Gulang County (Chinese: 古浪县; pinyin: Gǔlàng Xiàn) is a county in central Gansu province, China, bordering Inner Mongolia to the northeast.

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.

[1] Evidence has been found of Gulang being inhabited 4000 years ago, during the Neolithic.

Between 14 and 18 November 1936 the Battle of Gulang was fought between the Red Army and the Ma clique.

[4] Gulang County is divided to 15 towns and 4 townships.