Alfie Evan Allen (born September 12, 1986) is an English actor, best known for his role as Theon Greyjoy on the HBO fantasy series Game of Thrones (2011–2019), for which he received a nomination for the Primetime Emmy Award for Outstanding Supporting Actor in a Drama Series in 2019. In film, he is best known for his starring roles in John Wick (2014), The Predator (2018), and Jojo Rabbit (2019). His older sister is singer Lily Allen. Allen's first professional appearance was in a one-off Channel 4 comedy, You Are Here in 1998. The same year, Allen and his sister Lily appeared in the 1998 film, Elizabeth, which was produced by their mother. His early work included small roles in Agent Cody Banks 2: Destination London, Atonement and BBC1's historical hospital drama, Casualty 1907. In 2008, he took over Daniel Radcliffe's role in the stage play, Equus. He has continued to work in films, appearing in Soulboy, The Kid, Freestyle and Powder in 2010. In 2012, he starred in the British thriller, Confine. 

Filmography

• Girl Taken — Rick Hansen
• Atomic — Max, Creator
• Safe Harbor — Tobias Chapman
• 2024McVeigh — Tim
• SAS Rogue Heroes — Jock Lewes
• 2021La Cha Cha — Dooty Davies
• 2021Night Teeth — Victor
• 2020How to Build a Girl — John Kite
• White House Farm — Brett Collins
• 2019Jojo Rabbit — Finkel
• 2018The Predator — Lynch
• Harlots — Isaac Pincher
• Close to the Enemy — Ringwood
• 2016Pandemic — Wheeler
• 2016Patient Seven — The Man (segment: "The Body")
• 2014John Wick — Iosef Tarasov
• 2014Plastic — Yatesey
• 2013The Body — The Man
• 2012Confine — Henry
• Game of Thrones — Theon Greyjoy
• 2011Powder — Wheezer
• Accused — Michael Lang
• 2010Boogie Woogie — Photographer
• 2010Freestyle — Gez
• 2010SoulBoy — Russ Mountjoy
• 2010The Kid — Dominic
• 2009Freefall — Ian
• Moving On — Dave Farrow
• 2008Flashbacks of a Fool — Kevin Hubble
• 2008The Other Boleyn Girl — King's Messenger
• 2007Atonement — Danny Hardman
• 2007Cherries — James
• 2007Joe's Palace — Jason
• 2006Sixty Six — Younger Tout
• Jericho — Albert Hall
• 2005Stoned — Harry
• The Golden Hour — Clive
• 2004Agent Cody Banks 2: Destination London — Berkhamp on Double Bass
• Spaced — Skateboard Kid (uncredited)
• 1998Elizabeth — Arundel's Son
• 1998You Are Here — Son
• 1988The Yob — Child in Promo
• The Comic Strip Presents... — Child in Promo
• Eleven Missing Days
• Visitation

Appearances as themselves (4)

• Fantastic Friends — Self
• 2019Game of Thrones: The Last Watch — Self
• Football: A Brief History by Alfie Allen — Self - Host
• Untitled Lily Allen Documentary — Self