339 (2016 population: 502) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

339 was originally incorporated as a rural municipality on January 1, 1913.

In the 2021 Census of Population conducted by Statistics Canada, 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.

[4] The reeve of the RM is Calvin Buhs while its administrator is Wendy Gowda.