Picaroon (1922–1926) was a British Thoroughbred racehorse. He was the leading British two-year-old colt of his generation, winning all three of his races in 1924 including the and the Middle Park Stakes recording victories over Manna and Solario in the process. In the following spring he won the Craven Stakes and was favourite for the 2000 Guineas and The Derby but then began to suffer from leg problems which ruled him out of both races. He returned in autumn to finish fourth in the St Leger and then won his last four races including the Champion Stakes. He remained in training in 1926 but his leg problems intensified and he was euthanised at the age of four.