Treaty of Chicago

This article is about the U.S. treaties. For the international treaty, see Chicago Convention on International Civil Aviation. For other uses, see Treaty of Chicago (disambiguation).
Traditional range of Anishinaabe—Anishinini, including Council of Three Fires, near the Great Lakes (c. 1650 - 1820)
The 1821 treaty ceded the L-shaped grey area in southwest Michigan, as well as land around the southern coast of Lake Michigan.

The Treaty of Chicago may refer to either of two treaties made and signed in the settlement that became Chicago, Illinois between the United States and the Odaawaa (anglicized Ottawa), Ojibwe (anglicized Chippewa), and Bodéwadmi (anglicized Potawatomi) (collectively, Council of Three Fires) Native American peoples. The first was in 1821 and the second in 1833.