Rhoda (1813–after 1836) was a British Thoroughbred racehorse and broodmare who won the third running of the classic 1000 Guineas at Newmarket Racecourse in 1816 and was the most successful racehorse in Britain (in terms of wins) two years later. Rhoda was one of the most active of all British classic winners, running in at least forty-five contests between 1816 and 1820 and winning twenty-one times.