The Chiaming Lake (Chinese: 嘉明湖; pinyin: Jiāmíng Hú; Bunun：Cidanuman Buan (mirror of the moon)) is a lake in Haiduan Township, Taitung County, Taiwan.

In Bunun language, Chiaming Lake is called "cidanuman buan", meaning "Mirror of the moon"; in Taiwan, it is traditionally referred as "Angel's teardrop" or, due to its deep blue color, "God's lost sapphire".

The lake was formed by glacial movement during the ice age.

[1] The forest authority closed the mountain area for maintenance and restoration works on 10 December 2014 until 31 March 2015.

[5] The area surrounds the lake has lodges and hiking trail with a length of 13 km.