Haydn Gwynne (21 March 1957 – 20 October 2023) was an English actress. She was nominated for the 1992 BAFTA TV Award for Best Light Entertainment Performance for the comedy series Drop the Dead Donkey (1990–1991), and won the 2009 Drama Desk Award for Outstanding Featured Actress in a Musical for her role in the Broadway production of Billy Elliot the Musical. She was also a four-time Olivier Award nominee. Her other television roles included Peak Practice (1999–2000), Merseybeat (2001–2002), and playing Camilla in The Windsors (2016–2023).

Filmography