Kuandian Manchu Autonomous County (simplified Chinese: 宽甸满族自治县; traditional Chinese: 寬甸滿族自治縣; pinyin: Kuāndiàn Mǎnzú Zìzhìxiàn; Manchu: ᡴᡠᠸᠠᠨᡩᡳᠶᠠᠨ ᠮᠠᠨᠵᡠ ᠪᡝᠶᡝ ᡩᠠᠰᠠᠩᡤᠠ ᠰᡳᠶᠠᠨ; Möllendorff: kuwandiyan manju beye dasangga siyan), is a county of eastern Liaoning province, China, bordering North Korea to the southeast and Jilin in the northeast.

It is under the administration of Dandong City, the centre of which lies 75 kilometres (47 mi) to the southwest, and is served by China National Highway 201.

[3] In 1467, the Ming Dynasty built a defensive wall in the eastern part of the region that terminated at the Yalu River.

[3] The area belonged to Fengtian Province [zh] (奉天省) during the early days of the Republic of China.

Domestically, it borders Ji'an (Jilin) to the northeast, Fengcheng to the west, Benxi to the northwest, and Huanren County to the north.

Due to the mountainous location, temperatures tend to be cooler, and summer rainfall is heavier.

In 1949, the year the People's Republic of China was proclaimed, 1.8% of the county's population lived in urban areas.

[8] Kuandian's mineral deposits include boron, iron, lead, zinc, coal, copper, magnesite, and talc.