Olivia Haigh Williams is an English film, stage and television actress who has appeared in British and American films and television.
Williams was born in north London. Both of her parents are barristers. Williams was educated at South Hampstead High School, an independent school for girls in Hampstead in north London, followed by Newnham College at the University of Cambridge, from which she graduated with a degree in English literature. She then studied drama at the Bristol Old Vic Theatre School for two years and spent three years at the Royal Shakespeare Company.