Everything We Know About HBO’s New Harry Potter Series

TL;DR

• HBO’s new Harry Potter television series premieres during Christmas 2026 on HBO and HBO Max.
• The eight-episode first season is officially titled Harry Potter and the Philosopher’s Stone.
• Dominic McLaughlin stars as Harry Potter, with Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley.
• John Lithgow plays Albus Dumbledore, Janet McTeer is Minerva McGonagall, Paapa Essiedu is Severus Snape and Nick Frost plays Rubeus Hagrid.
• The series is designed as a more detailed adaptation of the original novels rather than a continuation of the eight Harry Potter films.
• Francesca Gardiner serves as showrunner, while Succession and Game of Thrones veteran Mark Mylod directs multiple episodes.
• Hans Zimmer and Bleeding Fingers Music are creating a new score for the series.
• Season 2, based on Harry Potter and the Chamber of Secrets, is already moving forward and will begin production in fall 2026.
• The television format will restore characters, locations and story moments that never appeared in the original films, including Peeves the Poltergeist.

More than 25 years after audiences first watched Harry Potter walk into Hogwarts, Warner Bros. is preparing to tell the entire story again.

This time, however, Harry isn’t returning in another movie.

HBO is rebuilding the Wizarding World as a long-form television series designed to adapt J.K. Rowling’s seven original Harry Potter novels with considerably more time than the films ever had available.

What initially sounded like a project years away is now much closer. HBO has released multiple trailers, the new Hogwarts is built, the cast is enormous, production on the first season is well underway and work is already beginning on Season 2.

We also finally know when audiences will get to see it.

Here’s everything currently confirmed about HBO’s new Harry Potter series.

When Does The New Harry Potter Series Premiere?

HBO has officially announced that Harry Potter will premiere during Christmas 2026.

The series will air on HBO in the United States and stream through HBO Max in territories where the service is available.

That makes the new series one of Warner Bros. Discovery’s biggest releases of the holiday season and brings Harry back to screens almost exactly 25 years after Harry Potter and the Sorcerer’s Stone introduced the Wizarding World to movie audiences.

The first season will contain eight episodes.

HBO hasn’t yet revealed the full episode-release schedule, so it remains unclear whether episodes will arrive weekly or whether Christmas will launch more than one chapter at once.

Season 1 Is Officially Called Harry Potter And The Philosopher’s Stone

HBO isn’t simply calling the first installment Harry Potter Season 1.

The first season is officially titled Harry Potter and the Philosopher’s Stone, directly matching the original British title of J.K. Rowling’s first novel.

That title reinforces exactly what HBO is trying to accomplish.

This isn’t a sequel to Daniel Radcliffe’s movies, an alternate-universe continuation or a story taking place somewhere else in the Wizarding World.

It’s another adaptation of the books.

Harry will once again begin as an 11-year-old living with the Dursleys before discovering that he’s a wizard, traveling to Hogwarts and uncovering the mystery surrounding the Philosopher’s Stone.

HBO Has Eight Hours To Adapt The First Book

The biggest difference between the television series and the original movies is time.

Executive producer and director Mark Mylod previously revealed that the creative team has roughly eight hours to tell the story of the first novel.

Chris Columbus’ original 2001 movie runs a little over two and a half hours.

Giving HBO several additional hours means the new adaptation doesn’t have to make the same choices about what stays and what gets removed.

That doesn’t automatically mean every paragraph from Rowling’s novel will appear on screen, but it gives the creative team far more room for Hogwarts classes, secondary students, teachers, Quidditch, Harry’s childhood and smaller pieces of Wizarding World mythology.

Who Is Playing Harry Potter?

Dominic McLaughlin is the new Harry Potter.

The young Scottish actor landed one of the most recognizable roles in modern popular culture following an enormous open casting search.

HBO received tens of thousands of auditions while looking for the three children who would become the new Harry, Ron and Hermione.

McLaughlin has already appeared in promotional images wearing Harry’s unmistakable round glasses and Hogwarts robes, while the trailers have given audiences their first substantial look at his version of the Boy Who Lived.

The challenge is enormous.

Daniel Radcliffe played Harry across eight movies and effectively grew up with the character. McLaughlin could now potentially spend much of the next decade doing the same thing.

Who Is Playing Ron And Hermione?

Alastair Stout plays Ron Weasley, while Arabella Stanton takes over as Hermione Granger.

Like McLaughlin, both actors came through HBO’s massive casting process rather than being established child stars audiences already strongly associate with other roles.

The new trailers show the three together at Hogwarts, giving fans their first opportunity to see the chemistry that will need to carry the entire series.

