 | Mark Wahlberg als Elliot Moore |
 | Zooey Deschanel als Alma Moore |
 | John Leguizamo als Julian |
 | Ashlyn Sanchez als Jess |
 | Betty Buckley als Mrs. Jones |
 | Spencer Breslin als Josh |
 | Robert Bailey Jr. als Jared |
 | Frank Collison als Nursery Owner |
 | Jeremy Strong als Private Auster |
 | Alan Ruck als Principal |
 | Victoria Clark als Nursery Owner's Wife |
 | M. Night Shyamalan als Joey (voice) |
 | Alison Folland als Woman Reading on Bench with Hair Pin |
 | Kristen Connolly als Woman Reading on Bench |
 | Cornell Womack als Construction Foreman |
 | Curtis McClarin als Construction Crew Member |
 | Robert Lenzi als Jake |
 | Derege Harding als Train Conductor |
 | Roberto Lombardi als Father in Elliot's Group |
 | Kerry O'Malley als Woman on Cell Phone |
 | Shayna Levine als Teenage Girl in Jeep |
 | Stéphane Debac als French Bicyclist |
 | Cyrille Thouvenin als French Bicyclist's Friend |
 | Babita Hariani als Medical Correspondent |
| Alicia Taylor als U.S. Reporter |
 | Edward James Hyland als Professor Kendall Wallace |
 | Armand Schultz als Talk Show Host |
 | Stephen Singer als Dr. Ross |
| Sophia Burke als Student Named Laura |
| Alex Van Kooy als Boy In Class |
 | Charlie Saxton als Student Named Dylan |
| Kathy Hart als Vice Principal |
| Lisa Furst als Teacher in Auditorium |
 | Rick Foster als Railway Police Officer |
| Marc H. Glick als P.A. System Conductor |
 | Don Castro als Philadelphia Police Officer |
 | Bill Chemerka als Taxi Driver - Sal |
 | Jann Ellis als Older Woman with Dog |
| Whitney Sugarman als Passenger |
| Mary Ellen Driscoll als Woman Passenger |
 | Greg Wood als Passenger at Counter |
 | Peter Appel als Diner Owner |
| Eoin O'Shea als Passenger #1 |
| Michael Quinlan als Passenger #2 |
 | Lyman Chen als Passenger #3 |
 | Brian O'Halloran als Jeep Driver |
 | Megan Grace als Jeep Passenger #1 |
 | Rich Chew als Jeep Passenger #2 |
| Keith Bullard als Man In Crowd At Crossroads |
 | Joel de la Fuente als Realtor |
 | Ashley Brimfield als Woman In Group |
 | Mara Hobel als Woman with Hands Over Ears |
| James Breen als Farmhouse Voice (voice) |
| Carmen Bitonti als Mangled Construction Worker |
 | Brian Anthony Wilson als Arguing Man in Crowd |
| Greg SmithAldridge als Zoo Employee |
 | Ukee Washington als Local News Anchor |
 | John Ottavino als Network News Anchor |
| Sid Doherty als Radio News Announcer |
| Wes Heywood als Radio Voice (voice) |
 | Nancy Sokerka als Radio Caller Fay (voice) |
 | Julia Yorks als Young Woman Voice on Phone (voice) |
| Bill Shusta als Radio Newsman (voice) |
| Kirk Penberthy als Radio Announcer (voice) |
| Alex Craft als Truck Passenger Boy |
| Allie Habberstad als Truck Passenger Girl |
 | Alex Harz als Pico - Helen's Pianist (uncredited) |
| Adam Schoon als Mr. Jones (uncredited) |
| Lee Squire als Student (uncredited) |
 | Robert Bizik als Train Passenger (uncredited) |
| Barry Mendel | Producer |
| Roger Birnbaum | Executive Producer |
| Conrad Buff IV | Editor |
| Tak Fujimoto | Director of Photography |
| Douglas Aibel | Casting |
| John Bernard | Line Producer |
| M. Night Shyamalan | Director |
| Sam Mercer | Producer |
| Jose L. Rodriguez | Producer |
| Ronnie Screwvala | Executive Producer |
| James Newton Howard | Original Music Composer |
| Stephanie Holbrook | Casting |
| M. Night Shyamalan | Producer |
| Gary Barber | Executive Producer |
| John Rusk | Producer |
| Zarina Screwvala | Executive Producer |
| Jeannine Oppewall | Production Design |
| Deven Khote | Producer |
| M. Night Shyamalan | Screenplay |
| Donald Mowat | Makeup Artist |
| Mandy Kowalski | Stunt Double |
| Tina Fuchs Wanner | Stunts |
| Rose Sias | Stunts |
| Joanna Shelmidine | Stunts |
| Tracey Ruggiero | Stunts |
| Jodi Michelle Pynn | Stunts |
| Kimberly Shannon Murphy | Stunts |
| Tina Mckissick | Stunts |
| Mandy Kowalski | Stunts |
| Jessica Harbeck | Stunts |
| Deborah Habberstad | Stunts |
| Jeannie Epper | Stunts |
| Katie Eischen | Stunts |
| Julia Dumenigo | Stunts |
| Jennifer Cobb | Stunts |
| Karen Carbone | Stunts |
| Anthony Dunne | Art Direction |
| Jay Hart | Set Decoration |
| Michael McCole | Set Decoration |
| Betsy Heimann | Costume Design |
| Ruth Myers | Costume Design |
| Robert Guerra | Assistant Art Director |
| Barbra Matis | Assistant Art Director |
| Jolie Scherberger | Set Dresser |
| Steve Sysko | Set Dresser |
| Lee Dichter | Sound Re-Recording Mixer |
| Robert Fernandez | Sound Re-Recording Mixer |
| Wyatt Sprague | Sound Effects Editor |
| Paul Urmson | Supervising Sound Editor |
| Paul Urmson | Sound Re-Recording Mixer |
| Paul Urmson | Sound Designer |
| David Ebner | Visual Effects Supervisor |
| Edward Hirsh | Visual Effects Supervisor |
| Richard Ivan Mann | Visual Effects Producer |
| Jeff Olson | Visual Effects Producer |
| Adrienne Greshock | Set Costumer |
| Nick Scarano | Costume Supervisor |
| Ric Spencer | Set Costumer |
| Hayley Stuppel | Set Costumer |
| Claire Kirk | Art Department Coordinator |
| Zade Rosenthal | Still Photographer |
| Jonathan Hagen | Camera Production Assistant |
| Mary Cybulski | Script Supervisor |
| Sharon Smith Holley | Assistant Editor |
| Luke Ciarrocchi | Editorial Production Assistant |
| Jac Rubenstein | Dialogue Editor |
| James Mazzola | Property Master |
| David Schanker | Assistant Property Master |
| Diane Heller | Key Makeup Artist |
| Don Kozma | Assistant Makeup Artist |
| Keith christensen | Key Makeup Artist |
| Craig Lyman | Makeup Artist |
| Ozzy Alvarez | Makeup Artist |
| Rita Parillo | Key Hair Stylist |
| Diane Dixon | Additional Hairstylist |
| Billy Miller | Key Grip |
| Les G. Jones | Associate Producer |
| Paveil Raymont | Key Production Assistant |
| Markus Mentzer | Second Assistant "A" Camera |
| Chris Cenatiempo | Stunts |
| Peter Epstein | Stunts |
