Jessica Hynes (née Stevenson; born 15 November 1972) is an English actress and writer. She was known professionally as Jessica Stevenson until 2007.

She is perhaps best known as one of the creators and writers of the British sitcom Spaced, in which she played Daisy. In 2009 she was nominated for the Tony Award for Best Performance by a Featured Actress in a Play.

She lives in London with her husband Adam Hynes, whom she met when she was 18, and married in 2002. They have three children.