London was a federal electoral district represented in the House of Commons of Canada from 1867 to 1968.

It consisted initially of the City of London, Ontario.

In 1924, it was redefined as consisting of that part of the city of London lying west of and south of a line following (from the north) Adelaide Street and Oxford Street, the east side of Wolsley Barracks area, Middleton Avenue, Glasgow Street, Lorne Avenue, Burbrook Place, Dundas Street, Swinyard Street, Pine Street, Elm Street, Trafalgar Street, Adelaide Street, the south branch of the River Thames, Beverly Street, and Wellington Street south to the south boundary of the city.

This riding elected the following members of the House of Commons of Canada: Walker unseated, 9 September 1874 Election annulled

Hyman appointed Minister of Public Works, 22 May 1905 Hyman resigned 11 April 1907 Beattie died 2 December 1914 Betts died 7 May 1938