Harry Potter HBO Cast: Characters, New Actors and Who Plays Who

HBO’s Harry Potter television series has a new cast led by Dominic McLaughlin as Harry Potter, Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley. The first season is officially titled Harry Potter and the Philosopher’s Stone, will run for eight episodes and is scheduled to debut at Christmas 2026 on HBO and HBO Max where available.

The project is a new adaptation of J.K. Rowling’s books rather than a continuation of the Daniel Radcliffe films. That means viewers will see new performers playing Harry, Hermione, Ron, Dumbledore, Snape, Hagrid, Draco Malfoy and other familiar characters.

For another Wizarding World casting story on the site, see our Kit Harington and Gilderoy Lockhart guide.

Harry Potter HBO cast and characters

Dominic McLaughlin as Harry Potter

Dominic McLaughlin takes the central role of Harry Potter. Season 1 begins again with Harry living with the Dursleys before a Hogwarts letter reveals that the ordinary life he has been told to accept is not his real story.

The television format gives HBO more time to spend on the early relationships and school details that a feature film has to compress. McLaughlin will therefore be carrying not only the franchise name but a version of Harry designed for a longer-form adaptation.

Arabella Stanton as Hermione Granger

Arabella Stanton plays Hermione Granger, the highly prepared first-year student who eventually becomes one of Harry’s closest friends. Hermione is essential to both the emotional and problem-solving structure of the first book, so the eight-episode format should give the character room to develop beyond a few major scenes.

Alastair Stout as Ron Weasley

Alastair Stout plays Ron Weasley. Ron introduces Harry to the Weasley family and becomes the third member of the core friendship. Several Weasley relatives have also been cast, including Katherine Parkinson as Molly, Tristan Harland as Fred, Gabriel Harland as George, Ruari Spooner as Percy and Gracie Cochrane as Ginny.

John Lithgow as Albus Dumbledore

John Lithgow plays Hogwarts headmaster Albus Dumbledore. The character has long-term importance across the entire story, so this casting choice reaches far beyond Season 1. Dumbledore begins as a distant authority figure but gradually becomes one of the most important adults in Harry’s life.

Paapa Essiedu as Severus Snape

Paapa Essiedu plays Professor Severus Snape. Snape’s early hostility toward Harry is one of the first season’s major mysteries, but the character becomes much more complicated as the story continues.

Because Snape’s smallest expressions and decisions gain new meaning later, the role will be watched closely by both book readers and viewers who know Alan Rickman’s film performance.

Nick Frost as Rubeus Hagrid

Nick Frost plays Rubeus Hagrid. Hagrid is the character who physically enters Harry’s old life and tells him the truth about who he is. He also becomes one of Harry’s most dependable adult allies at Hogwarts.

Lox Pratt as Draco Malfoy

Lox Pratt plays Draco Malfoy, Harry’s school rival. Draco’s early behavior introduces the class prejudice and family hierarchy that exist inside the wizarding world. Johnny Flynn plays Draco’s father, Lucius Malfoy.

Warwick Davis as Filius Flitwick

Warwick Davis returns as Professor Filius Flitwick, making him a notable link between the HBO adaptation and the earlier film series. HBO specifically announced his return to the role he previously played on screen.

Full confirmed Harry Potter HBO cast

• Dominic McLaughlin as Harry Potter
• Arabella Stanton as Hermione Granger
• Alastair Stout as Ron Weasley
• John Lithgow as Albus Dumbledore
• Janet McTeer as Minerva McGonagall
• Paapa Essiedu as Severus Snape
• Nick Frost as Rubeus Hagrid
• Rory Wilmot as Neville Longbottom
• Lox Pratt as Draco Malfoy
• Leo Earley as Seamus Finnigan
• Elijah Oshin as Dean Thomas
• Tristan Harland as Fred Weasley
• Gabriel Harland as George Weasley
• Ruari Spooner as Percy Weasley
• Alessia Leoni as Parvati Patil
• Sienna Moosah as Lavender Brown
• Finn Stephens as Vincent Crabbe
• William Nash as Gregory Goyle
• Warwick Davis as Filius Flitwick
• Sirine Saba as Pomona Sprout
• Daniel Rigby as Vernon Dursley
• Bel Powley as Petunia Dursley
• Paul Whitehouse as Argus Filch
• Johnny Flynn as Lucius Malfoy
• Bertie Carvel as Cornelius Fudge
• Luke Thallon as Quirinus Quirrell
• Katherine Parkinson as Molly Weasley
• Amos Kitson as Dudley Dursley
• Gracie Cochrane as Ginny Weasley
• Richard Durden as Cuthbert Binns
• Louise Brealey as Rolanda Hooch
• Bríd Brennan as Poppy Pomfrey
• Leigh Gill as Griphook
• Anton Lesser as Garrick Ollivander

When does the Harry Potter HBO series come out?

HBO says Harry Potter and the Philosopher’s Stone will debut at Christmas 2026. The first season will have eight episodes and will air on HBO, with streaming on HBO Max where the service is available.

This is more specific than the earlier 2027 language attached to the project. HBO’s March 25, 2026 teaser announcement officially moved the launch to Christmas 2026.

Is the HBO series a remake of the Harry Potter movies?

It is better described as a new adaptation of the books. The series starts the story again with a different cast and a television structure. It is not Season 9 of the film continuity, and Dominic McLaughlin’s Harry is not an older version of Daniel Radcliffe’s character.

HBO has repeatedly described the project as a faithful adaptation of the books. The longer episode format should allow the show to include characters, school routines and story details that were condensed or omitted from the films.

Who is playing Voldemort?

HBO’s principal Season 1 cast announcement does not identify the actor playing Lord Voldemort. Until HBO formally announces that role, casting claims should be treated as unconfirmed.

That is important for SEO coverage too. A single maintained cast pillar is more useful than creating thin pages around rumors that may change before broadcast.

Who is making the Harry Potter HBO series?

Francesca Gardiner is the writer, showrunner and executive producer. Mark Mylod will executive produce and direct multiple episodes. The production is associated with Brontë Film and TV and Warner Bros. Television, with David Heyman also among the executive producers.

Why this cast page should be treated as a pillar

The Harry Potter television adaptation is designed as a multi-season project, which means cast searches will continue changing as later books introduce more characters. Maintaining one strong, frequently updated cast guide helps avoid cannibalization between dozens of thin announcement pages.

Readers interested in other major fantasy adaptations can also explore our Enola Holmes 3 cast and story guide or A Knight of the Seven Kingdoms episode guide.