Lyndsey Marshal (born 16 June 1978) is an English actress best known for her performance in The Hours, as the recurring character Cleopatra on HBO's Rome, and as Lady Sarah Hill in BBC period drama Garrow's Law.

[3] Her first major part was in the play Fireface at the Royal Court Theatre, which she took just before graduation.

In 2003, she won the TMA Theatre Award for Best Supporting Actress in A Midsummer Night's Dream.

She appeared alongside James McAvoy in the 2009 West End production Three Days of Rain.

Marshal has appeared in the films The Hours alongside Nicole Kidman, and Hereafter, directed by Clint Eastwood.