The Municipality of Boissevain-Morton is a rural municipality (RM) in the Westman Region of the Canadian province of Manitoba.

[3] The Government of Manitoba initiated these amalgamations in order for municipalities to meet the 1997 minimum population requirement of 1,000 to incorporate a municipality.

[4] In the 2021 Census of Population conducted by Statistics Canada, Boissevain-Morton had a population of 2,309 living in 982 of its 1,141 total private dwellings, a change of -1.9% from its 2016 population of 2,353.

[2] The International Peace Garden is located on the southern boundary of the RM, the Canada–United States border opposite Rolette County, North Dakota.

Much of Turtle Mountain Provincial Park lies in the southwest corner of the RM.