312 (2016 population: 290) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

[2] Notable geographical features in the RM include Little Manitou Lake, Zelma Reservoir, and the Allan Hills.

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

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

[3] The reeve of the RM is Keith Thoner while its administrator is Belinda Rowan.