Leading Sires of 2005 Grade I Stakes Winners
(through 31 December 2005)
| Rank | Stallion | Sire | Location | SWs |
| 1 | DANEHILL | DANZIG | DEAD | 9 |
| 2 | GIANT'S CAUSEWAY | STORM CAT | KY | 4 |
| 3 | DISTORTED HUMOR | FORTY NINER | KY | 3 |
| KINGMAMBO | MR. PROSPECTOR | KY | 3 | |
| LINAMIX | MENDEZ | FRA | 3 | |
| MONTJEU | SADLER'S WELLS | IRE | 3 | |
| PIVOTAL | POLAR FALCON | ENG | 3 | |
| SADLER'S WELLS | NORTHERN DANCER | IRE | 3 | |
| SINGSPIEL | IN THE WINGS | ENG | 3 |