Pierrefonds—Dollard is a federal electoral district in Quebec, Canada, that has been represented in the House of Commons of Canada since 1988. Its population in 2001 was 102,542.

This riding occupies the northwest part of the Island of Montreal on Lac des Deux-Montagnes and Rivière des Prairies. It contains the cities of Dollard-des-Ormeaux, Pierrefonds, Roxboro, and L'Île-Bizard.

This riding is home to a number of pharmaceutical companies. Manufacturing is the main industry, followed by retail trade. Over 17% of the population has a university degree, while just over 4% has less than a Grade 9 education. The average family income is $75,497 with an unemployment rate of 6.5%.

According to the 2001 census, 37% of the population lists English as their mother tongue, while French is the first language for 32%. There are also significant populations who speak Arabic, Italian, Spanish and Chinese. This is an ethnically mixed riding, including Italian, East Indian and Chinese communities. The total immigrant population is almost 30%.

The district includes the Montreal borough of Pierrefonds-Roxboro, L'Île-Bizard–Sainte-Geneviève and the municipality of Dollard-des-Ormeaux.

The neighbouring ridings are Dorval—Lachine—LaSalle, Lac-Saint-Louis, Rivière-des-Mille-Îles, Laval—Les Îles, and Saint-Laurent—Cartierville.

This riding was established in 1986 by combining parts of Dollard and Vaudreuil ridings. The 1996 redistribution moved nine per cent of the population of the riding into Lac-St-Louis.

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