The Chenyoulan River or Chenyulan River (Chinese: 陳有蘭溪; Pe̍h-ōe-jī: Tân-iú-lân-khe) is a river in Nantou County, Taiwan. It is a tributary of the Zhuoshui River. Villages in the water shed include Dongpu and Fengqui. Its tributary streams are Junkeng, Shibachong, Shalixian, Heshe and Neimaopu Streams. The catchment area is 450 m and its length is 42.4 km. The average slope is 5%. The upper reaches drain the north slopes of Yushan up to 3910 metres elevation. The path of the river has been set by the Chenyulan fault.