Pierre Baillargeon
 Pierre Baillargeon (November 8 1812 – December 15 1891) was a physician and political figure in Quebec. He sat for Stadacona division in the Senate of Canada from 1874 to 1891.He was born in Île-aux-Grues Lower Canada the son of François Baillargeon and Marie-Louise Langlois dit Saint-Jean and was educated at the Collège de Nicolet. Baillargeon received a M.D. from Harvard University.