Leading Sires of 2015 Grade I Stakes Winners
(through 31 December 2015)
| Rank | Stallion | Sire | Location | SWs |
| 1 | GALILEO | SADLER'S WELLS | IRE | 9 |
| 2 | DUBAWI | DUBAI MILLENNIUM | ENG | 7 |
| 3 | TAPIT | PULPIT | KY | 5 |
| 4 | BERNARDINI | A.P. INDY | KY | 4 |
| KING KAMEHAMEHA | KINGMAMBO | JPN | 4 | |
| 6 | CURLIN | SMART STRIKE | KY | 3 |
| DEEP IMPACT | SUNDAY SILENCE | JPN | 3 | |
| DUKE OF MARMALADE | DANEHILL | IRE | 3 | |
| DYLAN THOMAS | DANEHILL | IRE | 3 | |
| FASTNET ROCK | DANEHILL | IRE | 3 | |
| HARD SPUN | DANZIG | KY | 3 | |
| KITTEN'S JOY | EL PRADO | KY | 3 | |
| STREET SENSE | STREET CRY | KY | 3 | |
| WAR FRONT | DANZIG | KY | 3 | |