Kenneth Branagh
as Hercule Poirot

Tom Bateman
as Bouc

Annette Bening
as Euphemia Bouc

Russell Brand
as Windlesham

Ali Fazal
as Andrew Katchadourian

Dawn French
as Bowers

Gal Gadot
as Linnet Ridgeway

Armie Hammer
as Simon Doyle

Rose Leslie
as Louise Bourget

Emma Mackey
as Jacqueline de Bellefort

Sophie Okonedo
as Salome Otterbourne

Jennifer Saunders
as Marie Van Schuyler

Letitia Wright
as Rosalie Otterbourne

Michael Rouse
as Private Laurin

Alaa Safi
as Corporal

Orlando Seale
as Captain Rens

Charlie Anson
as Sergeant Verhaeren

Danny Hughes
as Soldier 1

Sam James Page
as Soldier 2

James Schofield
as German Soldier 1

George Jaques
as German Soldier 2

Jonah Rzeskiewicz
as German Soldier 3

Eleanor de Rohan
as Nurse

Susannah Fielding
as Katherine

Adam Garcia
as Syd (Photographer)

Rick Warden
as Monsieur Blondin

Noel White
as Maître 'D Chez Ma Tente

Edward Riches
as Rhythm Guitar (Band)

Dan Ellis
as Drums (Band)

Megan Affonso
as Piano (Band)

Gwen Reed
as Upright Bass (Band)

Jay Phelps
as Trumpet (Band)

Lois Au
as Saxophone (Band)

Rosie Dwyer
as Hotel Staff 2

Niamh Lynch
as Female Porter

Nari Blair-Mangat
as Hotel Staff 3

Sid Sagar
as Concierge

Brenda-Jane Newhouse
as Receptionist

Rhiannon Clements
as Hotel Administrator

Daniel Cook
as Hotel Staff 1

Heider Ali
as Spice Market Merchant

Hayat Kamille
as Snake Handler

Crispin Letts
as Officier Besner

Victor Alli
as Marc Yves

Rachel Feeney
as Maxine Cardiff

Sarah Eve
as Hattie Pyne

Aron Julius
as Will Goodwin

Francis Lovehall
as Allerton McNaught

Stacy Abalogun
as Elinor Glyn

Naveed Khan
as Captain Mahmoud

Katie Smale
as Berel Genevese

Kemi Awoderu
as Alessande Johar