Western Canada, commonly referred to as the West, is a region of Canada normally including all parts of Canada west of the province of Ontario. From west to east, this comprises four provinces:

• British Columbia (20 July 1871)
• Alberta (1 September 1905)
• Saskatchewan (1 September 1905)
• Manitoba (15 July 1870)

The latter three are collectively the Prairie provinces, or simply the Prairies, though the term is increasingly used for Manitoba and Saskatchewan only.

In some contexts, the term Western Canada may also include the territories of Yukon, Northwest Territories and Nunavut, although these are now more commonly grouped as the distinct region of Northern Canada.