Leading Sires of 2019 Grade I Stakes Winners
(through 31 December 2019)
| Rank | Stallion | Sire | Location | SWs |
| 1 | GALILEO | SADLER'S WELLS | IRE | 9 |
| 2 | DEEP IMPACT | SUNDAY SILENCE | DEAD | 7 |
| 3 | SHAMARDAL | GIANT'S CAUSEWAY | IRE | 5 |
| 4 | FRANKEL | GALILEO | ENG | 4 |
| QUALITY ROAD | ELUSIVE QUALITY | KY | 4 | |
| 6 | DUBAWI | DUBAI MILLENNIUM | ENG | 3 |
| HARD SPUN | DANZIG | KY | 3 | |
| HEART'S CRY | SUNDAY SILENCE | JPN | 3 | |
| SEA THE STARS | CAPE CROSS | IRE | 3 | |