 | Daniel Radcliffe als Harry Potter |
 | Rupert Grint als Ron Weasley |
 | Emma Watson als Hermione Granger |
 | Jim Broadbent als Horace Slughorn |
 | Michael Gambon als Albus Dumbledore |
 | Tom Felton als Draco Malfoy |
 | Alan Rickman als Severus Snape |
 | Bonnie Wright als Ginny Weasley |
 | Jessie Cave als Lavender Brown |
 | Evanna Lynch als Luna Lovegood |
 | Freddie Stroma als Cormac McLaggen |
 | Robbie Coltrane als Rubeus Hagrid |
 | Helena Bonham Carter als Bellatrix Lestrange |
 | Maggie Smith als Minerva McGonagall |
 | Timothy Spall als Peter Pettigrew |
 | David Thewlis als Remus Lupin |
 | Julie Walters als Molly Weasley |
 | David Bradley als Argus Filch |
 | Warwick Davis als Filius Flitwick |
 | Gemma Jones als Poppy Pomfrey |
 | Helen McCrory als Narcissa Malfoy |
 | Natalia Tena als Nymphadora Tonks |
 | Mark Williams als Arthur Weasley |
 | Dave Legeno als Fenrir Greyback |
 | Elarica Johnson als Waitress |
 | Geraldine Somerville als Lily Potter |
 | Oliver Phelps als George Weasley |
 | James Phelps als Fred Weasley |
 | Alfred Enoch als Dean Thomas |
 | Robert Knox als Marcus Belby |
| Amber Evans als Twin Girl 1 |
| Ruby Evans als Twin Girl 2 |
 | Louis Cordice als Blaise Zabini |
 | Scarlett Hefner als Pansy Parkinson |
 | Jamie Waylett als Vincent Crabbe |
 | Josh Herdman als Gregory Goyle |
 | Matthew Lewis als Neville Longbottom |
 | William Melling als Nigel Wolpert |
 | Anna Shaffer als Romilda Vane |
 | Devon Murray als Seamus Finnigan |
 | Georgina Leonidas als Katie Bell |
 | Isabella Laughland als Leanne |
 | Afshan Azad als Padma Patil |
 | Shefali Chowdhury als Parvati Patil |
 | Amelda Brown als Mrs Cole |
 | Hero Fiennes Tiffin als Tom Riddle (11 Years) |
| Jack Pryor als Skinny Kid |
| Mark Lockyer als Waiter |
 | Paul Ritter als Eldred Worple |
 | Frank Dillane als Tom Riddle (16 Years) |
| Joerg Stadler als Male Inferi |
 | Caroline Wildi als Female Inferi |
 | Ralph Ineson als Amycus Carrow |
| Suzie Toase als Alecto Carrow |
 | Rod Hunt als Thorfinn Rowle |
 | Katie Leung als Cho Chang |
 | Nathan Clarke als Gryffindor Student (uncredited) |
 | Olivia Jewson als Slug Club Party Member (uncredited) |
| Freddie Rose als Year 7 Schoolboy (uncredited) |
 | Jason Isaacs als Lucius Malfoy (uncredited) |
| Stuart Craig | Production Design |
| Jany Temime | Costume Design |
| David Barron | Producer |
| Stephenie McMillan | Set Decoration |
| Mark Day | Editor |
| David Yates | Director |
| J.K. Rowling | Novel |
| Lionel Wigram | Executive Producer |
| Fiona Weir | Casting |
| Steve Kloves | Screenplay |
| Bruno Delbonnel | Director of Photography |
| David Heyman | Producer |
| Gary Tomkins | Art Direction |
| Hattie Storey | Art Direction |
| Alastair Bullock | Art Direction |
| Molly Hughes | Art Direction |
| Tino Schaedler | Art Direction |
| Sloane U'Ren | Art Direction |
| Jaap Buitendijk | Still Photographer |
| Anna Worley | Script Supervisor |
| Kate Baird | First Assistant Editor |
| Hermione Byrt | First Assistant Editor |
| Stuart Wilson | Production Sound Mixer |
| Nicholas Hooper | Original Music Composer |
