Elgin—Middlesex—London is a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada since 1997.

This riding lost territory to London—Fanshawe during the 2012 electoral redistribution.

Under the 2022 Canadian federal electoral redistribution the riding will be largely replaced by Elgin—St.

According to the 2021 Canadian census[2] Languages: 84.1% English, 2.9% German, 1.8% Plautdietsch Religions: 59.0% Christian (17.9% Catholic, 8.7% United Church, 4.2% Anglican, 3.3% Baptist, 2.8% Anabaptist, 2.3% Presbyterian, 1.1% Reformed, 1.0% Pentecostal, 17.7% other), 2.6% Muslim, 36.7% none Median income: $42,400 (2020) Average income: $51,250 (2020) This riding has elected the following members of Parliament:

Note: Canadian Alliance vote is compared to the Reform vote in 1997 election.