The Treaty of Fort McIntosh was a treaty between the United States government and representatives of the Wyandotte, Delaware, Chippewa and Ottawa nations of Native Americans. The treaty was signed at Fort McIntosh (present Beaver, Pennsylvania) on January 21, 1785.
In a follow up to the 1784 Treaty of Fort Stanwix, where the Seneca nation had given up claims to the Ohio Country, the American government sought a treaty with the remaining tribes having claims in the Ohio Country. The United States sent a team of diplomats including George Rogers Clark, Richard Butler, and Arthur Lee to negotiate a new treaty.
In January 1785, the representatives of the two sides met at Fort McIntosh at the confluence of the Ohio and Beaver Rivers. The tribes ceded all claims to land in the Ohio Country east of the Cuyahoga and Muskingum rivers. The tribes also ceded the areas surrounding Fort Detroit and Fort Michilimackinac to the American government and gave back captives taken in raids along the frontier.
Problems with the new treaty soon arose. Connecticut's Western Reserve extended west of the Cuyahoga River into the reservation lands. Connecticut had already granted large tracts of land, later to be nicknamed the "Firelands", in the region to Revolutionary War veterans and Patriots who had lost their homes in the war.