| Istanbul Governor's Office | |
| Native Name: | İstanbul Vilayet Konağı |
| Map Type: | Istanbul Fatih |
| Location: | Cağaloğlu, Fatih |
| Location City: | Istanbul |
| Location Country: | Turkey |
| Coordinates: | 41.0119°N 28.9761°W |
| Destruction Date: | --> |
| Unit Count: | --> |
Istanbul Governor's Office (tr|İstanbul Vilayet Konağı) is the seat of the Governor of Istanbul Province. It is located at Cağaloğlu quarter of Fatih district of Istanbul, Turkey. It was the headquarters of the Ottoman Government, called the Sublime Porte, until the establishment of the Republic.