| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Transour | chestnut | f | 1939 | Transmute | Sourdine | Thoroughbred | USA | |
| Transparent | chestnut | f | 1946 | Hyperion | Invisible | Thoroughbred | Great Britain | |
| Transsylvania | bay | f | 1915 | Slieve Gallion | Transition | Thoroughbred | Austria | |
| 768 Transvaal | bay | f | 1933 | 27 Brimston | 169 Tribuna | Thoroughbred | Streletsk Stud | |
| Transvaal | bay | c | 1905 | Commando | Royal Rose | Thoroughbred | USA | |
| Transvaal 2 | c | 1921 | Tracery | Thoroughbred | ||||
| 2782 Transval | d.-bay | c | 1951 | 1214 Trade Wind | 2468 Slavnaya | Thoroughbred | Essentuki Stud | |
| Transversal | bay | f | 1904 | Galtee More | Krutzyata | Thoroughbred | ||
| Transworld | c | Prince John | Hornpipe II | Thoroughbred | ||||
| Tranzistor | bay | c | 1974 | 3241 Zgid | 4495 Tagira | Thoroughbred | Kommaiak Farm |