Lafontaine (electoral district)

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Lafontaine (; also known as Lafontaine—Rosemont) was a federal electoral district in Quebec, Canada, that was represented in the House of Commons of Canada from 1949 to 1979.

This riding was created in 1947 from parts of Hochelaga, St. James and St. Mary ridings. It consisted of a part of the city of Montreal.

The riding's name was changed in 1975 to "Lafontaine—Rosemont", and the riding was abolished in 1976 when it was redistributed into Hochelaga, Laurier, Maisonneuve and Rosemont ridings.