The State of Muskogee was a proclaimed sovereign nation located in Florida, founded in 1799 and led by William Augustus Bowles, a Loyalist veteran of the American Revolutionary War who lived among the Muscogee, and envisioned uniting the Native Americans of the Southeast into a single nation that could resist the expansion of the United States. Bowles enjoyed the support of the Miccosukee (Seminole) and several bands of Muscogee. He envisioned his state as eventually growing to encompass the Cherokee, Upper and Lower Creeks, Choctaw, and Chickasaw, in parts of present-day Georgia and Alabama.

William Augustus Bowles was an American-born military officer and adventurer. Born in Frederick County, Maryland, Bowles was commissioned into the Maryland Loyalists Battalion at the rank of ensign, seeing action during the American Revolutionary War, including the 1781 siege of Pensacola. He subsequently established an alliance with the Muscogee and founded the State of Muskogee. In 1803, Bowles was betrayed and handed over to the Spanish, who imprisoned him in Morro Castle, where he died two years later.