Bairi (Tianzhu) Tibetan Autonomous County (Tibetan: དཔའ་རིས་བོད་རིགས་རང་སྐྱོང་རྫོང༌།, Wylie: dpa'a-ris bod-rigs rang-skyong rdzong/, ZYPY: Bairi Poirig Ranggyong Zong; Chinese: 天祝藏族自治县; pinyin: Tiānzhù Zàngzú Zìzhìxiàn) is in the prefecture-level city of Wuwei in the Chinese province of Gansu. It has an area of 7,147km² and approximately 230,000 inhabitants (2003).