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 from its 2016 population of 10. With a land area of , it had a population density of in 2021.
Past hamlet board members included: