Joseph-Goderic (Joseph-Godric) Blanchet, (June 7, 1829 – January 1, 1890) was a Canadian physician and politician. He was the only person to serve as both Speaker of the House of Commons of Canada and Speaker of a provincial legislature. He represented Lévis in the House of Commons of Canada as a Liberal-Conservative member from 1867 to 1873 and from 1879 to 1883; he represented Bellechasse from 1875 to 1878. He also represented Lévis in the Legislative Assembly of Quebec from 1867 to 1875. He became Speaker of the provincial legislature and served in that position for two terms.