Elizabeth Debicki (born 24 August 1990) is an Australian actress. After studying drama at the Victorian College of the Arts, she made her film debut in the Australian comedy A Few Best Men (2011). Her role in Baz Luhrmann's The Great Gatsby (2013) won her the AACTA Award for Best Supporting Actress. She played Ayesha in the Marvel films Guardians of the Galaxy Vol. 2 (2017) and Guardians of the Galaxy Vol. 3 (2023). She gained critical attention for her performance in Steve McQueen's heist thriller Widows (2018). The following year, she received the Cannes Film Festival's Trophée Chopard. She then co-starred in Christopher Nolan's science fiction thriller Tenet (2020).
On television, Debicki appeared in the Australian series Rake (2014), starred in the BBC limited series The Night Manager (2016), for which she received a Critics' Choice Television Award nomination, and the HBO television film The Tale (2018). Debicki's acclaimed portrayal of Diana, Princess of Wales in the Netflix drama series The Crown (2022–2023) won her a Golden Globe Award, Critics Choice Award, Screen Actors Guild Award, and a nomination for a Primetime Emmy Award.