Martinson's Beach is a hamlet in the Canadian province of Saskatchewan. It is on the western shore of Jackfish Lake in the Rural Municipality of Meota No. 468.
In the 2021 Census of Population conducted by Statistics Canada, Martinson's Beach had a population of 49 living in 22 of its 65 total private dwellings, a change of -2% from its 2016 population of 50. With a land area of 0.12 km2 (0.046 sq mi), it had a population density of 408.3/km2 (1,057.6/sq mi) in 2021. [1]