Louis Gauvreau (May 11, 1761 – August 16, 1822) was a businessman and political figure in Lower Canada.
He owned a general store and was also involved in lumber, wholesale trade, real estate and money-lending.
In 1815, he purchased the fief of Grosse-Île and, in 1817, a large part of the seigneury of Rivière-du-Sud.
In the assembly, he often supported the parti canadien but held his own views and voted accordingly.
His daughter Adélaïde married Claude Dénéchau, who also served in the legislative assembly, and his daughter Marie-Reine-Josephte married Sir Narcisse-Fortunat Belleau, who became a premier of the Province of Canada and Lieutenant-Governor of Quebec.