Louis Blais (January 7, 1755 – May 15, 1838) was a farmer and political figure in Lower Canada.
He represented Hertford in the Legislative Assembly of Lower Canada from 1800 to 1804.
He was born in Saint-Pierre-de-la-Rivière-du-Sud, the son of Michel Blais and Marie-Françoise Lizotte.
Blais was a captain in the militia, later reaching the rank of major.
He did not run for reelection to the assembly in 1804.