Oka (ōˈkə) [key], village, S Que., Canada, on the north shore of the Lake of the Two Mountains (a widening of the Ottawa) and SW of Montreal. It is noted as the site of a Trappist monastery and farm (est. 1881), where Oka cheese is made. An agricultural institute there is affiliated with the Univ. of Montreal. About 600 Native Americans live at Oka.