Don Valley West (French: Don Valley-Ouest) is a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada since 1979. Its population in 2001 was 115,539. 13.6% of the population is Muslim, the highest in Canada.

Its most high-profile MP has been John Bosley, who was Speaker of the House 1984-86.

Ethnic groups: 60.3% White, 14.3% South Asian, 8.6% Chinese, 4.6% Filipino, 4.0% Black, 3.0% West Asian, 1.4% Korean
Languages: 57.2% English, 1.3% French, 39.3% Other, 2.2% Multiple responses
Religions: 27.8% Protestant, 20.0% Catholic, 5.5% Christian Orthodox, 2.7% Other Christian; 13.6% Muslim, 8.2% Jewish, 3.7% Hindu, 1.2% Buddhist, 16.5% No affiliation
Average income: $57,558

The district includes the neighbourhoods of York Mills, Silver Hills, the western half of Don Mills, the eastern half of Lawrence Park, Leaside, and Thorncliffe Park in the City of Toronto. The area is 37 km².

The federal electoral district was created in 1976 from Don Valley riding.

John Godfrey, who had represented the riding since 1993, announced in November 2007 that he would be resigning his seat on July 1, 2008 in order to accept a position as headmaster of Toronto French School and would leave earlier if an election were called before that date. Godfrey subsequently postponed his resignation until August 1.

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