| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alan C. Blomquist | Crew | Production | Executive Producer |
Alexis Labra | Crew | Art | Property Master |
Andy Malcolm | Crew | Sound | Foley |
 Audrey Wells | Crew | Writing | Screenplay |
 Bruce Winant | Crew | Production | ADR Voice Casting |
Byron Brisco | Crew | Crew | Stunts |
 Cathryn Michon | Crew | Writing | Screenplay |
Corinne Villa | Crew | Crew | Visual Effects Editor, First Assistant Editor |
Craig Sandells | Crew | Art | Set Decoration |
 Darren Ross | Crew | Crew | Stunts |
Doug Morrow | Crew | Costume & Make-Up | Makeup Department Head |
Eliza Paley | Crew | Sound | Supervising Sound Editor |
 Gavin Polone | Crew | Production | Producer |
 Goro Koyama | Crew | Sound | Foley |
John Clarke | Crew | Lighting | Gaffer |
 John Papsidera | Crew | Production | Casting |
Jon Campfens | Crew | Visual Effects | Visual Effects Supervisor |
Joseph Lederer | Crew | Camera | Still Photographer |
Kim Todd | Crew | Production | Co-Producer |
Larry Spittle | Crew | Art | Art Direction |
 Lasse Hallström | Crew | Directing | Director |
Mariusz Glabinski | Crew | Sound | Sound Designer |
 Mark Sourian | Crew | Production | Executive Producer |
 Marny Eng | Crew | Crew | Stunt Coordinator |
 Maya Forbes | Crew | Writing | Screenplay |
Michael Barry | Crew | Sound | Sound Re-Recording Mixer |
Michael Carlin | Crew | Art | Production Design |
Michael Feuser | Crew | Sound | Sound Editor |
Parris Mayhew | Crew | Camera | Steadicam Operator |
Patricia J. Henderson | Crew | Costume & Make-Up | Assistant Costume Designer |
Paul Suderman | Crew | Camera | Camera Operator |
Peter Denomme | Crew | Visual Effects | Visual Effects Producer |
Pina Robinson | Crew | Costume & Make-Up | Hair Department Head |
 Rachel Portman | Crew | Sound | Music, Original Music Composer |
 Rick Skene | Crew | Crew | Stunt Driver |
Robby Baumgartner | Crew | Camera | Additional Photography |
Robert Leighton | Crew | Editing | Editor |
Réjean Labrie | Crew | Art | Art Direction |
Shay Cunliffe | Crew | Costume & Make-Up | Costume Design |
Terry Stacey | Crew | Camera | Director of Photography |
 Wallace Wolodarsky | Crew | Writing | Screenplay |
Brendan Taylor | Crew | Visual Effects | Visual Effects Producer |
 Dan Skene | Crew | Crew | Stunt Driver |
 Deanna Brigidi | Crew | Production | Casting Associate |
 Garth Merkeley | Crew | Crew | Stunts |
Holly Bario | Crew | Production | Co-Producer |
Khali Wenaus | Crew | Art | Art Department Coordinator |
Sacha Rosen | Crew | Sound | Boom Operator |
 Sean Skene | Crew | Crew | Stunt Driver |
Tim Stipan | Crew | Editing | Digital Intermediate |
 W. Bruce Cameron | Crew | Writing | Screenplay, Novel |
Lawrence Zipf | Crew | Sound | Sound Re-Recording Mixer |
Anders Strome | Crew | Crew | Stunts |
Pascal Boisvert | Crew | Camera | Underwater Camera |
Kim A. Winther | Crew | Production | Casting Assistant |
 Skip Lievsay | Crew | Sound | Sound Re-Recording Mixer |
Philippe Majdalani | Crew | Editing | Digital Intermediate |
James M. McClure | Crew | Lighting | Gaffer |
 Shannon Guile | Crew | Crew | Stunts |
Greg Behrens | Crew | Visual Effects | Visual Effects Producer |
Lesley Oswald | Crew | Production | Co-Producer |
 Kristen Sawatzky | Crew | Crew | Stunts |
Lidia Tamplenizza | Crew | Editing | Dialogue Editor |
Keith Eidse | Crew | Camera | Camera Operator |
 Naomi Frenette | Crew | Crew | Stunts |
Lauren Pfeiffer | Crew | Production | Executive Producer |
Philip Edward Alexy | Crew | Visual Effects | Lead Animator |
