| Nasrullah Mosque | |
| Map Type: | Turkey |
| Location: | Kastamonu, Turkey |
| Coordinates: | 41.3772°N 33.7753°W |
| Region: | Black Sea Region |
| Religious Affiliation: | Sunni Islam |
| Province: | Kastamonu Province |
| Functional Status: | Active |
| Architecture: | yes |
| Architecture Type: | mosque |
| Architecture Style: | Ottoman architecture |
| Year Completed: | 1506 |
| Specifications: | yes |
| Minaret Quantity: | 2 |
Nasrullah Mosque (tr|Nasrullah Cami) is a 16th-century Ottoman mosque in Kastamonu, Turkey.
It is located in Kastamonu just west of the Kastamonu Governor's Office and Gök River.
The mosque was commissioned by Kadı Nasrullah, a judge of the Ottoman Empire. It was built in 1506, during the reign of Sultan Bayazid II. The building underwent restorations in 1746, 1845 and 1945.[1]
The mosque has nine domes over six square columns each with the dimensions of 1.6x. The narthex (tr|son cemaat yeri) has seven domes over ten columns. The pretentious public fountain (tr|[[shadirvan|şadırvan]]) of the mosque is in the courtyard to the north of the mosque. The mosque has two minarets.