Daniel Radcliffe (Harry Potter), Rupert Grint (Ron Weasley), Emma Watson (Hermione Granger), Kenneth Branagh (Gilderoy Lockhart), John Cleese (Nearly Headless Nick (Sir Nicholas)), Robbie Coltrane (Rubeus Hagrid), Warwick Davis (Filius Flitwick) more..., Richard Griffiths (Vernon Dursley), Richard Harris (Albus Dumbledore), Jason Isaacs (Lucius Malfoy), Alan Rickman (Severus Snape), Fiona Shaw (Petunia Dursley), Maggie Smith (Minerva McGonagall), Julie Walters (Molly Weasley), David Bradley (Argus Filch), Tom Felton (Draco Malfoy), Sean Biggerstaff (Oliver Wood), Robert Hardy (Cornelius Fudge), Shirley Henderson (Moaning Myrtle), Gemma Jones (Poppy Pomfrey), Miriam Margolyes (Pomona Sprout), Mark Williams (Arthur Weasley), Harry Melling (Dudley Dursley), Bonnie Wright (Ginny Weasley), James Phelps (Fred Weasley), Oliver Phelps (George Weasley), Chris Rankin (Percy Weasley), Toby Jones (Dobby (voice)), Josh Herdman (Gregory Goyle), Jamie Waylett (Vincent Crabbe), Christian Coulson (Tom Riddle), Matthew Lewis (Neville Longbottom), Alfred Enoch (Dean Thomas), Devon Murray (Seamus Finnigan), Luke Youngblood (Lee Jordan), Hugh Mitchell (Colin Creevey), Edward Randell (Justin Finch-Fletchley), Veronica Clifford (Mrs Mason), Jim Norton (Mr Mason), Tom Knight (Mr Granger) and others.

J.K. Rowling (Novel), Steve Kloves (Screenplay), David Heyman (Producer), John Williams (Original Music Composer), Roger Pratt (Director of Photography), Peter Honess (Editor), Karen Lindsay-Stewart (Casting) more..., Stuart Craig (Production Design), Andrew Ackland-Snow (Art Direction), Mark Bartholomew (Art Direction), Peter Francis (Art Direction), Stephanie McMillan (Set Decoration), Lindy Hemming (Costume Design), Clare Le Vesconte (Makeup Artist), Martin Cantwell (Sound Effects Editor), Dennis Leonard (Supervising Sound Editor), Jonathan Abbas-Klahr (Special Effects), Greg Powell (Stunt Coordinator), Sean Baker (Stunts), Nick Dudman (Makeup Designer), William Ross (Conductor), Michael Barnathan (Executive Producer), David Barron (Executive Producer), Chris Columbus (Executive Producer), Mark Radcliffe (Executive Producer), Tanya Seghatchian (Co-Producer), Paula DuPré Pesmen (Associate Producer), Steven Lawrence (Art Direction), Lucinda Thomson (Art Direction), Joanne Cook (Art Department Assistant), Jodie Jackman (Art Department Coordinator), Peter Dorme (Assistant Art Director), Amanda Pettett (Construction Coordinator), Antoinette Perez (Line Producer), Keith Connolly (Painter), Bryn Court (Sculptor), Patricia Johnson (Set Designer), Paul Couch (Standby Painter), Ken Coles (Camera Operator), John Deaton (First Assistant Camera) and others.