| Type: | Archbishop |
| Honorific-Prefix: | His Excellency |
| Mikolaj Prażmowski | |
| Church: | Roman Catholic |
| Archdiocese: | Gniezno |
| Coat Of Arms: | POL COA Belina.svg |
| Coat Of Arms Alt: | Episcopal coat of arms of Archbishop Mikolaj Prażmowski, |
| Birth Date: | 1617 |
| Death Place: | Ujazdów |
| Nationality: | Polish |
Mikołaj Jan Prażmowski (1617 - 15 April 1673) was the archbishop of Gniezno and primate of Poland from 1666. He was Interrex from 1668 to 1669.[1]
He was born in Prażmów.[2] He was bishop of Łuck from 1659, and bishop of Warmia from 1664. He was previously chancellor in 1658-1666 Grand Crown Secretary, Crown Deputy Chancellors from 1658, Grand Secretary of the Crown, Grand Secretary of the Crown from 1652.[3] He died in Ujazdów