Cardwell, a federal electoral district in the Canadian province of Ontario, was represented in the House of Commons of Canada from 1867 to 1904. Cardwell is sometimes also considered one of Ontario's historic counties, as Cardwell was listed in some post-Confederation census records as a county of residence. Cardwell consisted of the Simcoe County townships of Adjala and Mono, and the Peel County townships of Albion (including the town of Bolton) and Caledon. The Cardwell electoral district was abolished in 1903 when it was redistributed between Dufferin, Peel and Simcoe South ridings.

Members of Parliament

This riding elected the following members of the House of Commons of Canada:

Election results

On Mr. Cameron's death, 14 November 1876: On Mr. White's nomination as member of the Privy Council and as Minister of the Interior, 5 August 1885: On Mr. White's death, 21 April 1888: On Mr. White's resignation, October 1895: While the Library of Parliament reports that Stubbs won by acclamation, newspaper reports indicate there was an election between three candidates, William Stubbs (running as a McCarthyite, rather than an Independent Conservative, R. B. Willoughby for the Conservatives and R. B. Henry for the Liberals.