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Nicholas Hoult Cast as Gilderoy Lockhart for HBO’s Harry Potter Season Two

The casting adds momentum to the reboot as producers ready the Chamber of Secrets season and keep filming dates and remaining roles under active development.

Overview

  • HBO confirmed Wednesday that Nicholas Hoult will portray Gilderoy Lockhart in the series’ second season, which adapts Harry Potter and the Chamber of Secrets.
  • The first season, adapting Harry Potter and the Philosopher’s Stone with a new child cast, is scheduled to premiere on HBO/HBO Max on December 25, 2026.
  • Series leadership combines new show creatives Francesca Gardiner, Mark Mylod and Jon Brown—who was promoted to co-showrunner for season two—with original franchise executive producers including J.K. Rowling and David Heyman.
  • Reports say filming for season two is expected to begin in the coming months, though precise start dates vary across outlets and the production timeline remains fluid.
  • Casting remains active and partly unsettled: some child casting changes have been reported and high-profile names linked to roles, such as Cillian Murphy for Voldemort, have not been confirmed by representatives or the company.