Korucuk is a neighbourhood of the city Sinop of Sinop Province, Turkey. Its population is 3,080 (2022). It is situated only 3 kilometres (1.9 mi) west of the isthmus where the city of Sinop situated. It is so close to Sinop that it is about to merge to the city. A part of Sinop University as well as the bus terminal of Sinop are in Korucuk.