303 (2016 population: 390) 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 Keys No.

[4] The RM's office is located in the Town of Canora.

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

[3] The reeve of the RM is Garth Bates while its administrator is Barry Hvidston.