Will Keen (William Walter Maurice Keen, born 4 March 1970, Oxford) is an English stage, film, and television actor, active since 1993. He is the grandson of Edward Curzon, 6th Earl Howe, and father of actress Dafne Keen. He has been married to María Fernández Ache since 2002. Keen won the 2023 Olivier Award for Best Actor in a Supporting Role for playing Vladimir Putin in Peter Morgan's Patriots, which transferred from the Almeida to the West End and then to Broadway. His most notable screen roles include Michael Adeane in The Crown (2016–17) (Claire Foy, Matt Smith), Father MacPhail in His Dark Materials (2019–22) (James McAvoy, Lin-Manuel Miranda), and Ian Fleming in Operation Mincemeat (2021) (Colin Firth, Jason Isaacs). He also played Lord Belzagar in The Lord of the Rings: The Rings of Power season 2 (2024) (Ciarán Hinds, Rory Kinnear) and Boris Berezovsky in Olivier Assayas' The Wizard of the Kremlin (Jude Law, Paul Dano), which premiered at Venice in August 2025.