| Richard Davies | Assistant Costume Designer |
| Tim Burke | Visual Effects Supervisor |
| John Moffatt | Visual Effects Supervisor |
| John Richardson | Special Effects Supervisor |
| Tim Alexander | Visual Effects Supervisor |
| Nicolas Aithadi | Visual Effects Supervisor |
| John Trehy | Co-Producer |
| Tim Lewis | Associate Producer |
| Tim Lewis | Unit Production Manager |
| Stephen Woolfenden | Second Unit Director |
| Jamie Christopher | First Assistant Director |
| Simon Emanuel | Production Manager |
| Russell Lodge | Production Manager |
| Nick Dudman | Makeup Designer |
| Emma Norton | Visual Effects Producer |
| Chris Shaw | Visual Effects Supervisor |
| Neil Lamont | Supervising Art Director |
| James Mather | Supervising Sound Editor |
| Greg Powell | Stunt Coordinator |
| Andrew Ackland-Snow | Supervising Art Director |
| Martin Foley | Art Direction |
| Rosie Goodwin | Set Decoration |
| Dominic Gibbs | Sound Effects Editor |
| Michael Fentum | Sound Effects Editor |
| Andy Kennedy | Sound Effects Editor |
| Jed Loughran | Sound Effects Editor |
| Jamie McPhee | Sound Editor |
| Stuart Hilliker | Sound Re-Recording Mixer |
| Mike Dowson | Sound Re-Recording Mixer |
| Charlotte Finlay | Costume Supervisor |
| Vivienne Jones | Assistant Costume Designer |
| Rupert Steggle | Assistant Costume Designer |
| Aimee Lisby | Assistant Costume Designer |
| Amanda Knight | Makeup Designer |
| Amanda Burns | Makeup Artist |
| Belinda Hodgson | Makeup Artist |
| Sharon Nicholas | Makeup Artist |
| Lisa Tomblin | Hair Designer |
| Paul Spateri | Prosthetic Makeup Artist |
| Mark Coulier | Prosthetic Makeup Artist |
| Jill Brooks | Visual Effects Producer |
| Gretchen Libby | Visual Effects Producer |
| Oliver Money | Visual Effects Producer |
| Paul J. Franklin | Visual Effects Supervisor |
| Paul Riddle | Visual Effects Supervisor |
| Dominic Sidoli | Visual Effects Producer |
| Gregory Yepes | Visual Effects Supervisor |
| Charlotte Loughnane | Visual Effects Producer |
| Chloe Grysole | Visual Effects Producer |
| Donna Williams | Stunts |
| Alisha Smith | Stunt Double |
| Gabrielle Fritz | Stunt Double |
| Elaine Ford | Stunts |
| Joanna Whitney | Stunt Double |
| Joanna Whitney | Stunts |
| Helen Steinway Bailey | Stunts |
| Gemma Powley | Stunts |
| Tilly Powell | Stunts |
| Tina Maskell | Stunts |
| Charlotte Hunter | Stunt Double |
| Jade Gordon | Stunts |
| Sarah Franzl | Stunts |
| Amanda Foster | Stunts |
| Nina Armstrong | Stunts |
| Lucy Allen | Stunts |
| Peter Gleaves | ADR Mixer |
| Peter Burgis | Foley Artist |
| Andie Derrick | Foley Artist |
| Ed Colyer | Foley Mixer |
| Glen Gathard | Foley Mixer |
| Robert Edwards | ADR Recordist |
| Antony Bayman | ADR Recordist |
| Chris Lyons | Special Effects Makeup Artist |
| Sarah Weatherburn | Hairstylist |
| Charlotte Rogers | Makeup Artist |
| Shaune Harrison | Prosthetic Makeup Artist |
| Paula Eden | Prosthetic Makeup Artist |
| David Holmes | Stunt Double |
| Tolga Kenan | Stunts |
| Marc Mailley | Stunts |
| Rob Bliss | Concept Artist |
| Ferran Domenech | Animation Supervisor |
| Matthew Sharp | Assistant Director |
