| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Added Attraction | bay | f | 1967 | Double Jay | Sea Nurse | Thoroughbred | USA | |
| Added Elegance | chestnut | f | 1984 | Stutz Blackhawk | Thoroughbred | USA | ||
| Addenda | f | 1910 | Spearmint | Admiration | Thoroughbred | Great Britain | ||
| Adderly | chestnut | f | 1892 | Ayrshire | Sandiway | Thoroughbred | Great Britain | |
| Addis Abeba | bay | f | 1949 | Thoroughbred | Germany | |||
| 849 Addition | d.-bay | f | 1941 | Ferro | Aditija | Thoroughbred | ||
| Addition | br. | f | 1946 | Thoroughbred | New Zeland | |||
| Addolorata | bay | f | 1964 | Abdos | Santa Theresa | Thoroughbred | France | |
| Adds Up | bay | f | 1960 | Sub Fleet | In Hopes | Thoroughbred | USA | |
| Addy Bell | bay | f | 1882 | Thoroughbred | Great Britain |