Masinasin is a ghost town and former community in Alberta, Canada within the County of Warner No. 5. It is located 1 km off Highway 501 on Range Road 133, approximately 31 km east of the Town of Milk
Postmaster Elizabeth Blust stands in Masinasin post office's doorway (c. 1934-1953). The building, a converted granary, served three postmasters.