Sam Worthington ... Perseus
Liam Neeson ... Zeus
Ralph Fiennes ... Hades
Jason Flemyng ... Calibos / Acrisius
Gemma Arterton ... Io
Alexa Davalos ... Andromeda
Tine Stapelfeldt ... Danae
Mads Mikkelsen ... Draco
Luke Evans ... Apollo
Izabella Miko ... Athena
Liam Cunningham ... Solon
Hans Matheson ... Ixas
Ashraf Barhom ... Ozal
Mouloud Achour ... Kucuk
Ian Whyte ... Sheikh Sulieman