Thanbyuzayat (Burmese: သံဖြူဇရပ်မြို့; Mon: ဇြပ်ဗု Tin Shelter) is a town in the Mon State of southeastern Burma (Myanmar). It is the administrative center for Thanbyuzayat Township. Thanbyuzayat is about 64 kilometres (40 mi) south of Mawlamyine (Moulmein) and 24 kilometres (15 mi) miles south-east of Kyaikkami (Amherst).
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.