Shimian County (Chinese: 石棉县; pinyin: Shímián Xiàn; lit.

'Asbestos county'; Yi: ꏂꂴꑤ shy miep xiep; Tibetan: ཧྲི་མན་རྫོང, Wylie: hri man rdzong) is both the southernmost and westernmost county in the prefecture-level city of Ya'an, Sichuan Province, China.

The county seat, Miancheng Subdistrict (棉城街道), and the neighboring town, Xinmian (新棉镇), are often together referred to as Shimian.

[3] The G5 Beijing–Kunming Expressway now passes through Shimian along the route between Kunming and Chengdu.

[4] The county is located at the eastern edge of the Hengduan Mountains and surrounds the Dadu River.