Gulang County (Chinese: 古浪县; pinyin: Gǔlàng Xiàn) is an administrative district in Gansu, the People's Republic of China. It is one of 58 counties of Gansu. It is part of the Wuwei prefecture, with the city of the same name being the prefecture seat. Its postal code is 733100, and its population in 2006 was 393,200 people.