 | Kenneth Branagh als Hercule Poirot |
 | Kyle Allen als Maxime Gerard |
 | Camille Cottin als Olga Seminoff |
 | Jamie Dornan als Dr Leslie Ferrier |
 | Tina Fey als Ariadne Oliver |
 | Jude Hill als Leopold Ferrier |
 | Ali Khan als Nicholas Holland |
 | Emma Laird als Desdemona Holland |
 | Kelly Reilly als Rowena Drake |
 | Riccardo Scamarcio als Vitale Portfoglio |
 | Michelle Yeoh als Joyce Reynolds |
 | Dylan Corbett-Bader als Baker |
 | Amir El-Masry als Alessandro Longo |
| Fernando Piloni als Vincenzo Di Stefano |
 | Lorenzo Acquaviva als Grocer |
 | David Menkin als Puppet Show MC |
| Yaw Nimako-Asameah als Child (Cookie Gobbler) |
| Clara Duczmal als Child (Crying Girl) |
 | Rowan Robinson als Alicia Drake |
| Stella Harris als Child (Staircase 1) |
| Emilio Villa-Muhammad als Child (Staircase 2) |
 | Vanessa Ifediora als Sister Maria Felicitas |
| Esther Rae Tillotson als Alicia Drake (Young) |
| Winnie Soldi als Police Captain |
| Kenneth Branagh | Director |
| Agatha Christie | Novel |
| Michael Green | Screenplay |
| Judy Hofflund | Producer |
| Louise Killin | Executive Producer |
| James Prichard | Executive Producer |
| Ridley Scott | Producer |
| Simon Kinberg | Producer |
| Haris Zambarloukos | Director of Photography |
| Hildur Guðnadóttir | Original Music Composer |
| Kenneth Branagh | Producer |
| Mark Gordon | Executive Producer |
| Lucy Donaldson | Editor |
| Lucy Bevan | Casting |
| John Paul Kelly | Production Design |
| Peter Russell | Supervising Art Director |
| Chris Stephenson | Art Direction |
| Celia Bobak | Set Decoration |
| Sammy Sheldon | Costume Design |
| Martin Curry | First Assistant Director |
| Anna Brabbins | Second Assistant Director |
| Tomas Blazukas | Sound Designer |
| James O'Donnell | Stunt Coordinator |
| Martin Curry | Associate Producer |
| Liza Carmel | Production Manager |
| Wakana Yoshihara | Makeup Designer |
| Wakana Yoshihara | Hair Designer |
| Artemis Oikonomopoulou | VFX Supervisor |
| Dave Watkins | Special Effects Supervisor |
| Tom Darby-Evans | Production Supervisor |
| Stephanie Clerkin | Assistant Art Director |
| Emma Ryder | Assistant Art Director |
| Richard Usher | Standby Art Director |
| Simon Chase | Supervising Sound Editor |
| Oliver Ferris | Foley Artist |
| Sophia Hardman | Foley Editor |
| James Hayday | Sound Effects Editor |
| Adam Mendez | Foley Mixer |
| Andy Nelson | Sound Re-Recording Mixer |
| Colin Nicolson | Production Sound Mixer |
| Mark Taylor | Sound Re-Recording Mixer |
| Katie Brydon | Casting Associate |
| Holly Freeman | Costume Supervisor |
| Andrea Mengoni | Grip |
| Dan Lowe | Gaffer |
| Lorenzo Forense | Grip |
| Ashleigh Marner | Special Effects Coordinator |
| Gavin Gregory | Visual Effects Producer |
| Massimiliano Ubaldi | Stunt Coordinator |
| Callum Haden | Dressing Prop |
| Alessio Cianciuolo | Rigging Grip |
| James Mather | Supervising Sound Editor |
| Dave Mackie | Foley Editor |
| Sue Harding | Foley Artist |
| Pip Cope | Stunts |
| Peter Alberti | Stunts |
| Nikita Mitchell | Stunts |
| Doren John Farmer | Stunts |
| Christina Petrou | Stunts |
| Matt Curtis | Title Designer |
