 | Noah Ringer als Aang |
 | Dev Patel als Prince Zuko |
 | Nicola Peltz Beckham als Katara |
 | Jackson Rathbone als Sokka |
 | Shaun Toub als Uncle Iroh |
 | Aasif Mandvi als Commander Zhao |
 | Cliff Curtis als Fire Lord Ozai |
 | Seychelle Gabriel als Princess Yue |
 | Katharine Houghton als Katara's Grandma |
 | Francis Guinan als Master Pakku |
 | Damon Gupton als Monk Gyatso |
 | Summer Bishil als Azula |
 | Randall Duk Kim als Old Man in Temple |
 | Jessica Jade Andres als Suki |
 | John D'Alonzo als Zhao's Assistant |
 | Keong Sim als Earthbending Father |
 | Isaac Jin Solstein als Earthbending Boy |
 | Edmund Ikeda als Old Man of Kyoshi Town |
 | John Noble als The Dragon Spirit (voice) |
 | Morgan Spector als Lead Fire Nation Soldier |
 | Karim Sioud als Fire Nation Prison Guard |
 | Manu Narayan als Fire Nation Head Prison Guard |
 | Kevin Yamada als Earth Kingdom Prisoner |
 | Ted Oyama als Kyoshi Villager |
 | Ritesh Rajan als Fire Nation Soldier |
 | Georgie DeNoto als Teahouse Child |
| Manuel Ishkhanian als Nervous Prison Guard |
 | Roberto Lombardi als Fire Nation Soldier |
| Chris Brewster als Kicking Firebender |
 | Ryan Shams als Lead Archer |
 | Jeffrey Zubernis als Water Tribe Soldier |
 | Brian D. Johnson als Water Tribe Soldier |
 | J.W. Cortes als Fire Lord Attendant |
 | M. Night Shyamalan als Firebender at Earth Prison Camp (uncredited) |
 | Ben Cooke als Avatar Roku (uncredited) |
| M. Night Shyamalan | Writer |
| James Newton Howard | Original Music Composer |
| Wayne Dalglish | Stunts |
| Conrad Buff IV | Editor |
| Andrew Lesnie | Director of Photography |
| Judianna Makovsky | Costume Design |
| Barbara Harris | ADR Voice Casting |
| M. Night Shyamalan | Producer |
| Sam Mercer | Producer |
| Frank Marshall | Producer |
| Kathleen Kennedy | Executive Producer |
| Scott Aversano | Executive Producer |
| Michael Dante DiMartino | Executive Producer |
| Bryan Konietzko | Executive Producer |
| Philip Messina | Production Design |
| Pablo Helman | Visual Effects Supervisor |
| Douglas Aibel | Casting |
| Neri Kyle Tannenbaum | Unit Production Manager |
| Sam Mercer | Unit Production Manager |
| John Rusk | First Assistant Director |
| Allen Kupetsky | Second Assistant Director |
| Alison O'Brien | Visual Effects Producer |
| Jeff Habberstad | Second Unit Director |
| Jeff Habberstad | Stunt Coordinator |
| Harry Wowchuk | Stunts |
| Tom Waite | Stunts |
| Marcus Young | Stunts |
| Robert Alonzo | Stunts |
| Daniel Arrias | Stunts |
| Clayton J. Barber | Stunts |
| Erik Betts | Stunts |
| Freddy Bouciegues | Stunts |
| Jon Braver | Stunts |
| Tamiko Brownlee | Stunts |
| Jared Burke | Stunts |
| Arnold Chon | Stunts |
| Tim Connolly | Stunts |
| Brycen Counts | Stunts |
| Chris Daniels | Stunts |
| Jade Quon | Stunt Double |
| Melissa Barker | Stunt Double |
| Holland Diaz | Stunt Double |
| Stephen Oyoung | Stunt Double |
| Philip J. Silvera | Stunt Double |
| Karine Mauffrey | Stunt Double |
| Julia Dumenigo | Stunts |
| Dane Farwell | Stunts |
| Mitch Gould | Stunts |
| Roberto Gutierrez | Stunts |
| Trevor Habberstad | Stunts |
| Alex Huynh | Stunts |
| Peter Iacangelo III | Stunts |
| Keone Kim | Stunts |
| Lauren Mary Kim | Stunts |
| Don Lee | Stunts |
| Michelle Lee | Stunts |
| Christopher Leps | Stunts |
| Eric Linden | Stunts |
| Hiroo Minami | Stunts |
| William Morts | Stunts |
| Becky Ohmes | Stunts |
| Marque Ohmes | Stunts |
| Ho-Sung Pak | Stunts |
| Ming Qiu | Stunts |
| Dana Reed | Stunts |
| Elliot Santiago | Stunts |
| Myke Schwartz | Stunts |
| Larry M. Shorts | Stunts |
| Craig Frosty Silva | Stunts |
| Brian Simpson | Stunts |
| Gary Ray Stearns | Stunts |
