| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Afterthought | bay | f | 1939 | Obliterate | Plack | Thoroughbred | Great Britain | |
| Afterthought | bay | f | 1927 | Mad Hatter | Remembrance | Thoroughbred | USA | |
| Afton | l.bay | c | 2005 | 0197-2 Freedom Run | 1641-4 Arheologiia | Thoroughbred | Dnepropetrovsk Stud | |
| Afula | bay | f | 2003 | 0408-3 Aragon | 2206-4 Floriana | Thoroughbred | Arhipovsky Farm | |
| 3901-6 Afweya | chestnut | f | 2010 | 985101045170849 | Jazil | Matiya | Thoroughbred | USA |
| Ag | chestnut | c | 1976 | 3119 Gerpegezh | 4164 Allel | Thoroughbred | Beslansk Stud | |
| 4920-1 Aga | bay | f | 1976 | 3154-1 Athens Wood | 3629 Adygeya | Thoroughbred | Maistrenko Stud | |
| 4921 Agaba | br. | f | 1975 | 3119 Gerpegezh | 3671 Atletika | Thoroughbred | Beslansk Stud | |
| Agadena | bay | f | 2010 | 643094100088318 | 0005-2 Agdam | 2346-4 Defema | Thoroughbred | Maistrenko Stud |
| Agades | bay | c | 1970 | 2329 Georgin | 3203 Angara | Thoroughbred | Kabardinsk Stud |