The Rural Municipality of Brock No. 64 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 1 and Division No. 1. It is located in the southeast portion of the province.
The RM of Brock No. 64 incorporated as a rural municipality on December 12, 1910.
The following urban municipalities are surrounded by the RM.
The following unincorporated communities are located within the RM.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Brock No. 64 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 Brock No. 64 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 Brock No. 64 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 Paul Cameron while its administrator is Miranda Debusschere. The RM's office is located in Kisbey.