Mark Wahlberg
as Elliot Moore

Zooey Deschanel
as Alma Moore

John Leguizamo
as Julian

Ashlyn Sanchez
as Jess

Betty Buckley
as Mrs. Jones

Spencer Breslin
as Josh

Robert Bailey Jr.
as Jared

Frank Collison
as Nursery Owner

Jeremy Strong
as Private Auster

Alan Ruck
as Principal

Victoria Clark
as Nursery Owner's Wife

M. Night Shyamalan
as Joey (voice)

Alison Folland
as Woman Reading on Bench with Hair Pin

Kristen Connolly
as Woman Reading on Bench

Cornell Womack
as Construction Foreman

Curtis McClarin
as Construction Crew Member

Robert Lenzi
as Jake

Derege Harding
as Train Conductor

Roberto Lombardi
as Father in Elliot's Group

Kerry O'Malley
as Woman on Cell Phone

Shayna Levine
as Teenage Girl in Jeep

Stéphane Debac
as French Bicyclist

Cyrille Thouvenin
as French Bicyclist's Friend

Babita Hariani
as Medical Correspondent

Alicia Taylor
as U.S. Reporter

Edward James Hyland
as Professor Kendall Wallace

Armand Schultz
as Talk Show Host

Stephen Singer
as Dr. Ross

Sophia Burke
as Student Named Laura

Alex Van Kooy
as Boy In Class

Charlie Saxton
as Student Named Dylan

Kathy Hart
as Vice Principal

Lisa Furst
as Teacher in Auditorium

Rick Foster
as Railway Police Officer

Marc H. Glick
as P.A. System Conductor

Don Castro
as Philadelphia Police Officer

Bill Chemerka
as Taxi Driver - Sal

Jann Ellis
as Older Woman with Dog

Whitney Sugarman
as Passenger

Mary Ellen Driscoll
as Woman Passenger

Greg Wood
as Passenger at Counter

Peter Appel
as Diner Owner

Eoin O'Shea
as Passenger #1

Michael Quinlan
as Passenger #2

Lyman Chen
as Passenger #3

Brian O'Halloran
as Jeep Driver

Megan Grace
as Jeep Passenger #1

Rich Chew
as Jeep Passenger #2

Keith Bullard
as Man In Crowd At Crossroads

Joel de la Fuente
as Realtor

Ashley Brimfield
as Woman In Group

Mara Hobel
as Woman with Hands Over Ears

James Breen
as Farmhouse Voice (voice)

Carmen Bitonti
as Mangled Construction Worker

Brian Anthony Wilson
as Arguing Man in Crowd

Greg SmithAldridge
as Zoo Employee

Ukee Washington
as Local News Anchor

John Ottavino
as Network News Anchor

Sid Doherty
as Radio News Announcer

Wes Heywood
as Radio Voice (voice)

Nancy Sokerka
as Radio Caller Fay (voice)

Julia Yorks
as Young Woman Voice on Phone (voice)

Bill Shusta
as Radio Newsman (voice)

Kirk Penberthy
as Radio Announcer (voice)

Alex Craft
as Truck Passenger Boy

Allie Habberstad
as Truck Passenger Girl

Alex Harz
as Pico - Helen's Pianist (uncredited)

Adam Schoon
as Mr. Jones (uncredited)

Lee Squire
as Student (uncredited)

Robert Bizik
as Train Passenger (uncredited)