The Rural Municipality of Leroy No. 339 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 10 and Division No. 5. It is located east of Saskatoon.
The RM of Roach No. 339 was originally incorporated as a rural municipality on January 1, 1913. Its name was changed to the RM of Ayr No. 339 on March 14, 1914 and then renamed again to the RM of Leroy No. 339 on February 27, 1931.
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 Leroy No. 339 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 Leroy No. 339 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 Leroy No. 339 is governed by an elected municipal council and an appointed administrator that meets on the second Wednesday of every month. The reeve of the RM is Calvin Buhs while its administrator is Wendy Gowda. The RM's office is located in Leroy.