The Miami Confederacy refers to a collection of closely related Native American tribes in 18th-century North America. The tribes included the Miami centered in Kekionga (modern-day Fort Wayne, Indiana) and their nearby Eel River band, the Piankeshaw centered near modern-day Vincennes, Indiana, the Kickapoo near modern Terre Haute, Indiana, and the Wea centered near modern-day Lafayette, Indiana.
The term Miami Confederacy is also used to refer to the Western Confederacy, an alliance of North American Indians in the Great Lakes region following the American Revolutionary War (1775-1783). This confederacy, which had its roots in pan-tribal movements dating to the 1740s, came together to resist the expansion of the United States into the Northwest Territory after Great Britain ceded the region to the United States after the war. The resistance resulted in the Northwest Indian War (1785-1795), in which the United States suffered a series of disastrous defeats before finally achieving victory in 1794 at the Battle of Fallen Timbers.