Brown Betty (known in the United States as Brown Betty II, 1930 – after 1937) was a British Thoroughbred racehorse and broodmare. She was one of the best of an exceptional crop of juvenile fillies in 1932 when she won her last four races including the Cheveley Park Stakes. In the following spring he recorded her biggest victory when she took the 1000 Guineas. She ran disappointingly when fourth in the Epsom Oaks but went on to win the Richemount Stakes and finished second in both the Nassau Stakes and the Park Hill Stakes. She was retired from racing at the end of her second season and exported to become a broodmare in the United States.