Thanbyuzayat is a town in the Mon State of southeastern Burma. It is the administrative center for Thanbyuzayat Township. Thanbyuzayat is about 64 kilometres south of Mawlamyine and 24 kilometres miles south-east of Kyaikkami. During World War II Thanbyuzayat was the western terminus of the Thailand–Burma Railway linking up with the pre-war coastal railway between Ye and Rangoon. Thanbyuzayat was also the site of a Japanese Prisoner of war camp for the prisoners who worked on building the railway, and over 3,000 Allied servicemen are buried there in the Thanbyuzayat War Cemetery. Today a clock tower stands at the central road junction with roads headed north to Mawlamyine, south to Ye, and west to Kyaikkami and Setse.
