Ella Summer Purnell (born 17 September 1996) is an English actress. She began her career as a child actress on the West End and in the films Never Let Me Go (2010), Intruders (2011), Wildlike and Maleficent (both 2014).

On television, Purnell went on to star in the BBC drama Ordeal by Innocence (2018), the Starz series Sweetbitter (2018–2019), the ITV miniseries Belgravia (2020), and the Showtime thriller Yellowjackets (2021–2023).

Her films include Miss Peregrine's Home for Peculiar Children (2016), Churchill (2017), and Army of the Dead (2021). She voiced Jinx in the Netflix series Arcane and Gwyn in the Paramount –Nickelodeon series Star Trek: Prodigy (both 2021).

Early life
Ella Summer Purnell was born in the Whitechapel area of East London on 17 September 1996 and raised in Bethnal Green. She attended Bethnal Green Montessori, Forest School, the City of London School for Girls, and the Young Actors Theatre Islington. She also attended weekly classes at the Sylvia Young Theatre School, studying acting, singing, and dance, and was represented by their in-house talent agency.