Sir Hector-Louis Langevin, KCMG, CB, PC, KC (August 25, 1826 – June 11, 1906) was a Canadian lawyer, politician, and one of the Fathers of Confederation.

He held various positions in Cabinet, including Solicitor General (1864–66), Postmaster General (1866–67), Secretary of State for Canada (1867–69), Superintendent-General of Indian Affairs (1868–69), Minister of Public Works (1869–73) and acting Minister of Militia and Defence (1873).

His opponent contested the election and it was declared invalid, but he won the subsequent by-election in 1877.

He lobbied behind the scenes against the hanging of Louis Riel in 1885 and was one of the few Conservatives Members of Parliament to survive the resulting backlash in the province of Quebec in 1887.

[1] In 1883 he stated in Parliament "In order to educate the (‘Indian’) children properly we must separate them from their families.

If you leave them in the family they may know how to read and write, but they will remain savages, whereas by separating them in the way proposed, they acquire the habits and tastes…of civilized people.