Last Mountain Lake 80A is a shared Indian reserve in Saskatchewan, used by the Day Star, George Gordon, Kawacatoose, Muscowpetung, Muskowekwan, Pasqua, and Piapot First Nations.

[1][2] It is in Township 21, Range 21, west of the Second Meridian.

The reserve is located on the western shore of Last Mountain Lake,[3] on the west side of Regina Beach.

It surrounds Little Arm Bay,[4] which is where Arm River flows into the lake.

This article about an Indian reserve in Saskatchewan is a stub.