Marc Sinden (born 9 May 1954) is an English film director, actor and theatre producer.Sinden has worked in film and theatre (mainly in London's West End) as both actor and producer and is currently directing the 40-part documentary series Great West End Theatres, detailing the history of the 40 major playhouses in London. He was artistic director of the Mermaid Theatre and inaugurated the British Theatre Season in Monaco, which was awarded a Royal Warrant by Prince Albert of Monaco.