Galatea (also known as Galatea II; 1936–1949) was a French-bred, British-trained Thoroughbred racehorse and broodmare, best known for winning two Classics in 1939. The filly won three times from six races in a racing career which lasted from 1938 until June 1939. After failing to win as a two-year-old she won her first three races of 1939 including the 1000 Guineas over one mile at Newmarket and the Epsom Oaks over one and a half miles at Epsom Downs Racecourse a month later. She was beaten in her only subsequent race and was retired to stud, where she had some success as a broodmare.