Sainte Marie among the Iroquois (originally known as Sainte Marie de Gannentaha or St. Mary's of Ganantaa) was a 17th-century French Jesuit mission located in the middle of the Onondaga nation of the Haudenosaunee/Iroquois. It was located on Onondaga Lake near modern-day Syracuse, New York. The original mission was in use only from 1656 to 1658. A modern replica is in operation as a museum and interpretive center. It is open between May and October as a "living history" project, with costumed interpreters on weekends during the Summer.