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Katherine Parkinson, Johnny Flynn and more join HBO Harry Potter cast

June 9, 2025

By Nik Roseveare

The HBO Original Harry Potter series has announced nine additional cast members following the recent reveal of the Harry, Hermione Granger and Ron Weasley actors. The new cast members are:

    • Katherine Parkinson, known for roles in the likes of The IT Crowd and Rivals, will play Molly Weasley
    • Lox Pratt, set to star in the BBC’s upcoming adaptation of Lord of the Flies, will play Draco Malfoy
    • Actor and musician Johnny Flynn, who recently featured in Netflix’s Ripley series, will play Lucius Malfoy
    • Bel Powley, who has played main roles in A Small Light and The Morning Show, will play Petunia Dursley
    • Daniel Rigby, known for his roles in the likes of Flowers and Renegade Nell, has been cast as Vernon Dursley
    • British film and theatre actor, Bertie Carvel, whose TV credits include The Sister and Baghdad, will play Cornelius Fudge
    • Leo Earley, Alessia Leoni and Sienna Moosah will play Hogwarts students Seamus Finnigan, Parvati Patil and Lavender Brown respectively

The series will serve as a faithful adaptation of the celebrated Harry Potter books by JK Rowling. Each season will bring Harry Potter to new and existing audiences, streaming exclusively on HBO Max where it’s available, including in upcoming launch markets Germany, Italy and the UK.  The original movies will remain available to watch around the world.

The series is written and executive produced by Francesca Gardiner. Mark 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 Rowling, Neil Blair and Ruth Kenley-Letts of Brontë Film and TV, and David Heyman of Heyday Films.

In December 2024, Gardiner and Mylod revealed how they were approaching their new adaptation during a Max showcase.

 

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