There are two kinds of regions in Canada: those formed at the national level and sometimes used for the Canadian Senate, and those used within the provinces and territories.
National regions
Although these regions have no official status or defined boundaries the Provinces and territories are sometimes informally grouped into the following regions (generally from west to east):
Other regions are: French Canada English Canada Arctic Canada (mostly Inuit -neither English nor French) Quebec City–Windsor Corridor
Seats in the Senate are equally divided among four regions: Maritimes, Quebec, Ontario, and the West, with special status for Newfoundland and Labrador, and Northern Canada ("the North").
Provincial regions
The provinces and territories are all sub-divided into regions for a variety of official and unofficial purposes. In some provinces, the regions are used for political purposes. In others, they are just geographic areas.
Alberta
Primary and secondary regions
Northern Alberta boreal forest
Peace River Country
Alberta's Rockies
Palliser's Triangle (Alberta portion) Southern Alberta Cypress Hills Calgary Region Edmonton Capital Region Central Alberta Calgary–Edmonton Corridor
British Columbia
Primary, secondary, and local regions
British Columbia Interior
Atlin District
Stikine Country
Peace River Country
Nechako
Bulkley
Cariboo
Interlakes
Fraser Canyon
Chilcotin
Omineca-Prince George
Robson Valley
Kootenays
West Kootenay
Slocan
Arrow Lakes
East Kootenay
Elk Valley
Columbia Valley
Columbia Country
Big Bend Country
Columbia Valley
Okanagan
Boundary
Similkameen
Thompson
Nicola
Bonaparte
Wells Gray-Clearwater
Shuswap
Lillooet-Fraser Canyon
Bridge River Country
South Coast
Lower Mainland
Greater Vancouver
Fraser Valley
Sea-to-Sky Corridor
Pemberton Valley (also part of Lillooet Country) Gates Valley (also part of Lillooet Country) Sunshine Coast Vancouver Island Greater Victoria Saanich Peninsula Western Communities South-central Island Cowichan Valley Chemainus Valley East-central Island Nanaimo-Parksville Comox Valley North Island Quatsino Sound Cape Scott Queen Charlotte Strait Johnstone Strait West Coast of Vancouver Island Kyuquot Sound Nootka Sound Clayoquot Sound Barkley Sound Alberni Valley Juan de Fuca region Gulf Islands Southern Gulf Islands Northern Gulf Islands Central Coast Queen Charlotte Strait Bella Coola Valley North Coast Haida Gwaii (formerly Queen Charlotte Islands) Skeena Nass Stewart Country
Manitoba
Primary and secondary regions
Northern Manitoba
Central Manitoba
Interlake
Parkland
Pallisers Triangle (Manitoba portion) Central Plains Eastman Westman Winnipeg Capital Region Pembina Valley