The Central District of Osku County (Persian: بخش مرکزی شهرستان اسکو) is a district (bakhsh) in Osku County, East Azerbaijan Province, Iran. At the 2011 census, its population was 69,116. The District has two cities: Osku and Sahand. The District has three rural districts (dehestan): Bavil Rural District, Gonbar Rural District, and Sahand Rural District.