Sinop Province (; , Sinopi) is a province of Turkey, along the Black Sea. It is located between 41 and 42 degrees North latitude and between 34 and 35 degrees East longitude. The surface area is 5,862 km², equivalent to 0.8% of Turkey's surface area. The borders total 475 km and consists of 300 km of land and 175 km seaside borders. Its adjacent provinces are Kastamonu on the west, Çorum on the south, and Samsun on the southeast. The provincial capital is the city of Sinop.