Jared Leto

Nemo Nobody (Adult / Old)

Sarah Polley

Adult Elise

Diane Kruger

Adult Anna

Linh-Dan Pham

Adult Jean

Rhys Ifans

Nemo's Father

Natasha Little

Nemo's Mother

Toby Regbo

Nemo age 16

Juno Temple

Anna age 15

Allan Corduner

Dr. Feldheim

Daniel Mays

Young Journalist

Clare Stone

Elise age 15

Audrey Giacomini

Jean age 15

Thomas Byrne

Nemo age 9

Laura Brumagne

Anna age 9

Noa De Costanzo

Nemo age 5

Léa Thonus

Elise age 9

Anaïs Van Belle

Jean age 9

Harold Manning

TV Host

Pascal Duquenne

Henry

David Schaal

Thug 1

Laurent Capelluto

Man in Black

Harry Cleven

Man in Black 2

Andrew Simms

Showroom Man

Ben Mansfield

Stefano age 22-40

Emily Tilson

Eve

Roline Skehan

Joyce

Anders Morris

Noah

Nathan Boydell

Paul

Vincent Dupont

Michael

Jenna Wheeler-Hughes

Showroom Girl

Valérie-Marie Chadelaud

Showroom Woman

Stéphane Thiry

Male Nurse 1

Bruno Verstraete

Male Nurse 2

Alice van Dormael

Angel of Oblivian 1

Juliette Van Dormael

Angel of Oblivian 2

Tedd Dillon

Texan Man

Melanie Doerr

Texan Woman

Talya Rubin

Shy Woman

Vito DeFilippo

Shy Man

Corey Cleve Bentivegna

Boy of Shy Couple

Sandrine Laroche

Desillusioned Woman

Olivier Bony

Desillusioned Man

Laura Van Hove

Teenage Girl

Jack Proudlove

Teenage Boy

Marc Zinga

Gay Man 1

Martin Swabey

Gay Man 2

Philippe Godeau

Golf Player / Sad Man

Sarah Gravel

Sad Woman

John Canoe

Mohawk Man

Donna Kanerahtenha Jacobs

Mohawk Woman

Fujio Ishimaru

Japanese Gardener

Robin Carette

Nemo 18 months

Hugo Harold-Harrison

Pool Instructor

Sylvie Olivé

Family Mars Mother

Stéphane Taillasson

Famly Mars Father

Jules Taillasson

Family Mars Son

Jan Hammenecker

Shoe Factory Director

Serge Larivière

Shoe Lace Supplier

Leni Parker

Teacher

Katharina Pejcic

Anna's Daughter

Alexander Türk

Anna's Son

Tanya Trombetta

Anna's Friend

Lola Pauwels

Young Stefano's Girlfriend

Daniel Brochu

Peter

Louise Sophia Engel

Nemo & Anna's Daughter

Aaron Landt

Nemo & Anna's Son

Christelle Cornil

Coma Nurse 1

Tawny Andersen

Coma Nurse 2

Christophe Beaucarne

Villa Owner

Jules Eerdekens

Pool Maintenance Collegue 1

Philippe Lévy

Pool Maintenance Collegue 2

Renaud Alcalde

Spaceship Neighbour 1

Dominique Warnier

Spaceship Neighbour 2

Catherine Demaiffe

Tender Nurse

Pierre Chaves

Hotel Entrance Guard

Nicholas Beveney

Black Man Airport

David Kennedy

Thug 2

Josselin Moinet

Morgue Policeman

Virginie Bordes

Continuity Girl

Carlo Mestroni

Police Officer

Nicolas Ross

Anna & Peter's Son

Marie-Ève Beauregard

Anna & Peter's Daughter

Manfred Andrae

Anna's Neighbour

Thi-Mai Nguyen

Prehistoric Pregnant Woman

John Churchill

Boy on Slide

Barney

Bear (uncredited)