Dylan Mouth (foaled 13 March 2011) is an Irish-bred, Thoroughbred racehorse who was trained in Italy and England. After winning both of his races as a juvenile he improved to become the best horse of his generation in Italy, taking the Premio Emanuele Filiberto, Derby Italiano Premio Federico Tesio and Gran Premio del Jockey Club. In 2015 he won the Premio Carlo d'Alessio, Gran Premio di Milano, Premio Federico Tesio and Premio Roma. After being transferred to race in England in 2106 he won a second Gran Premio di Milano but failed to reproduce his best form in his subsequent races that year. He went on to win the Old Newton Cup in 2017 and the John Smith's Silver Cup Stakes in 2018 before being retired to stud.