Brad Pitt
as Mr. O'Brien

Sean Penn
as Jack

Jessica Chastain
as Mrs. O'Brien

Hunter McCracken
as Young Jack

Laramie Eppler
as R.L.

Tye Sheridan
as Steve

Fiona Shaw
as Grandmother

Jessica Fuselier
as Guide

Nicolas Gonda
as Mr. Reynolds

Will Wallace
as Architect

Kelly Koonce
as Father Haynes

Bryce Boudoin
as Robert

Jimmy Donaldson
as Jimmy

Kameron Vaughn
as Cayler

Cole Cockburn
as Harry Bates

Dustin Allen
as George Walsh

Brayden Whisenhunt
as Jo Bates

Joanna Going
as Jack's Wife

Irene Bedard
as Messenger

Michael Koeth
as Jack @ 2

Finnegan Williams
as Jack @ 5

John Howell
as R. L. @ 2

Samantha Martinez
as Samantha

Savannah Welch
as Mrs. Kimball

Tamara Jolaine
as Mrs. Stone

Julia M. Smith
as Beth

Anne Nabors
as Rue

Christopher Ryan
as Prisoner

Tyler Thomas
as Tyler Stone

Michael Showers
as Mr. Brown

Kimberly Whalen
as Mrs. Brown

Margaret Hoard
as Jane

Wally Welch
as Clergyman

Hudson Lee Long
as Mr. Bagley

Michael Dixon
as Dusty Walsh

William Hardy
as Jack's Work Colleague

Tommy Hollis
as Tommy

Cooper Franklin Sutherland
as Robert #2

John Cyrier
as Bi-Plane Pilot

Erma Lee Alexander
as Erma

Nicholas Yedinak
as Nicholas Swimmer

Erinn Allison
as Mrs. Bates (uncredited)

Mary Anzalone
as School Teacher (uncredited)

Charlotte Biggs
as 1950s' Woman (uncredited)

Benjamin Dane
as Symphony Patron (uncredited)

Michael E. Harvey
as Lame Man (uncredited)

Matt Hislope
as Clown (uncredited)

Jackson Hurst
as Uncle Ray (uncredited)

Zach Irsik
as Jack's Son (uncredited)

Scottie Jefferies
as Businessman (uncredited)

Gregory Kelly
as Prisoner (uncredited)

Carlotta Maggiorana
as Ragazza-angelo (uncredited)

Crystal Mantecon
as Elisa (uncredited)

Jodie Moore
as Mr. Walsh (uncredited)

Kathryn Rawson
as Capitol Secretary (uncredited)

Danielle Rene
as Woman (uncredited)

Debbi Tucker
as Neighbor (uncredited)