Hannah Dominique E. John-Kamen (born 7 September 1989) is an English actress. She is known for her roles as Yalena "Dutch" Yardeen in the Syfy television series Killjoys (2015–2019), Ornela in the sixth season of the HBO series Game of Thrones (2016), F'Nale Zandor in Steven Spielberg's film Ready Player One (2018), Ava Starr / Ghost in the Marvel Studios superhero films Ant-Man and the Wasp (2018) and the upcoming Thunderbolts (2024), the title character in the Netflix mystery miniseries The Stranger (2020), and Jill Valentine in the film Resident Evil: Welcome to Raccoon City (2021).

Early life
Hannah Dominique E. John-Kamen was born in Anlaby, Humberside, England, on 7 September 1989, the daughter of a Norwegian fashion model mother and a Nigerian forensic psychologist father. She has an older brother and an older sister. She attended primary school in nearby Kirk Ella, received her secondary education at Hull Collegiate School, and trained at the National Youth Theatre in London. In 2012, she graduated from London's Central School of Speech and Drama.