The Rural Municipality of Wolseley No. 155 (2016 population: ) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 5 and Division No. 1. it is located in the southeast portion of the province.
The RM of Wolseley No. 155 incorporated as a rural municipality on December 13, 1909.
Wolf Creek flows through the RM. The narrowleaf water plantain (alisma gramineum), tall larkspur (delphinium glaucum), and common butterwort (pinguicula vulgaris) are species of special concern in this area.
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 Wolseley No. 155 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 Wolseley No. 155 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 Wolseley No. 155 is governed by an elected municipal council and an appointed administrator that meets on the third Monday of every month. The reeve of the RM is Bev Kenny while its administrator is Rose Zimmer. The RM's office is located in Wolseley.
Highway 1 (the Trans-Canada Highway) bisects the RM.