Professor Trelawney Audiobook Voice Actor Fans Are Obsessed With
Professor Trelawney in the new Audible full-cast Harry Potter audiobooks is voiced by Saoirse-Monica Jackson, the Northern Irish actor best known for Derry Girls, according to Audible, Pottermore Publishing, and official Harry Potter announcements.
Who is voicing Trelawney
The casting was revealed on October 21, 2025, as part of the expanding lineup for the Harry Potter: The Full-Cast Audio Editions, which involve more than 200 performers.
That means the answer to the fan question is straightforward: Saoirse-Monica Jackson is the audiobook voice actor for Professor Trelawney in the new production.
Why fans are talking about it
Fans are especially focused on this casting because Trelawney is one of the franchise's most theatrical characters, and the role benefits from a performer with a strong comic and dramatic range.
Jackson's casting has drawn attention because Audible's new adaptation is positioned as a major reimagining of the books, not just a simple narration update, with a large ensemble and staggered monthly releases beginning November 4, 2025.
In a promotional video tied to the release, Audible highlighted the performance with the line that Jackson "brings all the mystique, drama, and theatrical flair," framing her as a deliberately expressive choice for the role.
Release context
The full-cast project was first announced in April 2024, and later casting reveals confirmed a roster that includes Bill Nighy, David Holmes, Anna Maxwell Martin, Mackenzie Crook, Stephen Mangan, and others across the core Hogwarts and wizarding-world roles.
According to the official rollout, Harry Potter and the Philosopher's Stone debuted on November 4, 2025, with the remaining books scheduled monthly through May 2026.
The classic single-voice English audiobooks narrated by Stephen Fry and Jim Dale remain available on Audible alongside the new full-cast editions.
Cast snapshot
| Character | Voice actor | Source note |
|---|---|---|
| Professor Trelawney | Saoirse-Monica Jackson | Official 2025 cast announcement |
| Professor Slughorn | Bill Nighy | Official 2025 cast announcement |
| Rita Skeeter | Anna Maxwell Martin | Official 2025 cast announcement |
| Nearly Headless Nick | Stephen Mangan | Official 2025 cast announcement |
What makes this casting notable
Audience reaction has centered on the match between Jackson's sharp, eccentric screen presence and Trelawney's overblown, fortune-teller energy, which is a character type that can fail without the right timing.
The production's scale also matters: Audible says the project spans more than 200 actors, making it one of the most ambitious English-language audiobook undertakings tied to the Harry Potter brand.
That scale gives the role extra visibility because the cast announcements are being treated almost like a prestige television ensemble reveal, even though the format is audio.
Timeline and milestones
- April 2024: Pottermore Publishing and Audible announce a brand-new co-production of the original seven books.
- October 21, 2025: Additional cast members are revealed, including Saoirse-Monica Jackson as Professor Trelawney.
- November 4, 2025: The first full-cast audiobook, Philosopher's Stone, launches.
- December 2025 to May 2026: The remaining six audiobooks roll out monthly.
Listening takeaway
If you are searching for the Professor Trelawney audiobook voice actor, the name to know is Saoirse-Monica Jackson, and the version you want is the Audible full-cast edition of Harry Potter.
The most important practical detail is that this is not the older Stephen Fry or Jim Dale narration; it is a new ensemble production built around character-specific performances.
"Saoirse-Monica Jackson as Professor Trelawney" is the official casting line that confirms the role.
Fan interest is likely to stay high because this casting combines a cult-favorite character, a well-known performer, and a high-profile audiobook reboot that is being marketed as a major event.
Helpful tips and tricks for Professor Trelawney Audiobook Voice Actor Fans Are Obsessed With
Who voices Professor Trelawney?
Saoirse-Monica Jackson voices Professor Trelawney in the new Harry Potter full-cast audiobooks.
Is this the original audiobook series?
No. This is a new full-cast Audible production, separate from the long-running single-narrator editions by Stephen Fry and Jim Dale.
When did the casting announcement happen?
The casting announcement that included Professor Trelawney was published on October 21, 2025.
Where can listeners hear it?
The new full-cast audiobooks are available through Audible, with the first release arriving on November 4, 2025.