Than Kyun or Davis Island is an island at the southern end of the Mergui Archipelago, Burma. It is the largest and highest island of the Alladin Islands, a scattered cluster of islands extending to the W and SSW of Zadetkyi Island. This densely wooded island has two main peaks, each with a height of around 450 metres (1,476 feet). The island has a roughly round shape with a diameter of about 6 kilometres (3.7 miles). Off its eastern shore rises a 5.5-metre-high (18.0-foot) rock surrounded by a reef. Than Kyun lies 4.5 kilometres (2.8 miles) west of the southern end of Zadetkyi Island.[1]