Duan

Duan may refer to:


 * Duan (surname), a Chinese surname
 * Duan dynasty, the ruling dynasty of the Dali Kingdom
 * Duan tribe, pre-state tribe during the era of Sixteen Kingdoms in China
 * Duan language, spoken on the Laotian–Vietnamese border
 * Duan, mark of level in Chinese martial arts
 * Lê Duẩn, the General Secretary of the Communist Party of Vietnam from 1959 until his death in 1986, and leader of Vietnam from 1969 to 1986
 * Du'an Yao Autonomous County, in Guangxi, China
 * Zaiyi, Prince Duan (1856-1922), Manchu prince and statesman during the late Qing dynasty
 * Duan railway station, Paschim Medinipur district, West Bengal