| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| 0054-2 Achara | bay | f | 1989 | 3437-1 Rom | 4927 Azartnaya | Thoroughbred | Kullar Stud | |
| 1412-7 Achernar | chestnut | c | 2010 | 250259806003793 | Lemon Drop Kid | Ikat | Thoroughbred | USA |
| Acheron | black | c | 1829 | Thoroughbred | Great Britain | |||
| 3996-6 Achi Bonakkorsi | d.-bay | f | 2009 | 643110000212522 | Arch | Conquestress | Thoroughbred | USA |
| Achievement | br. | f | 1864 | Stockwell | Paradigm | Thoroughbred | Great Britain | |
| 1772-7 Achill | bay | c | 2012 | 643090000218033 | Flower Alley | Enterprise Beach | Thoroughbred | Lickity Split Services |
| Achillea | f | 1978 | Klondyke Bill | Reckless Lady | Thoroughbred | France | ||
| Achilles Way | chestnut | c | 2008 | Forest Wildcat | Unbridled Sea | Thoroughbred | USA | |
| Achin | bay | c | 2012 | 643094100237109 | 0625-4 Cherry Mix | 1601-4 Avva | Thoroughbred | Voskhod Stud |
| Aching Back | bay | f | 1944 | War Admiral | Drowsy | Thoroughbred | USA |