Legality of Cannabis by U.S. Jurisdiction Tvrtko of Bosnia may refer to: Tvrtko I of Bosnia, medieval ban, and king of Bosnia (1353-1366 and 1367-1391) Tvrtko II of Bosnia, medieval king of Bosnia (1404–1409 and again 1421–1443) See also[edit] Tvrtko (disambiguation) Tvrtko Kotromanić (disambiguation) List of rulers of Bosnia