Blanchet is a French surname. Notable people with the surname include:
Abbé François Blanchet (1707–1784), French littérateur
Augustin-Magloire Blanchet (1797–1887), first Bishop of Walla Walla and Nesqually (Washington); brother of François Norbert
Emile-Robert Blanchet (1877–1943), Swiss-born, French-settled pianist and composer
François Blanchet (disambiguation)
Georges Blanchet, Oblate missionary in British Columbia and the Pacific Northwest
Jean Blanchet (watchmaker), Swiss watchmaker, founder of Manufacture d'Horologerie Blanchet & Cie
Joseph-Goderic Blanchet (1820–1890), Canadian physician and politician
Luz Blanchet (born 1966), Mexican TV host
Pierre Blanchet, (1459–1519), l’Avocat patelin
