This is a list of Canada's 338 federal electoral districts (commonly referred to as ridings in Canadian English) as defined by the 2013 Representation Order.
Federal electoral districts are constituencies that elect Members of Parliament to Canada's House of Commons every election. Provincial electoral districts often have names similar to their local federal counterpart, but usually have different geographic boundaries. Canadians elected members for each federal electoral district most recently in the 2015 federal election on October 19, 2015 .
There are four ridings established by the British North America Act in 1867 that have existed continuously without changes to their names or being abolished and reconstituted as a riding due to redistricting: Beauce (Quebec), Halifax (Nova Scotia), Shefford (Quebec), and Simcoe North (Ontario).
On October 27, 2011, the Conservative government tabled Bill C-20, a measure that would expand the House of Commons from 308 to 338 seats, with 15 additional seats for Ontario, 6 additional seats each for Alberta and British Columbia, and 3 for Quebec. This follows two previous measures to expand the chamber.The new electoral districts came into effect for the 2015 federal election.