Changyang Tujia Autonomous County (simplified Chinese: 长阳土家族自治县; traditional Chinese: 長陽土家族自治縣; pinyin: Chángyáng Tǔjiāzú Zìzhìxiàn) or in Tujia language known as Changryangf Bifzivkar Zivzirxianf is an autonomous county in western Hubei province, People's Republic of China.

The county is located in the basin of the Qing River, a right tributary of the Yangtze.

The resulting reservoirs provide the main water transportation route throughout much of the county.

Established in 1984 with a surface area of 3,412 square kilometres (1,317 sq mi) and a population in 1984 of 399,000 inhabitants, of which 295,000 were Tujia.

The China National Highway 318, and the newly constructed Shanghai-Chongqing Expressway (G50) run roughly parallel to the railway.