Nikoli (foaled 8 March 1977) was an Irish Thoroughbred racehorse and sire. After winning his only race as a juvenile he won the McCairns Trial Stakes on his three-year-old debut and then recorded his biggest win in the Irish 2000 Guineas. He started favourite for the 1980 Epsom Derby but finished seventh and ran poorly on his only subsequent start. After his retirement from racing he stood as a breeding stallion in the United States and Uruguay but had little success as a sire of winners.