Coteau Beach (2021 population: 170) is a resort village in the Canadian province of Saskatchewan within Census Division No.

It is on the western shore of the Thompson Arm of Lake Diefenbaker in the Rural Municipality of Coteau No.

Coteau Beach incorporated as a resort village on August 1, 1982.

[5] The Resort Village of Coteau Beach is governed by an elected municipal council and an appointed administrator.

[3] The mayor is Jeff Sopczak and its administrator is Steven Piermantier.