J. Ivan "Jimmy" Menzies (1896 – 19 April 1985) was an English singer and actor, best known for his performances in the comic baritone roles of the Savoy Operas with the D'Oyly Carte Opera Company in Britain in the 1920s and the J. C. Williamson Gilbert & Sullivan Opera Company in Australia the 1930s and 1940s. Menzies married a D'Oyly Carte principal soprano, Elsie Griffin, but he left her repeatedly to go on extensive tours in Australia and New Zealand. Later, Menzies became a leader of the Moral Re-Armament movement in Australia and Britain, and he continued to perform on stage until 1962.