| Mikołaj Sieniawski | |
| Field Crown Hetman | |
| Coa: | Leliwa |
| More: | no |
| Noble Family: | Sieniawski |
| Father: | Mikołaj Sieniawski |
| Birth Date: | 1520 |
| Death Date: | 1584 |
Mikołaj Sieniawski (1520–1584) was a Polish magnate, military commander, Field Hetman of the Crown in 1562–64 and 1575–76.