Johnny Murtagh (born 14 May 1970) is an Irish flat racing trainer and former jockey from Bohermeen, near Navan, Kells, County Meath. As a jockey he won many of the major flat races in Europe, including all the Irish Classics, all the Group 1 Races at Royal Ascot, The Derby, the King George VI and Queen Elizabeth Diamond Stakes and Europe's biggest race the Prix de l'Arc de Triomphe. He was also Irish flat racing Champion Jockey five times. As a trainer, based at stables near Kildare, he has saddled a winner at Royal Ascot and an Irish Classic winner.