Harp Star (Japanese: ハープスター, foaled 24 April 2011) is a Japanese Thoroughbred racehorse. She was one of the leading two-year-old fillies in Japan in 2013 when she won the Niigata Nisai Stakes and was narrowly beaten in the Hanshin Juvenile Fillies. In the following year she won the Tulip Sho and the Oka Sho before rebounding from a surprise defeat in the Yushun Himba to beat Gold Ship in the Sapporo Kinen.