342 (2016 population: 269) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

342 incorporated as a rural municipality on December 13, 1909.

In the 2021 Census of Population conducted by Statistics Canada, the RM of Colonsay No.

342 is governed by an elected municipal council and an appointed administrator that meets on the second Wednesday of every month.

[3] The reeve of the RM is Gerald Yausie while its administrator is Randi Wood.