* Daniel Radcliffe as Harry Potter
* Rupert Grint as Ron Weasley
* Emma Watson as Hermione Granger
* Robert Pattinson as Cedric Diggory
* Ralph Fiennes as Lord Voldemort
* Michael Gambon as Albus Dumbledore
* Alan Rickman as Severus Snape
* Maggie Smith as Minerva McGonagall
* Brendan Gleeson as Alastor "Mad-Eye" Moody
* Miranda Richardson as Rita Skeeter
* Frances de la Tour as Madame Maxime
* Roger Lloyd-Pack as Bartemius Crouch Sr.
* Katie Leung as Cho Chang
* Robert Hardy as Cornelius Fudge
* Gary Oldman as Sirius Black
* Bonnie Wright as Ginny Weasley
* Matthew Lewis as Neville Longbottom
* Tom Felton as Draco Malfoy
This is not an exhaustive list, but it covers the most prominent actors and characters in the film.