As HBO’s new Harry Potter reboot progresses, the casting of the crucial role of Lord Voldemort remains a closely guarded secret. Although much of the primary cast has been unveiled, the identity of the actor who will portray the dark wizard, the series’ central antagonist, has yet to be officially confirmed. The topic has sparked widespread speculation, but nothing has been publicly announced as of early 2026.
Ralph Fiennes Shares His Thoughts on Possible Actor for Voldemort
Ralph Fiennes, known for his portrayal of Voldemort in the original Harry Potter film series, recently made comments that have intensified rumors about the new casting. When interviewed on the red carpet, Fiennes was asked about who might be playing the role in the upcoming HBO adaptation. He hinted at a name, saying,
“Well, I’m told they’re already filled, aren’t they?”
before mentioning Cillian Murphy as a potential choice.
He further added,
“I’ve already said I think Cillian Murphy is very good, A very, very good choice.”
Despite his praise, it remains unclear whether Fiennes was revealing confirmed information or simply echoing speculation circulating online, where Murphy’s name has been linked to Voldemort for several months.
Ambiguity Over Confirmation or Opinion Clouds the Casting Rumors
Fiennes appeared somewhat uncertain about the status of the casting, saying,
“I think they’ve cast it, haven’t they? I don’t know, I thought they had,”
which could suggest he either misspoke or does not have full details. This hesitation has left fans wondering whether Murphy has officially been secured for the role or if Fiennes was simply repeating widely shared but unverified rumors. Murphy’s association with the villain has circulated since last year, which means Fiennes might have been influenced by prior reports rather than inside information.
Cillian Murphy’s Response and Past Endorsements
Cillian Murphy, the acclaimed actor and Oscar winner known for his role in Oppenheimer, has addressed these rumors himself. In a 2025 podcast discussion, Murphy seemed to deny involvement, stating,
“No, my kids show me it occasionally, but no, I don’t know anything about that. I mean, also, it’s just really hard to follow anything Ralph Fiennes does. The man is an absolute acting legend. So, good luck to whoever is going to fill those shoes,”
making it clear he has no confirmed connection to the project yet.
Nonetheless, Fiennes has previously expressed strong support for Murphy taking on the character. In 2024, during an appearance on Watch What Happens Live, he said,
“Cillian is a fantastic actor. That’s a wonderful suggestion,”
and added,
“I would be all in favor of Cillian. Yeah.”
This nod from Fiennes further fuels expectations that Murphy could embody the villain’s legacy in the new series.
Other Potential Candidates and Production Updates
While Murphy’s name remains the most talked-about, other names have surfaced online, including surprising speculation about Tilda Swinton. The series reportedly considered actors of various genders for the role, but this possibility appears more theoretical than confirmed.
Filming for the Harry Potter reboot officially started in July 2025 and is still underway. The series has announced its main cast, featuring Dominic McLaughlin as Harry Potter, Arabella Stanton playing Hermione Granger, and Alastair Stout portraying Ron Weasley. They will be supported by veteran actors including John Lithgow as Albus Dumbledore, Janet McTeer as Minerva McGonagall, Paapa Essiedu in the role of Severus Snape, Nick Frost as Rubeus Hagrid, Luke Thallon cast as Professor Quirinus Quirrell, and Paul Whitehouse as Argus Filch.
Anticipation Builds for the Reveal of Voldemort’s Actor
The mystery surrounding the casting of Lord Voldemort continues to create anxious excitement among fans and observers. Ralph Fiennes’s hints about Cillian Murphy’s involvement have only intensified the speculation, though no official confirmation has been given. The series aims to honor the original’s legacy while introducing a fresh take, making the choice of Voldemort especially critical. As filming progresses, the eventual announcement of the actor will likely be a highly anticipated event, shaping the expectations for the entire reboot.
Cillian will never be free of the Voldemort rumors, no matter how much he denies it, will he? 😭 pic.twitter.com/bbS4zpNrcA
— michi³⁰ᴵ⁰⁷ (@gofckapineapple) January 23, 2026
