Harry Potter HBO Cast: Full Guide to Actors and Characters

After years of fan speculation and a casting call that drew 40,000 hopefuls, the Hogwarts trio finally has faces again. Dominic McLaughlin, Arabella Stanton, and Alastair Stout will step into Harry, Hermione, and Ron’s robes when HBO’s Harry Potter series debuts on December 25, 2026. The project brings fresh talent alongside returning veterans—and a few production quirks that are already making headlines.

Harry Potter: Dominic McLaughlin · Hermione Granger: Arabella Stanton · Ron Weasley: Alastair Stout · Albus Dumbledore: John Lithgow · Severus Snape: Paapa Essiedu

Who will play Harry Potter in the new HBO series?

Dominic McLaughlin as Harry Potter

Dominic McLaughlin won the role of Harry Potter after what casting directors Lucy Bevan and Emily Brockmann described as an “extraordinary search” through 40,000 candidates, per the official announcement on HarryPotter.com. The casting call for main roles went out in September 2024, and the trio was revealed in May 2025. McLaughlin has already been photographed in full Quidditch robes as the Gryffindor Seeker during filming at Leavesden Studios, where principal photography began in July 2025, according to Wikipedia.

Who is the new cast of the Harry Potter series?

Main trio

The three leads were announced together in a joint statement from showrunner Francesca Gardiner and director Mark Mylod. “After an extraordinary search led by casting directors Lucy Bevan and Emily Brockmann, we are delighted to announce we have found our Harry, Hermione, and Ron,” the producers said per the official HarryPotter.com release. Arabella Stanton plays Hermione Granger, while Alastair Stout takes on Ron Weasley. The announcement marked the end of months of fan speculation about who would inherit the roles made iconic by Daniel Radcliffe, Emma Watson, and Rupert Grint.

Professors and staff

John Lithgow takes the reins as Albus Dumbledore, announced alongside the other adult cast members in April 2025 via Warner Bros. Discovery’s official press release. Janet McTeer plays Minerva McGonagall, and Paapa Essiedu was cast as Severus Snape—the role Alan Rickman made famous across eight films. Nick Frost, known for comedies like Shaun of the Dead, was surprisingly cast as Rubeus Hagrid, a departure from the gentle giant’s usual casting type. The adult cast also includes Luke Thallon as Quirinus Quirrell and Paul Whitehouse as Argus Filch.

Supporting roles

Warwick Davis returns to the franchise as Professor Flitwick, the only actor from the original films confirmed for the reboot so far, per HBO’s YouTube announcement. Additional supporting cast confirmed via HarryPotter.com includes Sirine Saba as Professor Pomona Sprout, Richard Durden as Professor Cuthbert Binns, and Bríd Brennan as Madam Poppy Pomfrey. Leigh Gill was cast as Griphook, the Gringotts goblin banker. A wave of student castings announced in March 2026 filled out the Hogwarts population, including Orson Matthews as Quidditch captain Oliver Wood and Asha Soetan as Angelina Johnson.

“We are happy to announce the casting of John Lithgow, Janet McTeer, Paapa Essiedu, Nick Frost, Luke Thallon and Paul Whitehouse to play Dumbledore, McGonagall, Snape, Hagrid, Quirrell and Filch.”

— Francesca Gardiner and Mark Mylod, Showrunner/Executive Producer and Director/Executive Producer (Warner Bros. Discovery Press)

Who’s playing Voldemort in the HBO Harry Potter series?

Ralph Fiennes potential reprise

The question of who will play Lord Voldemort remains one of the series’ biggest unknowns. Ralph Fiennes, who portrayed the dark lord across multiple films, has publicly discussed the possibility of returning to the role. However, no official casting announcement has been made, and representatives for HBO have not confirmed Fiennes’ involvement. The ambiguity leaves open whether the series will recast the role or pursue a different approach for the villain’s on-screen presence.

Who is playing Draco Malfoy in the HBO series?

Lox Pratt as Draco Malfoy

Lox Pratt was announced for the role of Draco Malfoy, bringing the iconic Slytherin antagonist into the new series. The character, made famous by Tom Felton in the film series, represents one of the most anticipated recastings for longtime fans. Pratt’s casting joins a roster that has already confirmed several key Hogwarts students through announcements on HarryPotter.com.

Who is playing Snape in Harry Potter HBO?

Paapa Essiedu as Severus Snape

Paapa Essiedu was officially cast as Severus Snape and confirmed via Warner Bros. Discovery’s April 2025 press release. During filming, Esquire UK reported that Essiedu experienced a memorable on-set incident, falling off his broomstick while filming Quidditch scenes. The anecdote, shared by Esquire UK, gave fans an early glimpse behind the curtain of the production. Essiedu faces the formidable task of stepping into a role Alan Rickman defined across a decade of films, though the HBO series’ longer runtime may allow for a more nuanced exploration of Snape’s backstory from J.K. Rowling’s books.

“After an extraordinary search led by casting directors Lucy Bevan and Emily Brockmann, we are delighted to announce we have found our Harry, Hermione, and Ron.”

— Francesca Gardiner and Mark Mylod, Showrunner/Executive Producer and Director/Executive Producer (HarryPotter.com announcement)

Production Timeline

The HBO Harry Potter series has moved quickly through its casting and production phases:

The production’s speed—from casting call to principal photography in under a year—reflects HBO’s commitment to rapid development. The first season adapts Harry Potter and the Philosopher’s Stone across 8 episodes, a significant expansion from the single film’s runtime.

Confirmed Facts vs. Rumors

Related reading: Cast of Tropic Thunder

This full guide highlights Dominic McLaughlin as Harry and others, while the 2026 premiere cast details reveals timeline and ensemble expansions for the HBO adaptation.

Frequently asked questions