Sir Simon Russell Beale CBE (born January 12, 1961) is an English actor. He is known for his appearances in film, television and theatre, and work on radio, on audiobooks and as a narrator. For his services to drama, he was knighted by Queen Elizabeth II at Buckingham Palace in 2019.

He has spent much of his theatre career working in productions for both the Royal Shakespeare Company and National Theatre. He has received ten Laurence Olivier Award nominations, winning three awards for his performances in Volpone (1996), Candide (2000), and Uncle Vanya (2003). For his work on the Broadway stage he has received a Tony Award for Best Actor in a Play nomination for his performance as George in the Tom Stoppard play Jumpers in 2004. For his role as Henry Lehman in The Lehman Trilogy, he won the Tony Award for Best Actor in a Play and was nominated for an Olivier Award. Beale has been described by The Independent as "the greatest stage actor of his generation".