Harry Potter HBO Series Casting: Who’s Waving the Wand?


Potterheads, get your wands ready—the HBO Harry Potter TV series is brewing, and the casting cauldron is bubbling with exciting updates! As of March 27, 2025, the decade-long adaptation of J.K. Rowling’s iconic books is gearing up to start filming this summer at Warner Bros. Leavesden Studios. With a 2026 or 2027 premiere on the horizon, the question on everyone’s mind is: Who’s stepping into the robes of our favorite Hogwarts heroes and villains? Here’s the latest scoop!
Confirmed: John Lithgow as Dumbledore


The first official casting spell was cast in February when John Lithgow confirmed he’ll play Albus Dumbledore, the wise and whimsical Hogwarts headmaster. The 79-year-old Emmy winner (known for Dexter and The Crown) told ScreenRant it wasn’t an easy decision—after all, he’ll be around 87 by the series’ end—but he’s thrilled to take on the role. Some fans raised eyebrows at an American playing the famously British wizard (previously brought to life by Richard Harris and Michael Gambon), but Lithgow’s talent might just win over the doubters.

Almost Locked In: Snape and McGonagall
The casting net’s been busy! Deadline reports that Paapa Essiedu (Gangs of London) is closing a deal to play Severus Snape, the greasy-haired Potions Master with a heart of… well, we won’t spoil it. This has sparked debate—Snape’s described as pale and sallow in the books, and Essiedu’s casting marks a shift. Some fans cheer the diversity, while others argue it strays too far from canon. Meanwhile, Janet McTeer (Ozark) is in talks to embody Minerva McGonagall, the stern yet fiercely loyal Transfiguration professor. Both could join Lithgow soon, pending final deals.

Hagrid Rumors: Nick Frost in the Mix?


Another name swirling around is Nick Frost (Shaun of the Dead), reportedly nearing a deal to play the lovable half-giant Rubeus Hagrid. Frost’s comedic chops and warmth could make him a perfect fit, though HBO’s staying mum for now. Posts on X are buzzing with excitement—and a few “he’s gotta nail that beard!” quips.
The Golden Trio: Unknown Kids Wanted
Harry, Ron, and Hermione? Still a mystery! HBO’s sticking to tradition with an open casting call for unknown British and Irish kids aged 9-11 (as of April 2025). Over 32,000 hopefuls sent audition tapes last year, and the search is narrowing. Expect fresh faces to carry the Sorcerer’s Stone forward, just like Radcliffe, Grint, and Watson did back in the day.
What’s Next?
With showrunner Francesca Gardiner (Succession) and director Mark Mylod (Game of Thrones) steering the ship, this series promises a faithful dive into all seven books. Want to keep up with every casting reveal and sneak peek? Download our app, Streambros, a free Android gem that streams live TV, movies, series, sports, news, and YouTube content. Catch international channels and download clips in MP4 or MP3 to stay in the Harry Potter loop!
The Hogwarts Express is rolling—who else do you want to see cast? >>SEE MORE HERE