Kyle Catlett
T.S. Spivet

Helena Bonham Carter
Dr. Clair

Judy Davis
G.H. Jibsen

Callum Keith Rennie
Father

Niamh Wilson
Gracie

Jakob Davies
Layton

Rick Mercer
Roy

Robert Maillet
Giant Hobo

Dominique Pinon
Two Clouds

Julian Richings
Ricky

Richard Jutras
Lecturer

Mairtin O'Carrigan
Lecturer

Michel Perron
The vigilant

Dawn Ford
Marge

Harry Strandjofski
Policeman

Susan Glover
Cathy

James Bradford
Smithsonian President

Lisa Bronwyn Moore
Judy

Felicia Shulman
Jibsen's Secretary

Dylan Kingwell
Little Boy

Eric Davis
Towncar Driver

Rebecca Amzallag
Reception Waitress

Amber Goldfarb
Reception Waitress

Leigh Ann Taylor
Smithsonian's Receptionist

Una Kay
Reception Guest

Sylvia Stewart
Reception Guest

Sabrina Reeves
Reception Guest

Ana Alarcon
Lady at train station

Zachary Amzallag
Waiter

Kyle Allatt
Photographer

Martin Brisebois
Perpetual motion machine presenter

Victor Cornfoot
Airport Officer

Christie Claymore
Smithsonian Scientist's Date

Anne-Sophie Bozon
Figuration

Kyle Gatehouse
Student Butte Museum