Teknaf (Bengali: টেকনাফ Ṭeknaf) is an upazila of Cox's Bazar District in the Division of Chittagong, Bangladesh. It forms the southernmost point in mainland Bangladesh (St. Martin's Island is the southernmost point overall). The name of the region comes from the Naf River which forms the eastern boundary of the upazila. It shares a border with Myanmar, opposite the town of Maungdaw.
