Chaka Salt Lake (Chinese: 茶卡盐湖; pinyin: Chákǎ Yánhú; Standard Tibetan: ཚྭ་ཁ་མཚོ་) is a salt lake in Ulan County, Haixi Prefecture, Qinghai, China.

[1][2] The oval-shaped lake is located near the eastern end of Qaidam Basin, 298 kilometres (185 mi) to the west of the provincial capital Xining.

[3] The name "Chaka" (ཚྭ་ཁ) means "salt lake" in Tibetan.

[4] Chaka Lake is a major tourist destination and a key salt mine in Qinghai.

[3][5] The lake is famous for its crystal-blue water and reflective lake bed, and is popularly known as "Mirror of the Sky".