Yanshan County (simplified Chinese: 砚山县; traditional Chinese: 硯山縣; pinyin: Yànshān Xiàn; Zhuang: Yensanh Yen) is under the administration of the Wenshan Zhuang and Miao Autonomous Prefecture, in the southeast of Yunnan province, China.

In the present, Yanshan County has 4 towns 3 townships and 4 ethnic townships.

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