Kaiyun may refer to:

Kaiyun Town (开云镇), a town in Hengshan County, Hunan, China

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