Spring Bay is a hamlet in the Canadian province of Saskatchewan. It is on the eastern shore of Last Mountain Lake.
In the 2021 Census of Population conducted by Statistics Canada, Spring Bay had a population of 20 living in 13 of its 39 total private dwellings, a change of 100% from its 2016 population of 10. With a land area of 0.22 km2 (0.085 sq mi), it had a population density of 90.9/km2 (235.5/sq mi) in 2021.
Past hamlet board members included: