Yuncheng (simplified Chinese: 郓城; traditional Chinese: 鄆城; pinyin: Yùnchéng) is a county in the southwest of Shandong province, China, under the administration of Heze City. It borders the Yellow River and Henan (Taiqian County and Fan County) to the north, Liangshan County to the northeast, Jiaxiang County to the east, Juye County to the southeast, and Mudan District to the southwest, and Juancheng County to the west.