Cai Prefecture

{{Short description|Historical administrative division in Henan, China}}

{{chinese|c={{linktext|蔡|州}}|p=Cài Zhōu|w=Ts'ai⁴ Chou¹}}

Caizhou or Cai Prefecture was a zhou (prefecture) in imperial China in modern Henan, China, seated in modern Runan County. It existed (intermittently) from 606 until 1293.

Caizhou was the location of the Siege of Caizhou, the last major battle of the Mongol conquest of the Jin dynasty, which took place in 1233.{{cite book |first = Frederick W. |last = Mote |title = Imperial China: 900–1800 |year=1999 |publisher = Harvard University Press |isbn = 0-674-44515-5 |id = (hardcover); {{ISBN|978-0-674-01212-7}} (paperback) }}