Map - Teknaf Upazila (Teknaf)

Teknaf (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). The name of the region comes from the Naf River which forms the Eastern boundary of the upazila. It shares a border with Myanmar, oppsite the town of Maungdaw.

Teknaf is located at 20.8667°N, 92.3°W. It has 23,675 households and a total area of 388.68 km2. The tidal range at the Teknaf coastal area is strongly influenced by the Naaf river estuary. The area has a warm tropical climate and sufficient rainfall to enable it to support a wide biological diversity.

Teknaf Peninsula is one of the longest sandy beach ecosystems (80 km) in the world. It represents a transitional ground for the fauna of the Indo-Himalayan and Indo-Malayan ecological sub-regions. Important habitats at the site include mangrove, mudflats, beaches and sand dunes, canals and lagoons and marine habitat. Mangrove forest occurs in Teknaf peninsula both as natural forest with planted stands and mostly distributed in the inter-tidal zone. The Teknaf peninsula mangroves support the habitat of 161 different species of fish. Teknaf reserved forest is one of the oldest reserved forests in Bangladesh.