| Nuo Sun | Stunts |
| Steve Tartalia | Stunts |
| Mark Vanselow | Stunts |
| Mark Aaron Wagner | Stunts |
| Gerald Scaife | Production Supervisor |
| Mark Mayer | Production Accountant |
| Richard L. Johnson | Supervising Art Director |
| Robert Fechtman | Art Direction |
| Gerald Sullivan | Art Direction |
| Patrick M. Sullivan | Art Direction |
| Larry Dias | Set Decoration |
| Kyle Rudolph | Camera Operator |
| Kyle Rudolph | Steadicam Operator |
| Bobby Mancuso | First Assistant Camera |
| Scott Tinsley | Second Assistant Camera |
| Michael Leonard | First Assistant "B" Camera |
| Leon Sanginiti | Second Assistant "B" Camera |
| Mike Panczenko Jr. | Camera Loader |
| Mary Cybulski | Script Supervisor |
| Chris Munro | Sound Mixer |
| Jay Fortune | Chief Lighting Technician |
| Brian McClean | Assistant Chief Lighting Technician |
| Brian Raby | Assistant Chief Lighting Technician |
| Phil Pastuhov | Aerial Director of Photography |
| Christopher Murphy | Video Assist Operator |
| Nicholas Gould | Video Assist Operator |
| Bill Vargo | Video Assist Operator |
| Anthony Ortiz | Boom Operator |
| Michael Scott | Boom Operator |
| Glenn Davis | Electrician |
| Kane Delaney | Electrician |
| William P. Fiedler | Electrician |
| Robert Liccio Jr. | Electrician |
| Jim McCullagh | Electrician |
| Richard A. Mitchell | Electrician |
| Kenneth Potter | Electrician |
| Lawrence Price | Electrician |
| I. Nate Scaglione | Electrician |
| Jason Velez | Electrician |
| Robin L. Miller | Property Master |
| Erick Garibay | Assistant Property Master |
| Sharon Potts | Assistant Property Master |
| Steve Cremin | Special Effects Coordinator |
| Brett C. Smith | Leadman |
| Christine Sysko | Leadman |
| Holly Davis | Assistant Costume Designer |
| Lisa Tomczeszyn | Assistant Costume Designer |
| Cha Blevins | Costume Supervisor |
| David Paulin | Ager/Dyer |
| Ivana Primorac | Hair Designer |
| Ivana Primorac | Makeup Designer |
| Lori Hicks | Makeup Department Head |
| Sandra Linn Koepper | Key Makeup Artist |
| Diane Heller | Makeup Artist |
| Jerry Popolis | Hair Department Head |
| Christine Fennell | Key Hair Stylist |
| Diane Dixon | Hairstylist |
| Janice Innella | Additional Hairstylist |
| Frank Vazquez | Additional Hairstylist |
| Wesley Wofford | Special Effects Makeup Artist |
| Carole A. Kenneally | Assistant Editor |
| Meagan Costello | Assistant Editor |
| Lauren Scott | Post Production Supervisor |
| Randy Thom | Sound Designer |
| Randy Thom | Supervising Sound Editor |
| Richard Hymns | Supervising Sound Editor |
| Randy Thom | Sound Re-Recording Mixer |
| Rick Kline | Sound Re-Recording Mixer |
| Wylie Griffin | Art Department Coordinator |
| David Raynor | Production Coordinator |
| Eric Richard Lasko | Second Second Assistant Director |
| Andrew L. Ullman | Location Manager |
| Claire Raskind | Unit Publicist |
| Zade Rosenthal | Still Photographer |
| Steve Slanec | ADR Supervisor |
| Scott Guitteau | Sound Effects Editor |
| Colette D. Dahanne | Sound Effects Editor |
| Will Files | Sound Effects Editor |
| Josh Gold | Sound Effects Editor |
| Pete Horner | Sound Effects Editor |
| Malcolm Fife | Foley Editor |
| Sue Fox | Foley Editor |
| Luke Dunn Gielmuda | Foley Editor |
| Jana Vance | Foley Artist |
| Dennie Thorpe | Foley Artist |
| Frank Rinella | Foley Mixer |
| Sean England | Foley Recordist |
| Jim Weidman | Supervising Music Editor |
| David Olson | Music Editor |
| Robert A. Blackburn | Construction Coordinator |
| Paul Williams | Construction Coordinator |
| Jeff Sutherland | Compositing Supervisor |
| Jim Passon | Color Timer |
| M. Night Shyamalan | Director |
| Armen Ksajikian | Musician |
