Robert Armand René Michaelis (22 December 1878 – 29 August 1965) was a French-born actor and singer who worked in musical theatre, mainly in England, but he also made appearances on Broadway. By 1901, Michaelis and his parents had settled in Hampstead, and he was married there in 1913. He was naturalized as a British subject in 1914. After retiring from the stage, he became a manager, and during the Second World War was an air raid warden, by then having made his home in the west of England.