 | Anthony Hopkins als Anthony |
 | Olivia Colman als Anne |
 | Mark Gatiss als The Man |
 | Olivia Williams als The Woman |
 | Imogen Poots als Laura |
 | Rufus Sewell als Paul |
 | Ayesha Dharker als Dr. Sarai |
 | Roman Zeller als Boy |
 | Evie Wray als Lucy (uncredited) |
| Brian Rodger als Hospital Visitor (uncredited) |
| Romulus Stoicescu als Teen (uncredited) |
| Philippe Carcassonne | Producer |
| Jean-Louis Livi | Producer |
| Christophe Spadone | Producer |
| Florian Zeller | Screenplay |
| Simon Friend | Producer |
| Lauren Dark | Executive Producer |
| David Parfitt | Producer |
| Florian Zeller | Theatre Play |
| Ollie Madden | Executive Producer |
| Paul Grindey | Executive Producer |
| Daniel Battsek | Executive Producer |
| Ben Smithard | Director of Photography |
| Peter Francis | Production Design |
| Yorgos Lamprinos | Editor |
| Alice Dawson | Co-Producer |
| Christopher Hampton | Screenplay |
| Nadia Stacey | Makeup Designer |
| Anna Mary Scott Robbins | Costume Designer |
| Hugo Grumbar | Executive Producer |
| Ludovico Einaudi | Original Music Composer |
| Nadia Stacey | Hair Designer |
| Tim Haslam | Executive Producer |
| Florian Zeller | Director |
| Cathy Featherstone | Set Decoration |
| Vincent Verdoux | Sound Re-Recording Mixer |
| Mikaël Tanguy | Visual Effects Supervisor |
| Céline Goriot | Visual Effects Producer |
| Amanda Dazely | Art Direction |
| Astrid Sieben | Supervising Art Director |
| Beth Timbrell | Line Producer |
| Christophe Jeauffroy | Line Producer |
| Cleone Clarke | Associate Producer |
| George Every | First Assistant Director |
| Will Whale | Production Sound Mixer |
| Sandy Notarianni | Sound Editor |
| Guillaume Clément | Music Supervisor |
| Susanna Lenton | Script Supervisor |
| Christine Duchier | Post Production Supervisor |
| Natalie Valentine | Standby Art Director |
| Kate Trevessey | Graphic Designer |
| Tony Sankey | Grip |
| Alfie Sankey-Green | Assistant Grip |
| Dorothee Freytag | Production Coordinator |
| Tahira Herold | Makeup Supervisor |
| Tahira Herold | Hair Supervisor |
| Jo McLaren | Stunt Coordinator |
| Oliver Gough | Stunts |
| Justine Bernal | Post Production Supervisor |
| Audrey Fine | Visual Effects Producer |
| Kevin Day | Props |
| Jamie D. Allen | Second Assistant Director |
| Stewart Allen-Smith | Third Assistant Director |
| Katie Dadswell | Art Department Assistant |
| Ben Smithard | Camera Operator |
| Jamie Phillips | First Assistant Camera |
| Scott Jamison | Second Assistant Camera |
| Alan Robert Hopkins | Digital Imaging Technician |
| Rosamund Freeman | Camera Trainee |
| Emmanuelle Stannard | Assistant Production Coordinator |
| Maxine Stanley | Accountant |
| Anchal Clarke | Assistant Accountant |
| Matt Dalton | Post Production Accountant |
| Adam McCreight | Property Master |
| Josh Robinson Ward | First Assistant Sound Editor |
| Guido Lerner | Assistant Sound Editor |
| Elle Wilson | Assistant Costume Designer |
| Anna Morena | Makeup & Hair |
| Peter-Frank Dewulf | Location Manager |
| Julian Bivol | Assistant Location Manager |
| Toni Nordli | Location Assistant |
| Clémence Le Brun | Assistant Editor |
| Aloyse Launay | Assistant Sound Editor |
| Vincent Verdoux | ADR Mixer |
| Vincent Verdoux | Foley Mixer |
| Florian Fabre | Foley Artist |
| Margot Saada | ADR Supervisor |
| Michael McDermott | Gaffer |
| Vince Madden | Best Boy Electric |
| Andrew Duncan | Best Boy Electric |
| Warren Ewen | Best Boy Electric |
| Charlie Doe | Electrician |
| Matt O'Brien | Electrician |
| Chris Jacques | Electrician |
| Warren Lever | Construction Manager |
| Kirsty Langsdale | Unit Publicist |
| Clea Tammes | Unit Publicist |
| Sean Gleason | Still Photographer |
| Niels Barroin | Digital Intermediate Editor |
| Pierre Beautrait | Digital Intermediate Editor |
| Gareth Spensley | Digital Intermediate Colorist |
| Marie Fernandes | Digital Intermediate Producer |
