Hamburg (1895–1915) was an American Thoroughbred race horse. The leading American colt of his generation, Hamburg was retrospectively named the American Horse of the Year for 1898. After his racing career he went on to be a successful sire.

Hanover (1884–1899) was a champion American Thoroughbred racehorse, who won his first 17 races. He was the last American stallion to be the leading sire in North America for four consecutive years until Bold Ruler achieved the feat in 1965.