Pierre de Lauzon (known as Gannenrontié among the Iroquois) (bapt. September 13, 1687, Leignes-sur-Fontaine, Vienne, France—September 5, 1742, Quebec) was a noted eighteenth-century Jesuit missionary in New France. Although sometimes mentioned as Jean, in his official acts he invariably signed Pierre. From 1732 to 1739 he was superior of all the Jesuit missions in Canada.