91 (2016 population: 324) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No.

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

[4] Maryfield holds an annual indoor rodeo in July.

91 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 Cameron Thompson while its administrator is Daphne Brady.