New Harry Potter Cast for HBO TV Series – Full List

The original Harry Potter films launched Daniel Radcliffe from an eleven-year-old with wild hair into a household name. Now HBO is betting that a new generation of fresh faces can win over an audience that still has those movies memorized. The streaming service has been quietly assembling what it calls one of the largest productions in its history, and as of early 2026, the cast is largely in place. Here’s a clear-eyed look at who’s playing who, how they got the roles, and what questions remain unanswered before Christmas 2026.

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

Who has been cast in the new Harry Potter?

HBO has confirmed the core cast for its Harry Potter television series, drawing from both seasoned character actors and relative newcomers discovered through an exhaustive casting search. The production describes the project as one of the largest in the platform’s history, with each book in J.K. Rowling’s series eventually receiving its own dedicated season across an approximately ten-year run.

The table below consolidates the confirmed cast details for the leading roles.

Main trio

The three lead roles went to young actors selected from a pool of 40,000 applicants after a casting process that lasted over a year. Dominic McLaughlin, previously known for the series Grow, takes on the role of the Boy Who Lived. Arabella Stanton, known for her work in the musical Matilda, plays Hermione Granger—she was also cast separately as the voice of a younger Hermione in upcoming audiobook adaptations of the first three books. Alastair Stout rounds out the trio as Ron Weasley, a role that marks his highest-profile casting to date.

Supporting roles

The production has assembled a strong ensemble of established names for the adult roles. John Lithgow plays Albus Dumbledore, bringing the kind of screen gravitas that HBO clearly hopes will reassure fans who remember Richard Harris and Michael Gambon in the films. Janet McTeer takes on Minerva McGonagall, while Nick Frost—best known for Shaun of the Dead and Hot Fuzz—plays Rubeus Hagrid. The creative team has also brought back Warwick Davis to reprise his role as Filius Flitwick from the original film series.

Additional announcements

Several supporting roles have been filled as production progresses. Luke Thallon and Paul Whitehouse joined the cast in April 2025 as Quirinus Quirrell and Argus Filch respectively. Lambert Wilson and Marthe Keller came on board in October 2025 to play Nicolas Flamel and Perenelle Flamel. Casting announcements for Hogwarts students began rolling out in March 2026, filling out the background of the school that viewers last saw on screen more than a decade ago.

Who is the next Harry Potter actor?

Dominic McLaughlin is the actor HBO has chosen to carry the weight of the most recognizable boy wizard in fiction. The casting was announced in May 2025, alongside Alastair Stout and Arabella Stanton, after a search that began with a casting call issued in September 2024. McLaughlin’s prior credit in Grow gave him some on-screen experience, but he faces a task unlike almost any other in television: stepping into a character whose face the world already knows, played by an actor who became a star in that same role.

Dominic McLaughlin background

McLaughlin was selected from the same pool of approximately 40,000 actors that the trio came from. The casting team ran what HBO described as one of the most extensive searches for young talent in recent memory, drawing more than 32,000 children to audition for the main roles. McLaughlin’s casting as Harry specifically required not just acting ability but the particular mix of vulnerability and resolve that the character demands at the start of The Philosopher’s Stone.

Comparison to Daniel Radcliffe

Daniel Radcliffe has not been involved in the new series, which marks a complete reboot with an entirely new cast. Reports suggest he has expressed public reservations about the project, though he has not spoken publicly in detail about his objections. Unlike some legacy franchise reboots where original actors return in cameos or mentoring roles, HBO has built this production entirely around a fresh ensemble. Radcliffe’s distance from the project stands in contrast to Warwick Davis’s return as Flitwick—the one direct thread connecting the original films to this adaptation.

Who plays the new Hermione Granger?

Arabella Stanton landed the role of Hermione Granger, one of the most beloved characters in modern fiction, through the same casting process that found Dominic McLaughlin and Alastair Stout. Her background includes the stage production of Matilda, giving her experience in demanding, high-profile work before taking on the witch who readers first meet on the Hogwarts Express.

Arabella Stanton details

Stanton was confirmed in the May 2025 announcement alongside McLaughlin and Stout. The role required an actor who could credibly portray Hermione’s sharp intelligence and moral certainty, traits that Emma Watson turned into a defining feature of the films over ten years and eight movies. HBO’s approach gives Stanton the chance to explore the character with a depth that the film’s runtime did not always allow—each of the eight planned episodes is expected to give the trio room to breathe that the original films compressed into highlights.

Beyond the television role

Stanton has also been cast as the voice of a younger Hermione Granger in the upcoming audiobook adaptations of the first three books, a detail that reinforces how thoroughly the production team has committed to her casting. This is a dual investment in one actor across both screen and audio formats, suggesting the production sees her as central to how audiences experience the character across media.

The implication: Stanton’s dual casting signals that HBO is building her into a long-term asset across multiple Harry Potter media, not just the television series.

Is the Snape casting confirmed?

Yes. Paapa Essiedu has been cast as Severus Snape, a role immortalized on screen by Alan Rickman in the original films. The casting was confirmed across multiple sources including Wikipedia and the production’s own announcements, and Essiedu appeared in the first official look at the cast released to the public.

Paapa Essiedu as Severus Snape

Essiedu is a British theatre actor whose casting generated significant public discussion from the moment it was announced. The books describe Snape as pale-skinned, a detail that has prompted debate about racial representation choices in the adaptation. The creative team has defended Essiedu’s casting as a bold and considered interpretation, a framing that positions the production’s artistic vision as taking precedence over strict physical descriptions from the source material.

First look details

The first-look images showed Essiedu in costume, signaling that production was moving forward with the Snape role firmly in place despite public commentary. For audiences, the question now is not whether Essiedu will play Snape—he will—but how his interpretation will compare to Rickman’s iconic version, which shaped how millions of readers imagined the character for years before the films existed.

What else is known about the new Harry Potter HBO cast?

Beyond the headline names, HBO has confirmed additional casting that fills out the world viewers will recognize from the books. The production is building toward a December 25, 2026 premiere in the United States on HBO and globally on HBO Max, with filming underway at the same Warner Bros. Leavesden Studios in Hertfordshire, England where the original films were shot.

Dumbledore and others

John Lithgow’s casting as Dumbledore brings in an actor with extensive dramatic credentials, including recent work in films like Conclave and the series The Crown. The production clearly aimed for prestige alongside discovery—pairing three relatively unknown young leads with actors who bring established credibility to the adult roles. Janet McTeer, Nick Frost, and the returning Warwick Davis serve similar purposes: reassuring audiences that the world is in capable hands while giving the younger cast members experienced scene partners.

Unconfirmed roles like Voldemort and Draco

Several key roles have not yet been cast or announced. Voldemort, Draco Malfoy, and Lucius Malfoy remain unconfirmed despite significant audience interest in who will fill these positions. The production has moved methodically, announcing cast members in waves rather than dumping the full ensemble at once. Whether Voldemort appears in Season 1—which adapts only The Philosopher’s Stone—remains an open question, given that the Dark Lord barely features in the first book’s events. Draco’s role would similarly depend on whether the story reaches the events of later books in the first season or beyond.

Related reading: HBO Harry Potter Series 2026: Confirmed Cast and Production Details · HBO Harry Potter Television Series Confirms Casting of Hogwarts Students

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