Nancy Carroll is an English actress born on 28 November 1974. She has worked extensively in theatre, particularly with the Royal Shakespeare Company, and has won Best Actress at both the Olivier Awards and the Evening Standard Awards.

On screen, she is widely known for playing Lady Felicia Montague in the long-running BBC series Father Brown, and for leading BritBox's Murder in Provence as Marine Bonnet, a criminology professor and partner of an investigating judge, alongside Roger Allam. Her television credits also include The Crown, The Diplomat, Dalgliesh, Will, Agatha Raisin, Lewis and Midsomer Murders. She appeared in the film Magic Mike's Last Dance and in F1, and starred in the BBC's A Ghost Story for Christmas: The Room in the Tower. She also appeared in National Theatre Live: The Magistrate and Young Marx. She can be seen in DC Studios' horror film Clayface.