Chenggu County (Chinese: 城固; pinyin: Chénggù) is a county of Hanzhong, in the southwest of Shaanxi province, China.

Unique archaeological evidence on contacts with Xingan culture (Jiangxi) was found there at Sucun.

As 2019, Chenggu County is divided to 2 subdistricts, 15 towns and 1 other.

[1] Chenggu is served by the Yangpingguan–Ankang Railway.

This Shaanxi location article is a stub.