Châteauguay was a federal electoral district in Quebec, Canada, that was represented in the House of Commons of Canada from 1867 to 1917 and from 1979 to 2004.

It was created by the British North America Act of 1867.

In 1914, it was amalgamated with Huntingdon to become Châteauguay—Huntingdon riding.

The riding was recreated in 1976 from portions of La Prairie and Beauharnois—Salaberry ridings.

This riding elected the following members of Parliament: By-election: On Mr. Holton's death, 14 March 1880 By-election: On Mr. Brown's death, 30 May 1913 Riding history from the] Library of Parliament