Logan Lerman
Percy JacksonAlexandra Daddario
Annabeth ChaseDouglas Smith
TysonShohreh Aghdashloo
Oracolul (voce)Stanley Tucci
Dl. DRon Perlman
Polyphemus (voce)Sean Bean
Zeus (necreditat)Robert Knepper
KronosThor Freudenthal
Marc Guggenheim
Rick Riordan
Logan Lerman
Percy JacksonAlexandra Daddario
Annabeth ChaseDouglas Smith
TysonShohreh Aghdashloo
Oracolul (voce)Stanley Tucci
Dl. DRon Perlman
Polyphemus (voce)Sean Bean
Zeus (necreditat)Robert Knepper
KronosOctavia Spencer
Martha (voce)Anthony Head
Chiron (creditat Anthony Stewart Head)Nathan Fillion
HermesCraig Robinson
George (voce)Brandon T. Jackson
GroverJake Abel
LukeLeven Rambin
ClarissePaloma Kwiatkowski
ThaliaChris Columbus
Michael Barnathan
Karen Rosenfelt
Andrew Lockington
Shelly Johnson
Mark Goldblatt