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Ralph Fiennes Hints Voldemort Role Is Cast in HBO’s Harry Potter Series as Cillian Murphy Rumors Resurface

HBO has offered no confirmation, with Cillian Murphy having previously denied involvement.

Overview

  • In a red-carpet exchange, Fiennes said he was told the role was already filled and called Murphy a “very good” choice.
  • Pressed by interviewers, Fiennes appeared to backtrack, saying he only thought the role had been cast and quipping, “You caught me out.”
  • Murphy stated on the Happy Sad Confused podcast in late 2025 that he knew nothing about being cast as Voldemort.
  • Outlets note that HBO has not announced a Voldemort actor, even as fan speculation and enthusiasm spread online.
  • The series is slated for 2027, with Voldemort expected to appear in a later season due to the one-book-per-season structure.