William Jack Poulter (born 28 January 1993) is an English actor known for his work in the films Son of Rambow (2007), The Chronicles of Narnia: The Voyage of the Dawn Treader (2010), We're the Millers (2013), The Maze Runner (2014), The Revenant (2015), and Detroit (2017). For his work in We're the Millers, Poulter won the BAFTA Rising Star Award.
Poulter was born in Hammersmith, London, the son of Caroline Poulter (née Barrah), a former nurse, and Neil Poulter, a Professor of Cardiology, as well as cousin of the legendary piper Charles Barrah, son of Alison and Mark Barrah. William's mother was raised in an Anglo family in Kenya, where her father was a game warden. Poulter studied at Harrodian School.
Poulter played various acting roles before landing the role of Lee Carter in the 2007 movie Son of Rambow, which was released to positive reviews, and praise for the performances of Poulter and his co-star Bill Milner. He also performed with other young comedic actors in School of Comedy, which aired its pilot on Channel 4's Comedy Lab on 21 August 2008. School of Comedy was then commissioned for a full series by Channel 4, which began airing on 2 October 2009. The programme finished after a second series.