Chengguan District (城关区) is one of 5 districts of the prefecture-level city of Lanzhou, the capital of Gansu Province, China. It is located mostly on the southern side of the Yellow River, and includes the downtown Lanzhou. Both the Gansu provincial government capitol and that of Lanzhou prefecture-level city are located within the district. The Lanzhou Railway Station is also located in this district.
Chengguan has a population of over 1,319,100 people. Chengguan also forms part of the wider Lanzhou metropolitan area which has a population of over 3,120,000 people.