Known for roles in ‘The Lord of the Rings: The Rings of Power’ (Prince Durin IV), ‘The Expanse’ (Admiral Anton), and ‘The Last Kingdom’ (Aldhelm). Stage credits include the National Theatre. British actor John Macmillan.
Films
- The SonPaul2022
- SummerlandCaptain Davis2020
- The Souvenir Part IIMajid2021
- MovementJustin2018
- The Last Letter from Your LoverMalcolm2021
TV shows
- The Lord of the Rings: The Rings of PowerPrince Durin IV2022–2024
- The ExpanseAdmiral Anton2022
- The Last KingdomAldhelm2018
- His Dark MaterialsCaptain Carmichael2020
- The CrownDr. Patrick Treacy2022
- VeraSimon Richards2021
- EndeavourD.C. Ricky Fuller2015
- Midsomer MurdersJamie2013
- New TricksChris2013
- DoctorsLuke Saville2010
- CasualtyBen Tarrant2012
- The FearYoung Pete2012
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About John Macmillan
John Macmillan is a British actor who trained at RADA and has built a strong career in theatre, television and film. He is best known for his role as Prince Durin IV in Amazon’s ‘The Lord of the Rings: The Rings of Power’, and has appeared in acclaimed series such as ‘The Expanse’, ‘The Last Kingdom’ and ‘His Dark Materials’.
FAQs
What is John Macmillan best known for?
He is best known for playing Prince Durin IV in the Amazon series ‘The Lord of the Rings: The Rings of Power’ (2022–present).
Is John Macmillan the same person as the actor who plays Dark Urge in Baldur’s Gate 3?
No, that is a different voice actor (also named John Macmillan, but not the same person). Our John Macmillan is a British screen and stage actor.
What is John Macmillan’s stage background?
He trained at RADA and has performed with the Royal Shakespeare Company and at the National Theatre, including in ‘The Elephantom’ and ‘The Dead Dogs’.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026