2012 Canadian federal electoral redistribution

The federal electoral redistribution of 2012 was a redistribution of electoral districts ("ridings") in Canada following the results of the 2011 Canadian census. As a result of amendments to the Constitution Act, 1867, the number of seats in the House of Commons of Canada increased from 308 to 338. The previous electoral redistribution was in 2003.

The redistribution was implemented by proclamation under the Electoral Boundaries Readjustment Act on October 5, 2013, and came into effect upon the dissolution of the 41st Canadian Parliament on August 2, 2015. The resulting electoral districts and boundaries were used in the 2015, 2019, and 2021 federal elections.

Federal electoral districts were redistributed in 2022, which came into effect upon the dissolution of the 44th Canadian Parliament on April 23, 2025.