Nellie Flag (1932–1953) was an American Thoroughbred racehorse who was retrospectively named the American Champion Two-Year-Old Filly of 1934.
[1] She was the first horse bred by Warren Wright's Calumet Farm to win a stakes race.
[2] An early favorite, Nellie Flag finished fourth in the 1935 Kentucky Derby[3] and seventh in the Preakness Stakes, the latter a race won by her dam in 1924.
[4] Following an injury, Nellie Flag was retired in mid July 1935 [5] and stood at Calumet Farm as a broodmare where she died in 1953 at age twenty-one.
She produced ten foals of which nine raced.