Mon State (, ; ) is an administrative division of
Myanmar. It lies between
Kayin State to the east, the
Andaman Sea to the west,
Bago Region to the north and
Tanintharyi Region to the south, also having a short border with
Thailand's
Kanchanaburi Province at its south-eastern tip. The land area is 12,155 km
2. The
Dawna Range, running along the eastern side of the state in a NNW–SSE direction, forms a natural border with Kayin State. Mon State includes some small islands, such as
Kalegauk,
Wa Kyun and
Kyungyi Island, along its 566 km of coastline. The state's capital is
Mawlamyaing.