Welcome to Official website of Islamic Association of Sault Ste. Marie ON, Canada. This website provide information for the local community living in the vicinity. Sault Ste. Marie is a city in Ontario, Canada. It’s on the St. Mary’s River, north of the U.S. border, near 3 of the Great Lakes. It is the seat of the Algoma District and the third largest city in Northern Ontario, after Sudbury and Thunder Bay.