The Young and Prodigious T.S. Spivet

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 Standjofski

Policeman