Last Mountain is a former provincial electoral district for the Legislative Assembly of the province of Saskatchewan, Canada. Centered on the town of Strasbourg, it included the northern half of Last Mountain Lake.
This constituency was created for the 2nd Saskatchewan general election in 1908. It was dissolved and combined with the Touchwood district (as Last Mountain-Touchwood) before the 18th Saskatchewan general election in 1975.
A federal electoral district in the same area existed from 1914 to 1935.