Middlesex North was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1917. It was created by the British North America Act of 1867 which divided the County of Middlesex into three ridings: the Middlesex North, Middlesex West and Middlesex East.
In 1903, it was redefined to consist of the townships of Adelaide, Biddulph, Lobo, McGillivray, Williams East and Williams West, the town of Parkhill and the villages of Ailsa Craig and Lucan.
The electoral district was abolished in 1914 when it was redistributed between Middlesex East and Middlesex West ridings.
|Canadian federal election, 1867|
|Canadian federal election, 1872|
|Canadian federal election, 1874|
On Mr. Scatcherd's death, 15 April 1876:
|By-election on 7 June 1876|
|Liberal||Robert Colin Scatcherd||1,576|
|Canadian federal election, 1878|
|Liberal||Robert Colin Scatcherd.||1,621|
|Canadian federal election, 1882|
|Canadian federal election, 1887|
|Canadian federal election, 1891|
|Canadian federal election, 1896|
|Conservative||HUTCHINS, William H.||2,122|
|Canadian federal election, 1900|
|Canadian federal election, 1904|
|Canadian federal election, 1908|
|Liberal||SMITH, Alexander Wilson||1,842|
|Conservative||DOYLE, James William||1,779|
|Canadian federal election, 1911|
|Liberal||SMITH, Alexander Wilson||1,715|