243 (2016 population: 852) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

243 incorporated as a rural municipality on December 11, 1911.

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

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

[3] The reeve of the RM is Garry Liebrecht while its administrator is Gerry Burym.