(s) | Episodes |
