Kenneth Branagh as Hercule Poirot

Kyle Allen as Maxime Gerard

Camille Cottin as Olga Seminoff

Jamie Dornan as Dr Leslie Ferrier

Tina Fey as Ariadne Oliver

Jude Hill as Leopold Ferrier

Ali Khan as Nicholas Holland

Emma Laird as Desdemona Holland

Kelly Reilly as Rowena Drake

Riccardo Scamarcio as Vitale Portfoglio

Michelle Yeoh as Joyce Reynolds

Dylan Corbett-Bader as Baker

Amir El-Masry as Alessandro Longo

Fernando Piloni as Vincenzo Di Stefano

Lorenzo Acquaviva as Grocer

David Menkin as Puppet Show MC

Yaw Nimako-Asameah as Child (Cookie Gobbler)

Clara Duczmal as Child (Crying Girl)

Rowan Robinson as Alicia Drake

Stella Harris as Child (Staircase 1)

Emilio Villa-Muhammad as Child (Staircase 2)

Vanessa Ifediora as Sister Maria Felicitas

Esther Rae Tillotson as Alicia Drake (Young)

Winnie Soldi as Police Captain