Little Manitou Lake is a small salt lake about 120 kilometres (75 mi) south-east of Saskatoon in the Canadian province of Saskatchewan. The lake was formed by receding glaciers during the most recent ice age. It is fed by underground springs and has a mineral content high in sodium, magnesium, and potassium salts due to it being a terminal lake. The salt content of the water (180 g/L) gives it a salinity about half of that of the Dead Sea (300-400 ppt), allowing bathers to float easily.

A salt lake or saline lake is a landlocked body of water that has a concentration of salts and other dissolved minerals significantly higher than most lakes. In some cases, salt lakes have a higher concentration of salt than sea water; such lakes can also be termed hypersaline lakes, and may also be pink lakes on account of their colour. An alkalic salt lake that has a high content of carbonate is sometimes termed a soda lake.