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Release date
Season 1 of HBO's Harry Potter series premieres on 25 December 2026.
| Premiere | 25 December 2026 (Christmas Day) |
| Where to watch | HBO, and streaming exclusively on HBO Max where available (by country) |
| Season 1 | Harry Potter and the Philosopher's Stone |
| Episodes | 8 (episode guide) |
| Showrunner | Francesca Gardiner |
| Director | Mark Mylod (several episodes) |
| Harry Potter | Dominic McLaughlin (full cast) |
One book per season
Each season adapts one of the seven Harry Potter books, starting with Philosopher's Stone. Some actors have already been confirmed for season 2, Chamber of Secrets: Kit Harington as Gilderoy Lockhart, Rafe Spall as Arthur Weasley and Lenny Rush as Dobby, among others.
Timeline
| 12 April 2023 | The series is announced, promising to be “authentic to the original books”. |
| 25 March 2026 | First official teaser. The premiere is set for 25 December 2026. |
| 2 September 2026 | Second official teaser trailer. |
| 24 September 2026 | The official cast list reaches more than 70 roles. |
| 29 October 2026 | First official poster. |
| 25 December 2026 | Premiere of season 1. |
After each episode airs, its differences with the book will be added to every difference.



