Stanley is a rural municipality (RM) in the province of Manitoba in Western Canada. It is located in the southern part of the province, along its border with the state of North Dakota in the United States. Since 1876, the area made up part of the Mennonite West Reserve. The municipality has a population of 8,969 as of the 2016 Canada Census. The cities of Winkler and Morden lie geographically within the municipality but are separate urban municipalities.