Kaiyun may refer to:
- Kaiyun Town (开云镇), a town of Hengshan County, Hunan.
Historical eras
edit- 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