Category
page 1Undefeated racehorses
Eclipse
British Thoroughbred racehorse

Kincsem
Kincsem (; Hungarian for "My Precious" or "My Treasure"; March 17, 1874 – March 16, 1887) was a Hungarian Thoroughbred racehorse who has the longest undefeated record of any racehorse after winning all of her 54 races. The next closest in this regard is Black Caviar, who won all her 25 races. Foaled in Kisbér, Hungary in 1874, Kincsem is a national icon and widely considered one of the top racehorses of the 19th century.
Frankel
British Thoroughbred racehorse
Agnes Tachyon
Japanese Thoroughbred racehorse
Black Caviar
Australian horse
Highflyer
race horse
Flying Childers
horse
Maruzensky
Maruzensky (; May 19, 1974 – August 21, 1997) was an undefeated Japanese thoroughbred racehorse and sire.
St. Simon
thoroughbred racehorse
Nearco
Nearco (January 24, 1935 – June 27, 1957) was an Italian-bred Thoroughbred racehorse described by Thoroughbred Heritage as "one of the greatest racehorses of the Twentieth Century" and "one of the most important sires of the century." He was unbeaten, winning 14 races at distances from 1000m (5 furlongs) to 3000m (1 mile 7 furlongs), including the Derby Italiano and Grand Prix de Paris. He was then sold for a record amount to Martin H. Benson and stood stud in England, where he became the patriarch of several of the most dominant sire lines in Thoroughbred history.
Lammtarra
Lammtarra (2 February 1992 7 July 2014) was an American-bred, British-trained Thoroughbred racehorse. He ran only four times and retired undefeated. Lammtarra won three Group One races in 1995, in which year he was voted the Cartier Three-Year-Old European Champion Colt after winning the Derby in record time, the King and Queen Elizabeth Stakes and the Prix de l'Arc de Triomphe. He is one of only two horses to win all three races.
Ribot
British-bred Thoroughbred racehorse
Danzig
race horse