It’s difficult to overstate how important that chemistry is.

The magic, monsters and villains may provide the spectacle, but Harry Potter ultimately works because of the friendship between Harry, Ron and Hermione.

If audiences believe in those three, HBO has the foundation it needs for everything that comes later.

John Lithgow Is The New Albus Dumbledore

HBO went considerably more established when casting its Hogwarts professors.

Six-time Emmy winner John Lithgow plays Hogwarts headmaster Albus Dumbledore.

Lithgow follows Richard Harris and Michael Gambon, who played Dumbledore during the original film series.

The character begins the story as the seemingly eccentric headmaster watching Harry’s first steps into the magical world, but anyone familiar with the novels knows Dumbledore becomes increasingly important as Voldemort’s return moves closer.

That makes Lithgow one of the adult cast members HBO will need to keep around for years.

Paapa Essiedu Is Severus Snape

Paapa Essiedu takes on Severus Snape, following Alan Rickman’s defining performance in the movies.

Rather than attempting to recreate Rickman’s interpretation, the television series appears interested in bringing Snape closer to his canonical age.

The creative team has specifically pointed out that Snape is only around 31 when Harry begins Hogwarts in 1991.

That matters because Snape, James Potter, Lily Potter, Sirius Black and Remus Lupin all belong to roughly the same generation.

A long-form adaptation gives HBO an opportunity to make those relationships—and the history behind them—considerably clearer once later seasons reach that material.

Janet McTeer Is Professor McGonagall

Janet McTeer plays Minerva McGonagall, Hogwarts’ Deputy Headmistress, Transfiguration professor and head of Gryffindor House.

Maggie Smith made McGonagall one of the most beloved characters in the films, so McTeer inherits another role that audiences already know extremely well.

The television format should also allow McGonagall to appear more regularly.

The books contain plenty of small interactions involving Hogwarts professors that couldn’t reasonably fit inside the movies, and those moments helped make the school feel like an actual institution rather than simply a backdrop for Harry’s adventures.

Nick Frost Is Hagrid

Nick Frost plays Rubeus Hagrid.

The casting immediately suggests HBO isn’t abandoning the warmth and humor that made Robbie Coltrane’s Hagrid such an essential part of the films.

Hagrid is the person who physically removes Harry from his miserable Muggle existence and introduces him to the magical world.

He’s also one of Harry’s earliest genuine friends.

Frost’s mixture of comedy and sincerity makes him an intriguing choice for a character who can introduce a three-headed dog as though keeping one inside a school is perfectly reasonable.

The Rest Of The Hogwarts Staff Is Filling Out

HBO has already announced a large collection of additional Hogwarts staff.

• Luke Thallon as Professor Quirinus Quirrell
• Warwick Davis as Professor Filius Flitwick
• Sirine Saba as Professor Pomona Sprout
• Richard Durden as Professor Cuthbert Binns
• Louise Brealey as Madam Rolanda Hooch
• Bríd Brennan as Madam Poppy Pomfrey
• Paul Whitehouse as Argus Filch

Warwick Davis represents an especially interesting connection to the original movies because he previously played Professor Flitwick in the film series.

Most roles are being completely recast for the new generation, making Davis one of the rare performers crossing directly between the two adaptations.

Peeves Is Finally Going To Be In Harry Potter

One of the strongest examples of the television series restoring material left out of the films is Peeves.

Peter Serafinowicz has been cast as Hogwarts’ resident poltergeist.

Peeves appears throughout the novels, terrorizing students, insulting teachers and generally creating chaos anywhere he can find it.

Rik Mayall actually filmed Peeves material for the original Philosopher’s Stone movie, but the character was ultimately removed and never appeared during the eight-film series.

HBO is finally changing that.

For longtime book readers, Peeves may be the clearest early indication that “more faithful” isn’t simply marketing language.

Draco Malfoy And His Family Have Been Cast

Lox Pratt plays Draco Malfoy, the Slytherin student who quickly establishes himself as Harry’s school rival.

Johnny Flynn plays Draco’s father, Lucius Malfoy.

Lucius only has a limited presence during the first story but becomes considerably more important beginning with Chamber of Secrets.

Draco’s familiar Slytherin companions are already in place as well, with Finn Stephens playing Vincent Crabbe and William Nash playing Gregory Goyle.

Laila Barwick has also been cast as Pansy Parkinson.

The Weasley Family Is Growing

Katherine Parkinson plays Molly Weasley, taking over the role made famous by Julie Walters.

