401 (2016 population: 675) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

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

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

401 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 Derreck Kolla while its administrator is Madsine Madsen.