Boisbriand is an off-island suburb of Montreal, in southwestern Quebec, Canada, on the north shore of the Rivière des Mille Îles in the Thérèse-De Blainville Regional County Municipality.

Kiryas Tosh, also called Tash, is a Hasidic Jewish community in the town of Boisbriand, Quebec. It is affiliated with the Tosh Hasidic dynasty. The community is home to about 550 households, or about 3,100 people.