Croydon Youth Theatre Organisation, often referred to simply as CYTO, is a professionally led youth theatre group based at the Shoestring Theatre in South Norwood, Croydon in South London, England. CYTO was founded in 1965, following a visit by Marjorie Taylor, a Youth Service officer for Croydon Council, to the Youth Theatre at Southbourne in Dorset. Having gained the approval of her bosses at the Council, Taylor approached a local amateur dramatics group, the Croydon Histrionic Society, a leading member of which, R Willis Hole, chaired a working party to set the project up. The organisation was launched in the Croydon Advertiser of 10 September 1965, with opening night on 21 September.