The Beaver Wars, also known as the Iroquois Wars or the French and Iroquois Wars were a series of conflicts fought intermittently during the 17th century in North America throughout the Saint Lawrence River valley in Canada and the Great Lakes region which pitted the Iroquois against the Hurons, northern Algonquians and their French allies. As a result of this conflict, the Iroquois destroyed several confederacies and tribes through warfare: the Hurons or Wendat, Erie, Neutral, Wenro, Petun, Susquehannock, Mohican and northern Algonquins whom they defeated and dispersed, some fleeing to neighbouring peoples and others assimilated, routed, or killed.

The Iroquois, also known as the Five Nations, and later as the Six Nations from 1722 onwards; alternatively referred to by the endonym Haudenosaunee are an Iroquoian-speaking confederacy of Native Americans and First Nations peoples in northeast North America. They were known by the French during the colonial years as the Iroquois League, and later as the Iroquois Confederacy, while the English simply called them the "Five Nations". The peoples of the Iroquois included the Mohawk, Oneida, Onondaga, Cayuga, and Seneca. After 1722, the Iroquoian-speaking Tuscarora people from the southeast were accepted into the confederacy, from which point it was known as the "Six Nations".