40 (2016 population: 281) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

40 incorporated as a rural municipality on January 1, 1913.

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

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

[3] The reeve of the RM is Eugene Hoffart while its administrator is Lara Hazen.