Laprairie—Napierville (French pronunciation: [lapʁɛʁi napjɛʁvil]) was a federal electoral district in Quebec, Canada, that was represented in the House of Commons of Canada from 1896 to 1935.

It consisted initially of: 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.

It was abolished in 1933 when it was redistributed into Beauharnois—Laprairie and St. Johns—Iberville—Napierville ridings.

This riding elected the following members of Parliament: By-election: On Mr. Lanctôt's death, 30 May 1929