The younger Weasleys currently include:

• Alastair Stout as Ron Weasley
• Tristan Harland as Fred Weasley
• Gabriel Harland as George Weasley
• Ruari Spooner as Percy Weasley
• Gracie Cochrane as Ginny Weasley

The Weasleys become one of the most important families in the entire saga, so this is another group of actors who could potentially remain with the project for years.

Ginny in particular should benefit enormously from the longer format. The films dramatically reduced much of her characterization and several of the smaller moments that establish her personality before her relationship with Harry becomes important.

The Dursleys Have Been Recast

Harry’s unpleasant Muggle relatives also have new faces.

Bel Powley plays Petunia Dursley, Daniel Rigby is Vernon Dursley and Amos Kitson plays Dudley.

The first trailer spends noticeably more time establishing Harry’s miserable life before Hogwarts than the films were able to devote to it.

We even see Harry attending Muggle school.

That material is referenced in Rowling’s novel but wasn’t explored on screen in the original movie.

The Series Is Expanding Harry’s Life Before Hogwarts

One of the most revealing moments from HBO’s trailers has almost nothing to do with magic.

Harry is shown in his oversized school uniform being chased by Dudley and other children at his Muggle school.

The scene expands material that was only described in the book, including the bullying Harry endured before discovering who he really was.

It’s exactly the type of thing an eight-hour adaptation can afford to dramatize.

The original film needed to get Harry to Hogwarts relatively quickly. The series can spend more time making audiences understand why Hogwarts feels like the first real home he has ever had.

The Story Is Staying In The 1990s

HBO isn’t updating Harry Potter to the present day.

The series remains rooted in the original book timeline, meaning Harry begins his first year at Hogwarts in 1991.

The trailers deliberately lean into the period.

Muggle clothing, hairstyles, public transportation and even Aunt Petunia’s oversized glasses reinforce the early-’90s setting.

That’s a smart decision because modernizing the story would create countless complications.

Smartphones alone would completely change Harry’s experience growing up with the Dursleys.

Hogwarts Is Being Redesigned

Anyone expecting HBO to simply reuse the movie version of Hogwarts is going to notice differences immediately.

The television series is building its own visual identity.

The Great Hall and other iconic spaces remain recognizable in spirit, but the creative team has approached Hogwarts as though it were a real castle that evolved architecturally across centuries.

Mylod has discussed incorporating different architectural periods and expanding portions of the school audiences never properly explored in the movies.

That includes areas as simple as the Hogwarts staffroom.

The newest footage also shows a redesigned Entrance Hall, Professor Sprout’s greenhouse and Gryffindor common room.

HBO is clearly walking a difficult line: Hogwarts needs to feel familiar without looking like someone simply rebuilt the movie sets.

The Hogwarts Uniforms Look Different

The students still wear the traditional black robes described in the books, but HBO has redesigned several aspects of the Hogwarts uniform.

House colors remain part of the clothing, while a simplified “H” crest replaces the more elaborate Hogwarts coat of arms familiar from the films.

The house heraldry has also been redesigned throughout the school.

Those changes may sound minor, but they’re important to establishing this as another interpretation rather than an imitation of the films.

The Sorting Hat Is Closer To The Book Description

The Sorting Hat has also received a redesign.

Rather than simply reproducing the movie prop, the television version more closely resembles the patched, battered wizard’s hat described in the novel.

The trailers provide glimpses of Harry’s Sorting Ceremony and the new students entering their respective houses.

Considering the first season has eight episodes, there should also be much more room for Hogwarts house life after the Sorting is finished.

Quidditch Will Be A Major Part Of Season 1

Harry’s first year wouldn’t be complete without Quidditch.

The newest footage provides an extensive look at the new Quidditch pitch, Hogwarts uniforms and Harry flying as Gryffindor’s remarkably young Seeker.

HBO has also cast numerous members of the school teams rather than only the players absolutely necessary for the plot.

Orson Matthews plays Gryffindor captain Oliver Wood, while Asha Soetan, Eire Farrell and Serrana Su-Ling Bliss play Angelina Johnson, Katie Bell and Alicia Spinnet.

Ethan Smith plays Lee Jordan, the enthusiastic commentator whose presence should give HBO another opportunity to restore some of the books’ humor.

The Supporting Student Cast Is Huge

HBO has gone significantly deeper into Harry’s Hogwarts classmates than might be expected from a first-season adaptation.

Rory Wilmot plays Neville Longbottom, while Leo Earley is Seamus Finnigan and Elijah Oshin plays Dean Thomas.

Alessia Leoni is Parvati Patil, with Sienna Moosah playing Lavender Brown.

