Andrea Louise Riseborough (born 20 November 1981) is an English actress. She made her film debut with a small part in Venus (2006), and has since appeared in more prominent roles in Brighton Rock (2010), W.E. (2011), Shadow Dancer (2012), Oblivion (2013), Birdman (2014), Nocturnal Animals (2016), Battle of the Sexes, The Death of Stalin (both 2017), Mandy, Nancy (both 2018), The Grudge, and Possessor (both 2020). For playing an alcoholic in To Leslie (2022), she was nominated for the Academy Award for Best Actress.

Riseborough was nominated for a BAFTA TV for her portrayal of Margaret Thatcher in the television film The Long Walk to Finchley (2008). She won critical acclaim for her performances in the Channel 4 miniseries The Devil's Whore (2008) and National Treasure (2016), as well as the BBC One miniseries The Witness for the Prosecution (2016). Her stage credits include Miss Julie, Measure for Measure (both 2006), and Anton Chekhov's Ivanov (2008).