Otacity Ostenaco (/ˈoʊtəˌsɪti ˌoʊstɪˈnækoʊ/; Cherokee: ᎤᏥᏗᎯ ᎤᏍᏔᎾᏆ, romanized: Utsidihi Ustanaqua, or "Bighead"; c. 1710 – 1780) was a Cherokee leader and warrior of the 18th century. By his thirties, he had assumed the warrior rank of Utsidihi (Mankiller), and the title of the Tassite of Great Tellico. He then rose to assume the higher Cherokee rank of Cherokee chief warrior or skiagusta, orator, and leading figure in diplomacy with British colonial authorities. The name Otacity has a variety of spellings.