The series has also cast students from Hufflepuff and Ravenclaw who received comparatively little screen time in the movies, including Hannah Abbott, Justin Finch-Fletchley, Ernie Macmillan, Susan Bones, Padma Patil and Terry Boot.

Some of those characters become more important several books later.

Casting them now suggests HBO wants Hogwarts to feel populated by the same students Harry repeatedly encounters as he grows up.

Professor Binns Will Actually Appear

Another seemingly tiny detail says a lot about the adaptation.

Richard Durden has been cast as Professor Cuthbert Binns.

Binns teaches History of Magic and is notable because he happens to be dead. The professor simply continued teaching after becoming a ghost.

He never appeared in the movies.

Like Peeves, Binns isn’t essential to understanding Harry’s battle against Voldemort, which is exactly why he was easy to cut from a feature film.

Television doesn’t have the same limitation.

Those smaller characters are part of what gives Hogwarts its personality.

Hans Zimmer Is Creating The New Harry Potter Music

Recreating Harry Potter visually is difficult.

Recreating its musical identity may be even harder.

John Williams’ original themes are among the most recognizable film scores ever composed, particularly “Hedwig’s Theme.”

HBO has turned to Hans Zimmer and Bleeding Fingers Music to create a new score for the television series.

Zimmer is working alongside composers Kara Talve and Anže Rozman.

The team has acknowledged the enormous musical legacy they’re inheriting while emphasizing that the new series will develop its own sound.

The new music has been deliberately held back from some of the early promotional footage, making it one of the biggest pieces of the series audiences still haven’t properly heard.

Who Is Making The Harry Potter Series?

Francesca Gardiner serves as showrunner, writer and executive producer.

Gardiner’s previous credits include HBO’s Succession, giving the series an experienced prestige-television writer rather than treating the project like an oversized feature film broken into episodes.

Mark Mylod is an executive producer and directs multiple episodes.

Mylod has worked on Succession and Game of Thrones, making him another filmmaker already familiar with expensive HBO productions involving enormous ensembles.

David Heyman, who produced all eight Harry Potter movies, is also an executive producer.

That creates an important creative bridge between the original films and the television adaptation even though the show is intentionally developing a different visual identity.

J.K. Rowling Is An Executive Producer

Harry Potter author J.K. Rowling remains directly involved with the new adaptation as an executive producer.

Neil Blair and Ruth Kenley-Letts of Brontë Film and TV also executive produce alongside Rowling, Gardiner, Mylod and Heyman.

HBO has consistently described the series as a faithful adaptation of Rowling’s novels, with the author’s involvement intended to help maintain continuity with the source material.

The Series Is Filming At The Home Of The Harry Potter Movies

Production returned to Warner Bros. Studios Leavesden in Hertfordshire, England.

That’s particularly significant because Leavesden served as the production home of the original eight movies and remains closely associated with the Wizarding World.

The sets themselves are being recreated rather than simply reused, but returning to Leavesden gives the new project a literal connection to where the franchise’s cinematic history began.

The New Trailer Shows Much More Than The First Teaser

HBO’s newest look at the series gives audiences their clearest picture yet of how closely Season 1 follows the novel.

Among the recognizable moments are Harry’s Sorting Ceremony, his first experiences with Quidditch, the Mirror of Erised, the invisibility cloak and the famous troll encounter.

Luke Thallon’s Professor Quirrell can also be seen wearing his distinctive purple turban.

The trailers mix scenes familiar from the original movie with moments that either received little screen time or were never previously dramatized.

That’s probably the balance HBO will need throughout the series.

The major moments can’t disappear simply because audiences have seen them before, but the strongest argument for another adaptation is showing viewers something they haven’t already watched eight times.

The Television Series Won’t Replace The Original Movies

Warner Bros. has repeatedly emphasized that the original Harry Potter films aren’t being removed or treated as obsolete.

They remain part of the franchise and will continue being available around the world.

That’s an important distinction.

The HBO series isn’t attempting to erase Daniel Radcliffe, Rupert Grint, Emma Watson, Alan Rickman, Maggie Smith or the rest of the original cast.

It’s another adaptation of the same novels, much like classic books can receive multiple film or television interpretations over time.

How Faithful Will The Series Be To The Books?

“Faithful” has become the word HBO repeatedly uses when discussing the project.

That doesn’t mean every scene will be recreated word for word.

In fact, the first trailers already demonstrate that HBO is willing to expand brief references from the novels into fully dramatized scenes.

The goal appears to be preserving the characters, chronology and larger structure of the books while using television’s additional running time to explore material the movies couldn’t include.

That could eventually become particularly important.

