 | Benedict Cumberbatch | .... | Alan Turing |
| Keira Knightley | .... | Joan Clarke |
| Matthew Goode | .... | Hugh Alexander |
| Rory Kinnear | .... | Detective Robert Nock |
| Allen Leech | .... | John Cairncross |
| Matthew Beard | .... | Peter Hilton |
| Charles Dance | .... | Commander Denniston |
| Mark Strong | .... | Stewart Menzies |
| James Northcote | .... | Jack Good |
| Tom Goodman Hill | .... | Sergeant Staehl |
| Steven Waddington | .... | Superintendent Smith |
| Ilan Goodman | .... | Keith Furman |
| Jack Tarlton | .... | Charles Richards |
| Alex Lawther | .... | Young Alan Turing |
| Jack Bannon | .... | Christopher Morcom |
| Tuppence Middleton | .... | Helen |
| Dominic Charman | .... | Sherborne Student 1 |
| James G Nunn | .... | Sherborne Student 2 |
| Charlie Manton | .... | Sherborne Student 3 |
| David Charkham | .... | Joan's Father |
| Victoria Wicks | .... | Joan's Mother |
| Andrew Havill | .... | Teacher |
| Laurence Kennedy | .... | Headmaster |
| Tim Van Eyken | .... | MI6 Agent |
| Will Bowden | .... | Military Policeman |
| Miranda Bell | .... | Margaret |
| Tim Steed | .... | Electrical Assistant |
| Lee Asquith-Coe | .... | MI6 Agent (uncredited) |
| Hayley Joanne Bacon | .... | Woman in Crowd (uncredited) |
| Lauren Beacham | .... | RAF Wren (uncredited) |
| Ingrid Benussi | .... | Dancer (uncredited) |
| Nicholas Blatt | .... | Ministry Man (uncredited) |
| Carmen Coupeau Borras | .... | Detective Robert Nock's Secretary (uncredited) |
| Jack Brash | .... | Evacuee (uncredited) |
| Ancuta Breaban | .... | Wren (uncredited) |
| Heather Broderick | .... | Passerby (uncredited) |
| Peter Brown | .... | Navy Captain (uncredited) |
| Alex Corbet Burcher | .... | Dancer (uncredited) |
| Grace Calder | .... | Assistant Wren (uncredited) |
| Richard Campbell | .... | Crossword Man in Pub (uncredited) |
| Daniel Chapple | .... | MI6 Agent (uncredited) |
| Winston Churchill | .... | Himself(archive footage) (uncredited) |
| Lisa Colquhoun | .... | Joan Clarke's Friend (uncredited) |
| Alexander Cooper | .... | Bletchley Park Agent (uncredited) |
| Chris Cowlin | .... | Military Police Officer (uncredited) |
| Kirsty-Marie Day | .... | WRAF Officer (uncredited) |
| Leigh Dent | .... | Passerby (uncredited) |
| Esther Eden | .... | WW2 Wren (uncredited) |
| Sam Exley | .... | Military Policeman 3 (uncredited) |
| Ben Farrow | .... | Military Police (uncredited) |
| Mike Firth | .... | Crossword Enthusiast (uncredited) |
| Hannah Flynn | .... | Wren (uncredited) |
| Guna Gultniece | .... | Passerby (uncredited) |
| Adolf Hitler | .... | Himself(archive footage) (uncredited) |
| Leigh Holland | .... | M16 Agent (uncredited) |
| Luke Hope | .... | MI6 Exam Agent (uncredited) |
| Vera Horton | .... | Nunn (uncredited) |
| Ashley Hudson | .... | British soldier (uncredited) |
| Michael John-Lewis | .... | Lieutenant (uncredited) |
| Denis Khoroshko | .... | Civilian (uncredited) |
| Debra Leigh-Taylor | .... | Evacuee (uncredited) |
| Stuart Matthews | .... | Bletchley Park Operative (uncredited) |
| Amber-Rose May | .... | Joan Clarke's Friend (uncredited) |
| Arnold Montey | .... | M16 Agent (uncredited) |
| Samantha Moran | .... | Wren (uncredited) |
| Gina Morrish | .... | Evacuee (uncredited) |
| Adam Nowell | .... | Technician (uncredited) |
| Joseph Oliveira | .... | M16 Agent (uncredited) |
| Ryan Parker | .... | Young Guy on the Street (uncredited) |
| John Redman | .... | Young Officer (uncredited) |
| Julio Romeo | .... | Police officer (uncredited) |
| Adam Scown | .... | Crossword Soldier (uncredited) |
| Scott Stevenson | .... | Bletchley (uncredited) |
| Harry S. Truman | .... | Himself(archive footage) (uncredited) |
| Emilia Ufir | .... | Secretary (uncredited) |
| Mark Underwood | .... | Crossword Man (uncredited) |
| Nicola-Jayne Wells | .... | First Aid Nurse (uncredited) |
| Josh Wichard | .... | German Spy Plane Pilot (uncredited) |
The Imitation Game
United Kingdom, 
United States
Overview
German
DTS HD Master Audio 5.1
English
Commentary
DTS 2-Channel Stereo
Crew