‘Harry Potter’ TV Show Cast Guide: Who’s Who in Hogwarts?

'Harry Potter'
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It’s almost time for a whole new generation of wizards and witches to be welcomed into Hogwarts.

Harry Potter,” the beloved fantasy book series from author J.K. Rowling that was turned into a blockbuster film franchise, is coming to HBO as a new TV series. Each of the seven books in the series, “Sorcerer’s Stone,” “Chamber of Secrets,” “Prisoner of Azkaban,” “Goblet of Fire,” “Order of the Phoenix,” “Half-Blood Prince” and “Deathly Hallows,” will each be adapted into one season of TV.

In May 2025, the trio of lead roles had finally been unveiled: Dominic McLaughlin will play the role of Harry Potter, Arabella Stanton will play Hermione Granger and Alastair Stout will play Ron Weasley. The three are largely newcomers with few prior acting credits. McLaughlin acted in “Grow,” a comedy on Sky with Nick Frost and Golda Rosheuvel, Stanton starred as Matilda in the musical of the same name in the West End, and Stout had no prior acting credits.

HBO auditioned more than 32,000 children for the lead role of Harry Potter, famously originated by Daniel Radcliffe. Executive producer Mark Mylod said that the casting team had been reviewing between 500 and 1,000 audition tapes per day.

“After an extraordinary search led by casting directors Lucy Bevan and Emily Brockmann, we are delighted to announce we have found our Harry, Hermione, and Ron. The talent of these three unique actors is wonderful to behold, and we cannot wait for the world to witness their magic together onscreen. We would like to thank all the tens of thousands of children who auditioned. It’s been a real pleasure to discover the plethora of young talent out there,” said showrunner Francesca Gardiner and executive producer and director Mark Mylod in a statement revealing the three actors.

Other series regulars include “Conclave” star John Lithgow as Album Dumbledore, “I May Destroy You” breakout star Paapa Essiedu as Severus Snape, “Tumbleweeds” Oscar nominee Janet McTeer as Professor McGonagall and “Shaun of the Dead” comedian Nick Frost as Hagrid. Meanwhile, Paul Whitehouse (Tom Stoppard’s “Leopoldstadt,” Rupert Goold’s “Patriots”) and Luke Thallon (“The Fast Show,” “Harry & Paul”) take on recurring roles as Hogwarts caretaker Argus Filch and Defense Against the Dark Arts professor Quirinus Quirrell, respectively.

The “Harry Potter” series is written and executive produced by Gardiner, who also serves as showrunner. Mylod will executive produce and direct multiple episodes of the series for HBO in association with Brontë Film and TV and Warner Bros. Television. The series is executive produced by author J.K. Rowling, Neil Blair, and Ruth Kenley-Letts of Brontë Film and TV, and David Heyman of Heyday Films.

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See who all of the confirmed “Harry Potter” cast members are below.

From Variety US