 | Logan Lerman als Percy Jackson |
 | Brandon T. Jackson als Grover Underwood |
 | Alexandra Daddario als Annabeth Chase |
 | Douglas Smith als Tyson |
 | Leven Rambin als Clarisse La Rue |
 | Jake Abel als Luke Castellan |
 | Katelyn Mager als Young Thalia |
 | Grey Damon als Chris Rodriguez |
 | Paloma Kwiatkowski als Thalia Grace |
 | Anthony Stewart Head als Chiron |
 | Stanley Tucci als Mr. D / Dionysus |
 | Nathan Fillion als Hermes |
 | Robert Maillet als Polyphemus / Laistrygonian |
 | Ron Perlman als Polyphemus (voice) |
 | Connor Dunn als Tereus |
 | Alisha Newton als Young Annabeth |
 | Bjorn Yearwood als Young Grover |
 | Samuel Braun als Young Luke |
 | Mary Birdsong als Gray Sister #1 |
 | Yvette Nicole Brown als Gray Sister #2 |
 | Missi Pyle als Gray Sister #3 |
 | Octavia Spencer als Martha (voice) |
 | Christopher Redman als Reardon |
 | Jordan Weller als Ichneutae |
 | Camille Atebe als Harpy Barista |
 | Anthony Shim als Barista - Hecatonshire |
 | Robert Knepper als Kronos |
 | Richard Yearwood als Ganymede |
 | Derek Mears als Cyclops #1 |
 | Aleks Paunovic als Cyclops #2 |
 | Maxine Miller als Parcel Store Customer |
 | Shohreh Aghdashloo als Oracle (voice) |
 | Craig Robinson als George (voice) |
| Michael Barnathan | Producer |
| Mark Morgan | Executive Producer |
| Devyn Dalton | Stunts |
| Rick Riordan | Novel |
| Andrew Lockington | Music |
| Thor Freudenthal | Director |
| Marc Guggenheim | Screenplay |
| Anthony Di Ninno | Visual Effects |
| Brian N. Bentley | Compositors |
| Aravind Jayaraman | Visual Effects |
| Rohit Kolhe | Animation |
| Andrew Malesky | Animation |
| Sagar Patil | Compositors |
| Andy Asperin | VFX Artist |
| Erik Classen | VFX Artist |
| Claude Paré | Production Design |
| Bill Bannerman | Co-Producer |
| Karen Rosenfelt | Producer |
| Mark Radcliffe | Executive Producer |
| Monique Prudhomme | Costume Design |
| Jeffrey Harlacker | Associate Producer |
| Helen Jarvis | Supervising Art Director |
| Mark Edward Wright | Visual Effects Editor |
| Shelly Johnson | Director of Photography |
| Ian Blum | Animation Supervisor |
| Atlin Mitchell | Stunts |
| Chris Beach | Art Direction |
| Mark Goldblatt | Editor |
| Jerad Marantz | Character Designer |
| Anup Kulkarni | Visual Effects Design Consultant |
| Audra Neil | Set Decoration Buyer |
| Phil Langone | Storyboard Artist |
| Jane Wu | Storyboard Artist |
| Caitlin Dechelle | Stunt Double |
| Chris Columbus | Executive Producer |
| Guy Oseary | Executive Producer |
| Greg Mooradian | Executive Producer |
| Alec Gillis | Special Effects Makeup Artist |
| Tom Woodruff Jr. | Special Effects Makeup Artist |
| Alyssa Weisberg | Casting |
| Coreen Mayrs | Casting |
| Heike Brandstatter | Casting |
| Bill Bannerman | Unit Production Manager |
| Jim Brebner | First Assistant Director |
| Josy Capkun | Second Assistant Director |
| Matt Paull | Second Assistant Director |
| Julia Michels | Music Supervisor |
| Dan Kaufman | Visual Effects Supervisor |
| Shawn Beaton | Fight Choreographer |
| Scott J. Ateah | Stunt Coordinator |
| Garvin Cross | Stunt Coordinator |
| Randy Hall | Stunt Coordinator |
| Don Lee | Stunts |
| Cody Laudan | Stunts |
| Cameron Waldbauer | Stunts |
| Curtis Braconnier | Stunts |
| Brent Connolly | Stunts |
| Rhys Williams | Stunts |
| Shauna Duggins | Stunts |
| Ashlea Earl | Stunts |
| Monte Thompson | Stunts |
| Rob Mars | Stunts |
| Brian Machleit | Stunts |
