| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| The Goat | grey | f | 1892 | Thoroughbred | Great Britain | |||
| The Golden Girl | f | Thoroughbred | ||||||
| The Golden Horn | chestnut | f | 1855 | Harkaway | Little Red Rover mare | Thoroughbred | Great Britain | |
| The Gorgon | bay | f | 1897 | Thoroughbred | Great Britain | |||
| The Grand Duke | c | Thoroughbred | ||||||
| 0551-4 The Great Gatsby | bay | c | 2000 | Sadler's Wells | Ionian Sea | Thoroughbred | Ireland | |
| The Heater | grey | f | 1949 | Thoroughbred | USA | |||
| The Heiress | f | 1842 | Thoroughbred | Great Britain | ||||
| 0598-4 The Honorable | chestnut | c | 2001 | Highest Honor | The Blade | Thoroughbred | France | |
| The In-Laws | chestnut | f | 1994 | Be My Guest | Amboselli | Thoroughbred | Ireland |