HBO’s Harry Potter series casts Janet McTeer as McGonagall, Paapa Essiedu nears Snape deal

HBO’s Harry Potter reboot is finalizing two major casting decisions. Janet McTeer is set to play McGonagall, while Paapa Essiedu is nearing a deal for Snape.

The series, a decade-long adaptation of J.K. Rowling’s beloved books, is set to debut in late 2026 or early 2027.

McTeer, known for Ozark and Albert Nobbs, would follow in the footsteps of Maggie Smith, who originally played McGonagall in the film series. Meanwhile, Essiedu, recognized for I May Destroy You and The Lazarus Project, is set to take on the role of Snape, previously portrayed by the late Alan Rickman.

They are expected to join John Lithgow, who has been cast as Albus Dumbledore. Showrunner Francesca Gardiner has emphasized that the series will remain a “faithful adaptation” of Rowling’s books, with characters portrayed at their canonical ages—meaning Snape will be just 31 when introduced.

Filming will take place at Warner Bros. Studios Leavesden, the same location as the original movies. The Harry Potter reboot aims to expand representation within the Wizarding World, continuing the franchise’s push for inclusivity seen in Harry Potter and the Cursed Child.

With over 32,000 auditions submitted for Harry, Hermione, and Ron, fans eagerly await final casting announcements before the series' highly anticipated launch.