The American Indian Wars, also known as the American Frontier Wars, and the Indian Wars, were fought by European governments and colonists in North America, and later by the United States government and American settlers, against various American Indian tribes. These conflicts occurred in the United States from the time of the earliest colonial settlements in the 17th century until the end of the 19th century. The various wars resulted from a wide variety of factors, the most common being the desire of settlers and governments for Indian tribes' lands. The European powers and their colonies also enlisted allied Indian tribes to help them conduct warfare against each other's colonial settlements. After the American Revolution, many conflicts were local to specific states or regions and frequently involved disputes over land use; some entailed cycles of violent reprisal.

As settlers spread westward across the United States after 1780, armed conflicts increased in size, duration, and intensity between settlers and various Indian tribes. The climax came in the War of 1812, when major Indian coalitions in the U.S. Midwest and the U.S. South fought against the United States and lost. Conflict with settlers became less common and was usually resolved by treaties between the federal government and specific tribes, which often required the tribes to sell or surrender land to the United States. These treaties were frequently broken by the U.S. government. The Indian Removal Act of 1830 authorized the U.S. government to force Indian tribes to move from east of the Mississippi River to the west on the American frontier, especially to Indian Territory which became Oklahoma. As settlers expanded onto the Great Plains and the Western United States, the nomadic and semi-nomadic Indian tribes of those regions were forced to relocate to reservations.

American Indian Wars

Indian tribes and coalitions often won battles with the encroaching settlers and soldiers, but their numbers were too few and their resources too limited to win more than temporary victories and concessions from the U.S. and other countries that colonized areas that had composed the modern-day borders of the U.S.

American Indian Wars

Colonial periods (1609–1774)

American Indian Wars

The colonization of North America by English, Spanish, French, Russian and Dutch was resisted by some Indian tribes and assisted by other tribes. Wars and other armed conflicts in the 17th and 18th centuries included: Beaver Wars (1609–1701) between the Iroquois and the French, who allied with the Algonquians Anglo-Powhatan Wars (1610–14, 1622–32, 1644–46), including the 1622 Jamestown Massacre, between English colonists and the Powhatan Confederacy in the Colony of Virginia Pequot War of 1636–38 between the Pequot tribe and colonists from the Massachusetts Bay Colony and Connecticut Colony and allied tribes Kieft's War (1643–45) in the Dutch territory of New Netherland (New Jersey and New York) between colonists and the Lenape people Peach Tree War (1655), the large-scale attack by the Susquehannocks and allied tribes on several New Netherland settlements along the Hudson River Esopus Wars (1659–63), conflicts between the Esopus tribe of Lenape Indians and colonial New Netherlanders in Ulster County, New York King Philip's War (Metacom's Rebellion) (1675–78) in New England between colonists and the local tribes including, but not limited to, the Nipmuc, Wampanoag, and Narragansett Tuscarora War (1711–15) in the Province of North Carolina Yamasee War (1715–17) in the Province of South Carolina Dummer's War (1722–25) in northern New England and French Acadia (New Brunswick and Nova Scotia) Pontiac's War (1763–66) in the Great Lakes region Lord Dunmore's War (1774) in western Virginia (Kentucky and West Virginia)

In several instances, the conflicts were a reflection of European rivalries, with Indian tribes splitting their alliances among the powers, generally siding with their trading partners. Various tribes fought on each side in King William's War, Queen Anne's War, Dummer's War, King George's War, and the French and Indian War, allying with British or French colonists according to their own self interests. On 14 August 1784, Russian colonists had massacred 200–3,000 Koniag Alutiiq tribesmen in Sitkalidak Island, Alaska. This massacre is known as Awa'uq Massacre. Despite the incidents that occurred between European colonists and the Native population, most Indian tribes were friendly towards the Swedes in New Sweden as result of Swedish authorities respecting tribal land.

East of the Mississippi (1775–1842)