Laprairie—Napierville was a federal electoral district in Quebec, Canada, that was represented in the House of Commons of Canada from 1896 to 1935.
This riding was created in 1892 from Laprairie and Napiervilleridings. It consisted initially of:
the villages of Laprairie, St. Rémi and Napierville, and
the parishes de Laprairie, St. Constant, St. Isidore, St. Jacques le Mineur, St. Philippe, St. Michel Archange, St. Patrice de Sherrington, St. Édouard, St. Cyprien and St. Rémi.
In 1903, the Indian village and reserve of Caughnawaga were transferred from Châteauguay riding into Laprairie—Napierville.
In 1924, it was defined to consist of the Counties of Laprairie and Napierville.