
Joshua Mathias O'Connor (born May 20, 1990) is a British actor. After training at the Bristol Old Vic Theatre School, he had supporting roles in television series such as Doctor Who in 2013 and Peaky Blinders in 2014. He had his breakthrough playing the lead role of a sheep farmer in Francis Lee's romantic drama God's Own Country (2017), for which he won a British Independent Film Award.
For portraying a young Charles III in the Netflix drama series The Crown (2019–2020), O'Connor won a Primetime Emmy Award and a Golden Globe Award. He has since starred in the period dramas Emma (2020) and La Chimera (2023) as well as Luca Guadagnino's Challengers (2024) and Rian Johnson's Wake Up Dead Man (2025).

Disclosure Day
2026 · as Daniel Kellner

Cinderella
2015 · as Ballroom Palace Guard

Wake Up Dead Man: A Knives Out Mystery
2025 · as Fr. Jud Duplenticy

Challengers
2024 · as Patrick Zweig

Emma.
2020 · as Mr. Elton

Lee
2024 · as Antony Penrose

God's Own Country
2017 · as Johnny Saxby

The Mastermind
2025 · as James Blaine Mooney

La Chimera
2023 · as Arthur

Hope Gap
2019 · as Jamie

The Riot Club
2014 · as Ed Montgomery

The History of Sound
2025 · as David

The Program
2015 · as Rich

National Theatre Live: Romeo and Juliet
2021 · as Romeo

Dark Matter
as Jack

Mothering Sunday
2021 · as Paul Sheringham

Florence Foster Jenkins
2016 · as Donaghy

Jack of Spades