Rachel Hannah Weisz ( "vice"; born 7 March 1970) is an English actress. She began her acting career in the early 1990s, appearing in Inspector Morse, Scarlet and Black, and Advocates II. She made her film debut in Death Machine (1994). Her first Hollywood appearance was in Chain Reaction (1996), opposite Keanu Reeves and Morgan Freeman.

She has also worked in theatre. Her stage breakthrough was the 1994 revival of Noël Coward's play Design for Living, which earned her the London Critics' Circle Award for the most promising newcomer. Weisz's performances also include the 1999 Donmar Warehouse production of Tennessee Williams' Suddenly, Last Summer, and their 2009 revival of A Streetcar Named Desire. Her portrayal of Blanche DuBois in the latter play earned her the Olivier Award for Best Actress.

Weisz appeared in the film The Mummy in 1999 and The Mummy Returns in 2001. Other films that followed are Enemy at the Gates (2001), About a Boy (2002), Constantine (2005) and Darren Aronofsky's The Fountain. For her supporting role in the drama thriller The Constant Gardener (2005), she received an Academy Award, a Golden Globe and a Screen Actors' Guild award. In 2006, Weisz received the BAFTA Britannia Award for British Artist of the Year. She starred in Oz the Great and Powerful (2013), and appeared in two 2015 Cannes Film Festival films, Youth and The Lobster.

Weisz portrayed Deborah Lipstadt in Denial (2016), based on Lipstadt's book and directed by Mick Jackson. In 2017, she starred as the titular character in a film adaptation of My Cousin Rachel, based on the novel of the same name by Daphne du Maurier.