The first two Harry Potter movies are already relatively faithful adaptations because the early books are shorter. The differences become much more dramatic once the story reaches Goblet of Fire, Order of the Phoenix and the enormous later novels.

Those are the seasons where television could justify the entire reboot.

Will Every Book Get Its Own Season?

That remains the basic structure HBO is building toward.

The original announcement envisioned a project spanning roughly a decade, with the seven Harry Potter novels adapted across multiple seasons.

Season 1 covers Philosopher’s Stone.

Season 2 is already moving forward with Chamber of Secrets.

Exactly how HBO handles the much longer later novels hasn’t been announced. It’s possible those stories could receive longer seasons or eventually require structural adjustments.

For now, however, the strategy is straightforward: begin at Harry’s first year and continue growing with him.

Season 2 Is Already Happening

HBO isn’t waiting to see how Season 1 performs before beginning preparations for Harry’s second year.

Season 2 is officially moving forward, with production scheduled to begin during fall 2026.

That accelerated schedule makes sense.

McLaughlin, Stanton, Stout and the rest of the young cast are going to physically grow very quickly, while the books only advance approximately one school year at a time.

Waiting two or three years between seasons would eventually create an obvious problem.

HBO is therefore attempting to keep production moving with relatively small gaps between installments.

Season 2 Is Getting An Additional Showrunner

Francesca Gardiner will be joined by Jon Brown as co-showrunner for Season 2.

Brown worked as a writer on the first season and previously collaborated with Gardiner through Succession.

The decision appears largely connected to the production demands of developing one season while another is still moving through post-production and release.

If HBO really intends to keep Harry Potter moving at a pace that matches its young cast, overlapping seasons may become the normal production model.

Kit Harington Will Play Gilderoy Lockhart In Season 2

HBO has already made one major casting announcement for Harry’s second year.

Game of Thrones star Kit Harington will play Professor Gilderoy Lockhart in Harry Potter and the Chamber of Secrets.

Harington replaces Nicholas Hoult, who had previously been attached to the role before leaving because of scheduling conflicts.

Lockhart becomes the new Defence Against the Dark Arts professor during Harry’s second year and quickly establishes himself as one of the most entertainingly unbearable teachers Hogwarts has ever employed.

The casting also brings Harington back to HBO after spending eight seasons playing Jon Snow.

Several Major Characters Still Haven’t Been Revealed

Despite the enormous cast list, HBO is still keeping some important characters hidden.

The series hasn’t publicly revealed every major figure who will appear as the story progresses, and some characters won’t become relevant until future seasons.

That means audiences are still waiting to see who eventually takes on roles including Sirius Black, Remus Lupin, Bellatrix Lestrange, Mad-Eye Moody and Dolores Umbridge.

There are also likely more first-season surprises HBO hasn’t announced yet.

The identity and presentation of Voldemort remains one of the biggest questions surrounding the adaptation.

Can HBO Make Harry Potter Feel New Again?

That’s ultimately the question hanging over everything.

The original Harry Potter movies aren’t distant memories. They’re still enormously popular, frequently rewatched and deeply tied to how millions of people picture Hogwarts and its characters.

HBO therefore has to accomplish two contradictory things.

It needs to remain faithful enough that the series still feels unmistakably like Harry Potter while being different enough to justify retelling a story audiences already know.

The early strategy makes sense.

Use younger actors closer to the characters’ canonical ages. Restore missing characters such as Peeves and Professor Binns. Expand Hogwarts. Spend more time with secondary students. Reintroduce events the films skipped. Establish a new visual language and commission an entirely new musical identity.

None of that guarantees the series will recreate the cultural phenomenon surrounding the original films.

But it does give the show a reason to exist beyond simply making Harry Potter again.

Harry Potter Is About To Become A Very Long Television Commitment

If HBO’s plan works, Christmas 2026 isn’t simply the premiere of another major streaming series.

It’s the beginning of something Warner Bros. hopes audiences will follow for most of the next decade.

The new Harry, Ron and Hermione could grow up on television much like Radcliffe, Grint and Watson grew up in theaters.

The relatively simple mystery surrounding the Philosopher’s Stone will eventually expand into Azkaban, the Triwizard Tournament, the return of Voldemort, Dumbledore’s Army, the Horcruxes and the Battle of Hogwarts.

But HBO has plenty of time before reaching any of that.

For now, Harry is still an 11-year-old boy living under the stairs who doesn’t know Hogwarts exists.

And this Christmas, audiences get to watch him receive that letter all over again.

Harry Potter and the Philosopher’s Stone premieres Christmas 2026 on HBO and HBO Max.