Lanark North was a federal electoral district represented in the House of Commons of Canada from 1867 to 1917.

In 1882, the North Riding of Lanark was defined to consist of the townships of Ramsay, Pakenham, Darling, Dalhousie, North Sherbrooke, Lavant, Fitzroy, Huntley and Lanark, the Town of Almonte, and the Village of Lanark.

In 1903, the village of Carleton Place was added to the riding, and the townships of Fitzroy and Huntley were excluded.

The electoral district was abolished in 1914 when it was merged into Lanark riding.

This riding has elected the following members of Parliament: On Mr. Galbraith's death, 17 December 1879: On Mr. Jamieson being appointed Junior County Judge, Wellington County, 8 December 1891: