Jean Blanchet (May 17, 1795 – April 22, 1857) was a physician and political figure in Canada East.
He completed his medical training in London and Paris; he returned and entered practice in partnership with his uncle.
He represented Quebec County in the Legislative Assembly of Lower Canada from 1834 to 1838.
In 1854, he was elected to the Legislative Assembly of the Province of Canada for Quebec City; he resigned in 1857 due to ill health and died in Quebec City five weeks later.
His nephew, Joseph-Godric Blanchet, became a member of both the House of Commons of Canada and the Legislative Assembly of Quebec.