The District of Lakeland No. 521 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 15 and Division No. 5.
The RM of Lakeland No. 521 was originally incorporated as a rural municipality on August 1, 1977. Its name was changed to the District of Lakeland No. 521 on June 1, 2011.
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 District of Lakeland No. 521 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 District of Lakeland No. 521 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 District of Lakeland No. 521 is governed by an elected municipal council and an appointed administrator that meets on the second Monday of every month. The reeve of the RM is Walter Plessl while its administrator is Tammy Knuttila. The RM's office is located in Christopher Lake.