Assiniboia West was a federal electoral district in the North-West Territories, Canada, that was represented in the House of Commons of Canada from 1886 to 1908.
This riding was created in 1886. When the provinces of Alberta and Saskatchewan were created in 1905, this district, with territory in both new provinces, continued to represent them until it was abolished in 1907. It was redistributed into Battleford, Medicine Hat, Moose Jaw, Regina, and Saskatoon ridings.