| Madisen Whelband | Stunts |
| Shawn Beaton | Stunts |
| Travis Wong | Stunts |
| Martin De Boer | Stunts |
| Adrian Blake | Stunts |
| Jonel Earl | Stunts |
| Matthew Mylrea | Stunts |
| Kevin Abercrombie | Stunts |
| Shawn Robidoux | Stunts |
| Brian Lydiatt | Stunts |
| Ieisha Auyeung | Stunts |
| Chris Brewster | Stunts |
| Kimberly Chiang | Stunts |
| Todd Scott | Stunts |
| Rorelee Tio | Stunts |
| Kofi Elam | Stunts |
| Rafael Solá | Stunts |
| Andrew Chin | Stunts |
| Mike Wilson | Stunts |
| Will Erichson | Stunts |
| Dan Rizzuto | Stunts |
| Kye Walstrom | Stunts |
| Lee Whittaker | Stunts |
| Kirk Jaques | Stunts |
| Rob 'Sluggo' Boyce | Stunts |
| Grant Smith | Stunts |
| Steve Upton | Stunts |
| Laura Lee Connery | Stunts |
| Chris Geisler | Stunts |
| Nicole G. Leier | Stunts |
| Matt Thompson | Stunts |
| Eli Zagoudakis | Stunts |
| Brennan Walstrom | Stunts |
| Andrea Stefancikova | Stunts |
| Dave Macomber | Stunts |
| Bruce Crawford | Stunts |
| Mac Jeffrey Ong | Stunts |
| Holland Diaz | Stunts |
| John Bernecker | Stunts |
| Rochelle Okoye | Stunts |
| Matt Reimer | Stunts |
| Paul V. Fraser, III | Stunts |
| Jenn Harris | Stunts |
| Andre Jette | Stunts |
| Irma Evangelista | Stunts |
| Thomas DeWier | Stunts |
| David Jacox | Stunts |
| Darryl Scheelar | Stunts |
| Keanu Lam | Stunts |
| Alicia Vela-Bailey | Stunts |
| Brian Ho | Stunts |
| Dan Hermansen | Art Direction |
| Kirsten Franson | Art Direction |
| Harrison Yurkiw | Assistant Art Director |
| Chris Beach | Assistant Art Director |
| Sharon Thompson | Art Department Coordinator |
| Kris Bergthorson | Art Department Assistant |
| Erin Sinclair | Art Department Assistant |
| Wendy McAllister | Storyboard Artist |
| Amy Lynn Umezu | Storyboard Artist |
| Peter Cummings | Researcher |
| Shane Vieau | Set Decoration |
| Sigrid Spade | Assistant Set Decoration |
| Elena Dresser | Set Dresser |
| Scott Calderwood | Set Decoration Buyer |
| Elizabeth Roberts | Set Decoration Buyer |
| Michael Church | Leadman |
| Cody Larson | On Set Dresser |
| Chad Belair | Third Assistant Director |
| Brian Sepanzyk | Third Assistant Director |
| Alexandra Archer | Assistant Director Trainee |
| Peter Wilke | Camera Operator |
| John Davidson | Camera Operator |
| Taylor Matheson | First Assistant Camera |
| Sean Elliott | First Assistant Camera |
| Alex Martínez | Second Assistant Camera |
| Spiro Grant | Second Assistant Camera |
| Dan Morrison | Second Assistant Camera |
| Alexandra Matheson | Second Assistant Camera |
| Murray Close | Still Photographer |
| Salomon Saade | Camera Trainee |
| Michael McGee | Sound Mixer |
| Donald D. Brown | Boom Operator |
| Juniper Watters | Cableman |
| Dean Eilertson | Property Master |
| Michelle Hendriksen | Assistant Property Master |
| Jessica Clothier | Script Supervisor |
| Steve Ansell | Additional Editor |
| Neil Greenberg | Visual Effects Editor |
| Will Kaplan | Music Editor |
| Yvonne Valdez | First Assistant Editor |
| Zachary Dehm | Assistant Editor |
| Jason Dale | Assistant Editor |
| Florent Danny Retz | Assistant Editor |
| Shae Salmon | Assistant Editor |
| Bart Brevé | Assistant Editor |
| Molly Starke | Editorial Production Assistant |
| Jeffrey Hawkes | Editorial Production Assistant |
| Lindsay Tessier | Editorial Production Assistant |
| Sarah Long | Editorial Production Assistant |
| Katie Starke | Editorial Production Assistant |
| Jason Miller | Post Production Coordinator |
