Gulang County (Chinese: 古浪县; pinyin: Gǔlàng Xiàn) is a county in central Gansu province, the People's Republic of China, bordering Inner Mongolia to the northeast. It is under the administration of Wuwei City. Its postal code is 733100, and its population in 2006 was 393,200 people. Located in the east of the Hexi Corridor and to the south of the Tengger Desert, it borders Jingtai County to the east, Tianzhu County to the south, Liangzhou District to the northwest, and Inner Mongolia's Alxa Left Banner to the northeast.