Dayjur (6 February 1987 - 25 September 2013) was an American-bred, British-trained Thoroughbred racehorse. A specialist sprinter he ran eleven times between June 1989 and October 1990 and won seven races. In 1990 he dominated European sprinting, winning the King's Stand Stakes' the Nunthorpe Stakes, the Ladbroke Sprint Cup and the Prix de l'Abbaye de Longchamp. On his final racecourse appearance he finished second to Safely Kept in the Breeders' Cup Sprint.