The Rural Municipality of Lake of the Rivers No. 72 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 3 and Division No. 2. It is located in the southwest portion of the province.
The RM of Lake Of The Rivers No. 72 incorporated as a rural municipality on December 11, 1911.
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are within the RM.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Lake of the Rivers No. 72 had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
In the 2016 Census of Population, the RM of Lake of the Rivers No. 72 recorded a population of living in of its total private dwellings, a change from its 2011 population of . With a land area of , it had a population density of in 2016.
The RM of Lake of the Rivers No. 72 is governed by an elected municipal council and an appointed administrator that meets on the second Friday of every month. The reeve of the RM is Norm Nordgulen while its administrator is Shanese Mielke. The RM's office is located in Assiniboia.
The Assiniboia Airport is located in the rural municipality.