Fred Karno, English producer and manager (d. 1941)
Frederick John Westcott (26 March 1866 – 17 September 1941), best known by his stage name Fred Karno, was an English theatre impresario of the British music hall. As a comedian of slapstick he is credited with popularizing the custard-pie-in-the-face gag. During the 1890s, in order to circumvent stage censorship, Karno developed a form of sketch comedy without dialogue.

Cheeky authority-defying playlets such as Jail Birds (1895) in which prisoners play tricks on warders and Early Birds (1899), showing the poverty and realities for the poor of London's East End, can be seen as precursors of movie silent comedy. Many of his comics subsequently worked in film and used Karno material throughout their work. Film producer Hal Roach stated: "Fred Karno is not only a genius, he is the man who originated slapstick comedy. We in Hollywood owe much to him."Among the music hall comedians who worked for him were Charlie Chaplin and his understudy, Arthur Stanley Jefferson, who later adopted the name of Stan Laurel. These were alumni of his comedy companies all of whom trained at his headquarters, The Fun Factory, in Vaughan Road, Camberwell. Such was Karno's fame that his name became associated with any chaotic situation, and the disorganised volunteer soldiers of the Great War labelled themselves "Fred Karno's Army", a phrase still occasionally used in the UK to refer to a chaotic group or organisation. The phrase was also adapted into a trench song in the First World War, to the tune of the hymn "The Church's One Foundation". In the Second World War it was adapted as the Anthem of the Guinea Pig Club, the first line becoming "We are McIndoe's Army ...". The song also appears in the 1969 comedy musical film Oh! What a Lovely War.