Xiuyan Manchu Autonomous County (simplified Chinese: 岫岩满族自治县; traditional Chinese: 岫岩滿族自治縣; pinyin: Xiùyán Mǎnzú Zìzhìxiàn) is a county in the southeast of Liaoning province, People's Republic of China, and is also one of the 11 Manchu autonomous counties and one of 117 autonomous counties nationally. It is under the administration of and occupies the southernmost portion of Anshan, the centre of which 136 kilometres (85 mi) to the north-northwest, and has a population of 500,000.