Dominic Cheung | Crew | Visual Effects | Animation |
Bruno Tacchino | Crew | Visual Effects | Animation |
Jamie Tracey | Crew | Visual Effects | VFX Editor |
Jack Eatok | Crew | Visual Effects | Visual Effects Coordinator |
Emily Jerome | Crew | Visual Effects | Visual Effects Coordinator |
Mel Martin | Crew | Visual Effects | Visual Effects Coordinator |
Ralph Ortega | Crew | Visual Effects | Visual Effects Coordinator |
Jasmine Scott | Crew | Visual Effects | Visual Effects Coordinator |
Tim Freestone | Crew | Crew | Special Effects Coordinator |
 Connor Peterson | Crew | Crew | Stand In |
Bill Mills | Crew | Camera | Key Grip |
Mylan Stepanovich | Crew | Production | Production Manager |
 Caroline Cave | Cast | Actress | Ellen - Boss' Wife |
 Chris Webb | Cast | Actor | Kidnapper |
 Dean Mckenzie | Cast | Actor | Detective |
 Dennis Quaid | Cast | Actor | Adult Ethan |
 Gabrielle Rose | Cast | Actress | Grandma Fran |
 Jane McGregor | Cast | Actress | Rachel |
 John Bluethner | Cast | Actor | Professor |
 John Ortiz | Cast | Actor | Carlos |
 Kalyn Bomback | Cast | Actress | Yolanda |
 Kelly-Ruth Mercier | Cast | Actress | Atlanta Vet |
 Kwesi Ameyaw | Cast | Actor | Cop |
 Luke Kirby | Cast | Actor | Jim - Ethan's Dad |
 Michael Bofshever | Cast | Actor | Grandpa Bill |
 Nicole LaPlaca | Cast | Actress | Wendi |
 Paul Jarrett | Cast | Actor | Police Lieutenant |
 Peggy Lipton | Cast | Actress | Adult Hannah |
 Peter Kelamis | Cast | Actor | Dad's Boss |
 Pooch Hall | Cast | Actor | Al |
 Alicia Johnston | Cast | Actress | Hysterical Mother |
 Britt Robertson | Cast | Actress | Teen Hannah |
 Josh Gad | Cast | Actor | Dogs: Bailey / Buddy / Tino / Ellie (voice) |
 Juliet Rylance | Cast | Actress | Elizabeth - Ethan's Mom |
 Logan Miller | Cast | Actor | Todd |
 Michael Patric | Cast | Actor | Sam |
 Primo Allon | Cast | Actor | Victor |
 Robert Mann | Cast | Actor | Delivery Workman |
 Ross Douglas Noble | Cast | Puppy Mill Customer | |
 Kirby Howell-Baptiste | Cast | Actress | Maya Williams |
Paul Griggs | Cast | Hot Dog Vendor | |
 K.J. Apa | Cast | Actor | Teen Ethan |
 Bryce Gheisar | Cast | Actor | Ethan - 8 Years Old |
Brooke Warrington | Cast | Actress | Bree |
Ron Verwymeren | Cast | Delivery Workman | |
David J. Lyle | Cast | Country Vet | |
 Cory Wojcik | Cast | Actor | Puppy Mill Owner |
Andrew W. Nolan | Cast | Football Coach | |
Jordan Butterill | Cast | Teammate | |
 John C. MacDonald | Cast | Actor | Teammate |
Brent Holtzman | Cast | Police Captain | |
 Christopher Pearce | Cast | Actor | Policeman |
Violet Haas | Cast | Actress | Elderly Woman |
Darcy Higginbotham | Cast | Farm Hand | |
Danesha Lee | Cast | Animal Control Officer | |
 Dan De Jaeger | Cast | Actor | Father at Shelter |
 Anita Daher | Cast | Actress | Mother at Shelter |
Reine Lecuyer | Cast | Actress | Daughter at Shelter |
Rayna Ens-Armstrong | Cast | Actress | Daughter at Shelter |
Mackenzie Thornton | Cast | Actress | Tweener Girl |
Avery Thompson | Cast | Actress | Tweener Girl |
 Aidan Ritchie | Cast | Actor | Ambulance Attendant |
Kenyan Alexander Walcot | Cast | Ty - 5 Years Old | |
Treyton Augustus Walcot | Cast | Richie - 4 Years Old | |
James Janssens | Cast | Alzheimer's Patient | |
Grant Burr | Cast | Hardware Store Clerk | |
Ronald Boyd Johnson | Cast | Neighbor | |
Naomi Frenette | Cast | Actress | Kidnapped Girl |
Evan Martin | Cast | Punk Boy | |
Tyson Wagner | Cast | Actor | Boyfriend in Park |
| Person | Type | Job | Role(s) |
