This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.
This list includes racehorses that exist in the historical record.
Barbaro: 2006 Kentucky Derby winner whose racing career and life was cut short due to a life-ending injury[1]
Battleship (1927–1958) was an American thoroughbred racehorse who is the only horse to have won both the American Grand National and the Grand National steeplechase races.
Barbaro: American Thoroughbred who decisively won the 2006 Kentucky Derby, but shattered his leg two weeks later in the 2006 Preakness Stakes, ending his racing career; underwent several operations; eventually healed, but developed laminitis and could not be saved; euthanized January 29, 2007
Brigadier Gerard: winner of 17 of 18 races in England, including the 2000 Guineas and 11 other Group I races; joint third highest Timeform flat rating of all time
Buckpasser: won 15 consecutive races; one of the great broodmare sires
Buena Vista: Won 6 Grade I races, including two of the Japanese Triple Tiara in 2009
C
California Chrome
California Chrome: won the 140th Kentucky Derby; won the Preakness; won the 2016 Dubai World Cup; two-time American Horse of the Year
Cody's Wish: 2022 and 2023 Breeders' Cup Dirt Mile winner, 2023 American Horse of the Year named after the late Cody Dorman who was born with Wolf-Hirschhorn Syndrome, he lived a long life until he died from the same disease on November 6th 2023 after he suffered a medical event.
Danehill: American-bred and British-trained sprint champion who went on to become a champion sire in both the northern and southern hemispheres; the first major "shuttle stallion"
Daring Tact: Winner of the Japanese Triple Tiara in 2020
Dawn Run: only horse ever to complete Champion Hurdle, Cheltenham Gold Cup double
Deep Impact: Japanese Triple Crown winner; also smashed the world record over 3200 metres and seven-time leading sire in Japan
Desert Gold: race mare who won 19 races successive races during World War I; often raced against Gloaming
Desert Orchid: won King George four times and Cheltenham Gold Cup
Dr. Fager: "the Doctor"; set the world record at 1 mile on any surface, 1:32 1/5, and held it for more than 20 years. The only horse in American history who in 1968 won 'Racings Grand Slam'.
Dream Journey: Winner of 3 GI races, including the Takarazuka and Arima Kinen of 2009. Full brother of Orfevre.
Easy Goer: Hall of Fame champion who ran the fastest mile of all time on dirt by any three-year-old Thoroughbred in 1:32.2; ran the second fastest Belmont Stakes of all time behind Secretariat; had a great rivalry with Sunday Silence
Eclipse: celebrated 18th-century racehorse that won 18 races in 18 starts; influential sire
Nasrullah: one of the most successful Thoroughbred sires of the 20th century, grandsire to Secretariat
Native Dancer (also nicknamed the Grey Ghost): won 21 of 22 career races, with only loss in the Kentucky Derby; sire whose descendants have come to dominate modern Triple Crown racing
Nearco: Italian bred Thoroughbred racehorse. ''Thoroughbred Heritage'' described him as "one of the greatest racehorses of the Twentieth Century" and "one of the most important sires of the century." He was undefeated and his sire line was dominant.
Niatross: pacer who won 37 of his 39 races and broke many records, considered to be one of the greatest harness racers of all time
Nice Nature: Nick-named "The Silver Collector", Nice Nature became known for finishing third in the Arima Kinen for 3 years in a row, and post-retirement became the focus of a donation drive to help retired horses like himself
Real Quiet: winner of the 1998 Kentucky Derby and Preakness Stakes; lost the third leg of the U.S. Triple Crown, the Belmont Stakes, by a margin of four inches
Red Rum: only horse in the history of the Aintree Grand National to win the race three times (placed second on two other occasions)
Regret: first filly to win the Kentucky Derby (1915)
Secretariat: U.S. Triple Crown winner (1973); one of the most famous horses in Thoroughbred racing
Sham: The main competitor to Secretariat during the 1973 racing season
Shergar: winner of the 1981 Epsom Derby by a record 10 lengths, the longest winning margin in a race run annually since 1781; kidnapped by the IRA in 1983, and was held for ransom, but the owner syndicate refused to pay, fearing that valuable horses would become targets; the stallion was never found
Spectacular Bid: Hall of Fame champion who went undefeated as a four-year-old, and won 26 of 30 career starts
St Lite: The first horse to win the Triple Crown in Japan
Stay Gold: Dubbed "the Silver Collector" during his racing career; goes on to sire Orfevre, Gold Ship, and Oju Chosan
Steel Dust: 19th-century quarter-mile racing horse.[8]
Stellar Wind: Stellar Wind is an American Thoroughbred racehorse, known for her Eclipse Award winning three-year-old season, and later for her rivalry with the champion mare Beholder.
Still in Love: 2003 Japanese Fillies' Triple Crown winner
Storm Cat: one of the most successful U.S. sires of the late 20th century
St. Simon: Undefeated British racehorse and successful sire
Sunline: first Southern Hemisphere horse to top $10million in stakes earnings; three-time Australian (2000-2002); four-time New Zealand Horse of the Year (1999-2002); 13-time Group 1 winner
Swale: 1984 Kentucky Derby and Belmont Stakes winner, died eight days after the Belmont win
Symboli Kris S: Two time winner of the Arima Kinen, later sire of Epiphaneia
Symboli Rudolf: Winner of the 1984 Japanese Triple Crown, and the first horse to win the Triple Crown undefeated.
T M Opera O: Became the Japanese Horse of the Year for the 2000 season after he went undefeated in all 8 races that he participated in, becoming the highest earning racehorse at the time in the process.
Tokai Teio: Japanese Horse of the Year of 1991. After suffering multiple injuries including a broken leg, went on to win the 1993 Arima Kinen in the famous "Miracle Run".
Tokino Minoru: Undefeated Japanese racehorse who died from tetanus 17 days after winning the Japanese Derby in 1951
Voltigeur: Won the Derby and the St Leger in 1850 and beat The Flying Dutchman in the Doncaster Cup. In 1851 Voltigeur was beaten by The Flying Dutchman in what was probably the most celebrated match race in the history of British thoroughbred racing.
W
War Admiral
War Admiral: fourth U.S. Triple Crown winner (1937)
Zenno Rob Roy: The only horse since T M Opera O to have won the Autumn Tenno Sho, Japan Cup, and the Arima Kinen consecutively
Zenyatta: won 19 of 20 starts; first mare to win the Breeders' Cup Classic (2009); first to win two different Breeders' Cup races (Ladies' Classic in 2008, Classic in 2009)
^Kirsch, George B. (editor) (1995) "Smuggler vs. Goldsmith Maid, 1876" Sports in North America: A Documentary History, Volume 4: Sports in war, revival and expansion, 1860-1880 Academic International Press, Gulf Breeze, Florida, pp. 206-210, ISBN 0-87569-135-8
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