North Cowichan is a district municipality established in 1873 on Vancouver Island, in British Columbia, Canada. The municipality is part of the Cowichan Valley Regional District. North Cowichan is noted for a landscape including forests, beaches, rivers, and lakes. The municipality encompasses the communities of Chemainus; Westholme; Crofton; Maple Bay; and "the South End". The latter is an informal name for a built-up area which is essentially a suburb of the City of Duncan, a separate municipality.

The Cowichan Valley Regional District is a regional district in the Canadian province of British Columbia that is on the southern part of Vancouver Island, bordered by the Nanaimo and Alberni-Clayoquot Regional Districts to the north and northwest, and by the Capital Regional District to the south and east. As of the 2021 Census, the Regional District had a population of 89,013. The regional district offices are in Duncan.