Cast (In Credits Order)

Daniel Radcliffe - Harry Potter
Rupert Grint - Ron Weasley
Emma Watson - Hermione Granger
Helena Bonham Carter - Bellatrix Lestrange
Robbie Coltrane - Rubeus Hagrid
Ralph Fiennes - Lord Voldemort
Michael Gambon - Albus Dumbledore
Brendan Gleeson - Alastor 'MadEye' Moody
Richard Griffiths - Uncle Vernon
Jason Isaacs - Lucius Malfoy
Gary Oldman - Sirius Black
Alan Rickman - Severus Snape
Fiona Shaw - Aunt Petunia
Maggie Smith - Minerva McGonagall
Imelda Staunton - Dolores Umbridge
Natalia Tena - Nymphadora Tonks
David Thewlis - Remus Lupin
Sian Thomas - Amelia Bones
Julie Walters - Molly Weasley
Mark Williams - Arthur Weasley

Rest of cast listed alphabetically:

Afshan Azad - Padma Patil
Tiana Benjamin - Angelina Johnson
David Bradley - Argus Filch
Apple Brook - Wilhelmina Grubbly-Plank
Shefali Chowdhury - Parvati Patil
Warwick Davis - Filius Flitwick
Alfred Enoch - Dean Thomas
Tom Felton - Draco Malfoy
Robert Hardy - Cornelius Fudge
George Harris - Kingsley Shacklebolt
Joshua Herdman - Gregory Goyle
Alec Hopkins - Young Severus Snape
Charles Hughes - Young Peter Pettigrew
Kathryn Hunter - Mrs. Arabella Figg
Robbie Jarvis - Young James Potter
Richard Leaf - Auror Dawlish
Katie Leung - Cho Chang
Matthew Lewis - Neville Longbottom
Evanna Lynch - Luna Lovegood
Richard Macklin - Malcolm
Tony Maudsley - Grawp (voice)
Jim McManus - Aberforth Dumbledore
Harry Melling - Dudley Dursley
Devon Murray - Seamus Finnigan
James Phelps - Fred Weasley
Oliver Phelps - George Weasley
Jason Piper - Bane
Chris Rankin - Percy Weasley
Nick Shim - Zacharias Smith
Susie Shinner - Young Lily Potter
James Utechin - Young Remus Lupin
James Walters - Young Sirius Black
Jamie Waylett - Vincent Crabbe
Michael Wildman - Magorian
Bonnie Wright - Ginny Weasley

Directed By
David Yates

Screenplay By
Michael Goldenberg

Producers
David Barron
David Heyman
Tanya Seghatchian

Casting By
Fiona Weir

Cinematogrophy
Slawomir Idziak

Production Design
Stuart Craig

Art Direction
Andrew Ackland-Snow
Mark Bartholomew
Alastair Bullock

Costume Design
Jany Temime

Film Editing
Mark Day

Original Music By
Nicholas Hooper
John Williams (Main Theme)