Kaiyun

Kaiyun may refer to:


 * Kaiyun Town (开云镇), a town of Hengshan County, Hunan.

Historical eras

 * Kaiyun (開運, 944–946), era name used by Shi Chonggui, emperor of Later Jin (also used by concurrent rulers of Chu (Ten Kingdoms), Wuyue and Jingnan)
 * Kaiyun (開運, 1034), era name used by Emperor Jingzong of Western Xia