| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Tweed | chestnut | f | 1923 | Tut She | Thoroughbred | Great Britain | ||
| Tweedling | d.-bay | f | 1981 | Sir Ivor | Fiddlesticks | Thoroughbred | USA | |
| Tweeny | d.-bay | f | 1929 | St. Germans | Untidy | Thoroughbred | USA | |
| Tweet Tweet | bay | f | 1928 | Sir Gallahad III | Bobolink | Thoroughbred | USA | |
| Tweeter | chestnut | f | 2006 | Unbridled's Song | Dear Birdie | Thoroughbred | USA | |
| Twelfth Cake | bay | f | 1871 | Orest | Yule Cake | Thoroughbred | Great Britain | |
| Twelve O'Clock | f | Hardicanute | Midnight Chimes | Thoroughbred | ||||
| Twen | bay | c | 1991 | Konigsstuhl | Thea | Thoroughbred | Germany | |
| Twenty Eight Carat | chestnut | f | 1990 | Alydar | Voo Doo Dance | Thoroughbred | USA | |
| Twice Blessed | bay | f | 1956 | Tulyar | Phase | Thoroughbred | Great Britain |