Cillian Murphy as Tom Buckley

Sigourney Weaver as Margaret Matheson

Robert De Niro as Simon Silver

Toby Jones as Paul Shackleton

Joely Richardson as Monica Handsen

Elizabeth Olsen as Sally Owen

Craig Roberts as Ben

Leonardo Sbaraglia as Palladino

Adriane Lenox as Rina

Garrick Hagon as Howard McColm

Burn Gorman as Benedict Cohen

Mitchell Mullen as Jim Carroll

Nathan Osgood as Michael Sidgwick

Madeleine Potter as Sarah Sidgwick

Eloise Webb as Susan Sidgwick

Jeany Spark as Traci Northrop

Jan Cornet as David Matheson

Robert G. Slade as Interviewer - 70's

Eugenio Mira as Young Simon Silver

Lynn Blades as Dana

Eben Young as Dick

Becci Gemmell as Lucy Marconi

Jee-Yun Lee as Fiona Stewart

Emma Reynolds as Female Reporter #1

Karen David as Female Reporter #2

Molly Malcolm as Female Reporter #3

Peter Brooke as Male Reporter #1

Robert Paterson as Male Reporter #2

Jason Lewis as Male Reporter #3

Jeff Mash as Male Reporter #4

Liliana Cabal as Female Reporter - SPRC

Harris Gordon as Male Reporter - SPRC

Ignacio Carreño as Man in the Bathroom

Josette Simon as Corrine

Carlos Bermúdez Sagrera as Stevie

Anselmo Cuesta as Stevie's Father

Grant Russell as Pilot

Patricia Potter as Female Doctor

Ray Olubowale as Bodyguard

Simon Lee Phillips as Standing Spectator

Anna Dorca as Katia Novkova

Gina Bramhill as Judi Cale

Joel Vigo as Richard Vargas

Jajube Mandiela as Girl With Piercings

Jesse Bostick as TV Boy

Roscoe van Dyke as Biker

Paulette Sinclair as Woman in Wheel-Chair

Jean Daigle as Sally's Father

Ann Turnbull as Sally's Mother

Eric Loren as Policeman

Max Hausmann as Doctor Campbell

Julius Cotter as Dr. Jennings

Mercé Vidal as Doctor Heynes

Miquel Bordoy as Professor Franklin

Benjamin Nathan-Serio as Student in Magna Room

Markus Parilo as Notebook Man

Kathy Imrie as Indigent Woman

Howard Swinson as Old Man on the Bench

Larissa Bouvier as Teenager on the Bench

Syd Mostow as Martin Weiner

Brian Lehane as Psychic Surgery Patient

Aidan Shipley as Tom's Soldier Son

Wendy Boyd as 45-year-old Sally

Anna Ferguson as Older Sally

Xavier Capdet as Beadle

Alicia Caycho as Maria Vargas

Clelia Bain as Dorina Vargas

Richard Felix as Man in Bathroom #1

Joshua Zamrycki as Man in Bathroom #2

Óscar Rodríguez as Decoy

Lex Lang as Presenter #1

Bridget Hoffman as Radio Duo Female Voice (voice)

Rif Hutton as Radio Duo Male Voice (voice)

Grant George as Presenter #2

Angelina Wahler as Susan Sidgwick (voice)

Simon Brading as Silver's Assistant (uncredited)

Pablo Derqui as David (uncredited)

Nikol Kollars as Lab Telekinesis Scientist (uncredited)

Blaine McKenzie as Psychic Show Fan (uncredited)

Francesc Mestre as Viewer (uncredited)

Jack Queralt as Journalist (uncredited)

Juan Carlos Ramil as Cameraman (uncredited)

Jean Claude Ricquebourg as Simon Silver's Assistant (uncredited)

Judith Teruel as Scientific Researcher (uncredited)