Dónal Finn (born 31 August 1995) is an Irish actor. He is known for playing Mat Cauthon in the Amazon Prime Video fantasy series The Wheel of Time and for originating the role of Orpheus in the West End production of Hadestown. In 2026, he co-starred in the Prime Video series Young Sherlock as James Moriarty and in The Other Bennet Sister as Mr Tom Hayward.
Finn was born and raised in Dromina, County Cork. He is one of eight children, from a farming family in rural Ireland.
Finn was awarded a three-year scholarship at the London Academy of Music and Dramatic Art through the Overstall Charitable Trust. He graduated with a Bachelor of Arts in acting from LAMDA in 2018.
After graduating from LAMDA, Finn made his first notable appearance in an episode of the Netflix series The Witcher as a peasant named Nettly in 2019.
Finn also had a small role as a baker named Albert in '.
In 2022, Finn was cast in the role of soldier Eoin McGonigal in the first series of the BBC drama '. That same year, he was cast as Mat Cauthon in the second season of The Wheel of Time, succeeding Barney Harris in the role.
In 2023, he was named one of the inaugural "Rising Stars of Ireland" by Screen International and Screen Ireland.
In February 2024, Finn played the role of Orpheus in the West End production of Hadestown. Finn left the production on 25 August 2024.
In July 2024, it was announced Finn would appear as James Moriarty alongside Hero Fiennes Tiffin's Sherlock Holmes in the 2026 Amazon Prime Video series Young Sherlock.
In March 2026, Finn starred as Mr. Hayward in The Other Bennet Sister.
Film
Television
Theatre