Marina Foïs as Catherine / Sophie / Cécile Nicolle / dite 'Darling'

Guillaume Canet as Joël Epine dit 'Roméo'

Océane Decaudain as Catherine, Darling petite

Anne Benoît as Suzanne Nicolle - la mère de Darling

Marc Brunet as Georges Nicolle - le père de Darling

Sissi Duparc as Chantal Clément

Hervé Lassïnce as Vincent Blandamour

Eloïse Charretier as La collègue de cantine

Daniel Milgram as Le docteur Coligny

Etienne Allemand as Kevin

Samuel Allemand as Joseph petit

Christel Baras as Madame Blanchard

Kate Blanchard as La sage-femme

Olivier Blin as Routier

Raphaël Bouvet as Kevin

Denis Braccini as Médecin du travail

Sandie Cabrol as La fille Cholet

Alexandre Callec as Tom

Rémy Carpentier as Charles Tuvache

Clément Champion as Tom

Jérémie Chaplain as Joueur de foot

Hugo Clevin as Henri petit

Anne Coesens as La juge

Vincent Darre as Copain poker

Grégory Gatignol as Henri adulte

Guillaume Gouix as Joseph adulte

Arnaud Henriet as Copain poker

Julien Herbau as Joueur de foot

Elisa Heusch as Océane

Denis Jansolin as Routier

Antoine Laurent as Co-pilote

Tennessee Maquignon as Océane

Alexandra Michel as

Jacques Navet as Henri enfant

Hugo Petit as Kevin

Marie-Hélène Peyresaubes as Employée cantine scolaire

Julien Piguet as Chauffeur camion chantier

Jonathan Reyes as Joseph Nicolle enfant

Patrick Ronchin as Gerard Lenorman

Rémy Roubakha as Le bistrot

Christian Ruché as Le radiologue

Ange Ruzé as Joueur de foot

Jean-Marc Valenti as Copain poker

Jean Teulé as