Mohr's Beach is a hamlet in the Canadian province of Saskatchewan. It is on the eastern shore of Last Mountain Lake in the Rural Municipality of McKillop No. 220. Access is from Highway 322.
In the 2021 Census of Population conducted by Statistics Canada, Mohr's Beach had a population of 15 living in 8 of its 18 total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.