Noah Schnapp as Jo

Thomas Kretschmann as Korporal

Frederick Schmidt as Benjamin

Tómas Lemarquis as Leutnant

Gilles Marini as Papa

Elsa Zylberstein as Maman

Joséphine de la Baume as Madame

Sadie Frost as Madame Jollet

Jean Reno as Henri

Urs Rechn as Hans

Anjelica Huston as Horcada

Declan Cole as Hubert

Enola Izquierdo Cicuendez as Leah

Amandine Rose as Christine

Mathys Gallet-Lartigue as Lukas

Laurent Pedebernard as Monsieur Jollet

Jean-François Balmer as Narrator

Dolma Raisson as Anya

Raj Awasti as Soldier

Kevin Kain as The Fat and Stupid Man

Lukas Sauer as Hans

Sylvain Bressolles as Passerby

Patrice Yan as Soldier

Michael Morpurgo as Farmer

Steffen Wild as Soldier

Alan Latham as Soldier

Paul Stephenson as Soldier

William Abadie as Father Lasalle

Nicholas Rowe as Monsuier Sarthol