The Rural Municipality of Morris No. 312 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 11 and Division No. 5.
The RM of Morris No. 312 incorporated as a rural municipality on December 13, 1909.
Notable geographical features in the RM include Little Manitou Lake, Zelma Reservoir, and the Allan Hills.
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are within the RM.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Morris No. 312 had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021.
In the 2016 Census of Population, the RM of Morris No. 312 recorded a population of living in of its total private dwellings, a change from its 2011 population of . With a land area of , it had a population density of in 2016.
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. The reeve of the RM is Keith Thoner while its administrator is Belinda Rowan. The RM's office is located in Young.