Tobey Maguire as Bobby Fischer

Peter Sarsgaard as Father Bill Lombardy

Liev Schreiber as Boris Spassky

Michael Stuhlbarg as Paul Marshall

Lily Rabe as Joan Fischer

Sophie Nélisse as Young Joan

Seamus Davey-Fitzpatrick as Teen Bobby Fischer

Conrad Pla as Carmine Nigro

Aiden Lovekamp as Young Bobby Fischer

Evelyne Brochu as Donna

Robin Weigert as Regina Fischer

Andreas Apergis as Uncle Paul

Katie Bird Nolan as Maria

Ilia Volok as KGB Agent

Peter Janov as KGB Agent

Spiro Malandrakis as Reporter

Arthur Holden as Party Guest #3

Raphael Grosz-Harvey as Donald Byrne

John Maclaren as Theodore Tremblay

Vitali Makarov as Yovanovic

Eric Lee Huffman as KGB Bodyguard

Brett Watson as Lothar Schmid

Shawn Campbell as Cyril Pustan

Eugene Nomura as Japanese Anchorman

Norman Lehnert as German Reporter

Edward Zinoviev as Geller

Sam Stone as Deli Customer

Jonathan Dubsky as Tremblay's Aide

Mark Slacke as Icelandic Journalist

Alexandre Gorchkov as Iivo Nei

Igor Ovadis as Russian Bookstore Owner

Bobo Vian as Bookstore Owner's Wife

Joe Cobden as Motel Clerk

Brent Skagford as Businessman (Motel)

Richard Jutras as Referee - Santa Monica

Yanick Bousquet as Foreign Reporter #1 (French)

Shanmugasunder Chetty as Foreign Reporter #2 (East Indian)

Mohsen El Gharbi as Foreign Reporter #3 (Dutch)

Andrew Peplowski as ABC News Anchor

David Pryde as 50's Reporter

Roc LaFortune as Official (Soviet Accres.)

Vito DeFilippo as Russian Opponent (Bulgaria 1967)

Ellen David as Party Guest #1 (Fischer Apt.)

Rosaruby Kagan as Party Guest #2 (Fischer Apt.)

Alain Goulem as Reporter #1 (Vancouver)

Carlo Mestroni as Reporter #2 (Vancouver)

Glen Bowser as Bus Driver

Zach Fraser as Long Haired Hippy

Alexandra Van Loon as Joan's Daughter

Marco Verdoni as Joan's Husband

Matt Keyes as JFK Airport Journalist

Edward Yankie as President Nixon

Al Vandecruys as Arbiter - Bulgaria

Al Dubois as NBC Reporter

Francois Cote as Marshall Heavy

François Ducharme as Bent Larsen

Maurice Demers as President Brezhnev

Grace Anne as Bobby Fischer Fan (uncredited)

Nathaly Thibault as Press Conference (uncredited)

Benoit Priest as Texan Trucker (uncredited)

Sigurbjörn Guðmundsson as Icelandic Policeman (uncredited)

Natalija Ugrina as Bikini Babe (uncredited)

Lydia Zadel as Kissing Woman (uncredited)

Dennis Staroselsky as (uncredited)

André Sogliuzzo as Henry Kissinger (voice, uncredited)

Bobby Fischer as Self (archive footage)