Yunzhou or Yun Prefecture was a zhou (prefecture) in imperial China in modern southwestern Shandong, China. It existed (intermittently) from 590 to 1109.
Shi Weile, ed. (2005). Zhongguo Lishi Diming Da Cidian (中国历史地名大词典) [Large Dictionary of Chinese Historical Place Names] (in Chinese). China Social Sciences Press. p. 1706. ISBN7-5004-4929-1.