Nujiang Lisu Autonomous Prefecture (simplified Chinese: 怒江傈僳族自治州; pinyin: Nùjiāng Lìsùzú Zìzhìzhōu) is an autonomous prefecture of Yunnan. It is named after the Nujiang river (the longest undammed river in South-east Asia) and the Lisu ethnic group. The seat of the prefecture is Liuku town, Lushui county. Nujiang has an area of 14,703 km².