Uchee Billy or Yuchi Billy (unknown–November 25, 1837, St. Augustine, Florida) was a chief of a Yuchi band in Florida during the first half of the 19th century. Uchee Billy's band was living near Lake Miccosukee when Andrew Jackson invaded Spanish Florida during the First Seminole War and attacked the villages in the area. Yuchi Billy and his band then moved to the St. Johns River. During the Second Seminole War, Uchee Billy was an ally of the Seminoles, and was one of the principal war chiefs who fought the U.S. Army.