| Elliott Koretz | Sound Supervisor |
| Elliott Koretz | Sound Designer |
| Ron Bartlett | Sound Re-Recording Mixer |
| Doug Hemphill | Sound Re-Recording Mixer |
| Andrew W. Davidson | Gaffer |
| Rob Brady | Best Boy Electric |
| David Goyer | Generator Operator |
| Mike Stroman | Generator Operator |
| John Westerlaken | Key Grip |
| Matt Margolis | Best Boy Grip |
| Gil Forrester | Dolly Grip |
| Jesse Harris | Dolly Grip |
| David McIntosh | Key Rigging Grip |
| Alex Godfrey | Grip |
| Namowan Kirby | Grip |
| Jordana Meilleur | Grip |
| Bill Stefanidis | Grip |
| James Salberg | Grip |
| Peter Pacula | Rigging Grip |
| Franz Fraitzl | Rigging Grip |
| Clay McGhee | Rigging Grip |
| Scott Bonner | Rigging Grip |
| Lise Hache | Assistant Costume Designer |
| Gail Barrett | Costume Coordinator |
| Silke Guglielmo | Set Costumer |
| Yuri Everson | Animatronic and Prosthetic Effects |
| Chris Baer | Animatronic and Prosthetic Effects |
| Brian Clawson | Animatronic and Prosthetic Effects |
| Bob Mano | Animatronic and Prosthetic Effects |
| Akihito Ikeda | Animatronic and Prosthetic Effects |
| Jon K. Miller | Animatronic and Prosthetic Effects |
| Garth Winkless | Animatronic and Prosthetic Effects |
| Karen Manzel | Animatronic and Prosthetic Effects |
| Louie Becker | Animatronic and Prosthetic Effects |
| Brian Poor | Animatronic and Prosthetic Effects |
| Glen Hanz | Animatronic and Prosthetic Effects |
| Marilyn Chaney | Animatronic and Prosthetic Effects |
| Steve Koch | Animatronic and Prosthetic Effects |
| Steve Frakes | Animatronic and Prosthetic Effects |
| Paul Komoda | Animatronic and Prosthetic Effects |
| Mike Heintzelman | Animatronic and Prosthetic Effects |
| Jules Senecal | Animatronic and Prosthetic Effects |
| Matt Mastrella | Animatronic and Prosthetic Effects |
| Anthony Diaz | Animatronic and Prosthetic Effects |
| Casey Love | Animatronic and Prosthetic Effects |
| Bud McGrew | Animatronic and Prosthetic Effects |
| Jenn Seyfried | Animatronic and Prosthetic Effects |
| Timothy Martin | Animatronic and Prosthetic Effects |
| Norman Cabrera | Animatronic and Prosthetic Effects |
| David Penikas | Animatronic and Prosthetic Effects |
| Matthew Killen | Animatronic and Prosthetic Effects |
| Davis Fandino | Animatronic and Prosthetic Effects |
| Aida Caefer | Animatronic and Prosthetic Effects |
| Mike Larrabee | Animatronic and Prosthetic Effects |
| Mario Torres Jr. | Animatronic and Prosthetic Effects |
| Bill Terezakis | Makeup Effects |
| Lisa Love | Makeup Department Head |
| Leah Ehman | Assistant Makeup Artist |
| Danielle Aslin | Assistant Makeup Artist |
| Debra Wiebe | Hair Department Head |
| Andrea Simpson | Assistant Hairstylist |
| Cindy L. Larsen | Assistant Hairstylist |
| Abraham Fraser | Location Manager |
| Michael J. LeGresley | Assistant Location Manager |
| Bliss McDonald | Production Coordinator |
| Tara Mews | Assistant Production Coordinator |
| Karin Korchinski | Assistant Production Coordinator |
| Michael Williams | Production Manager |
| Cameron Waldbauer | Special Effects Coordinator |
| Jedrzej 'Jendrek' Kowalski | Assistant Location Manager |
| Scott R. Treliving | Special Effects Supervisor |
| André Dominguez | Special Effects |
| Ian Binnie | Special Effects |
| Tyler Bilodeau | Special Effects |
| W.A. Andrew Sculthorp | Special Effects Supervisor |
| Owen Walstrom | Stunt Coordinator |
| Bill Westenhofer | Visual Effects Supervisor |
