Bueng Chawak or full name Bueng Chawak Chaloem Phra Kiat is a natural freshwater lake in central Thailand. It has an area of 2,700 rais, covering the area of the sub-districts Pak Nam, Doem Bang and Hua Khao of Doem Bang Nang Buat District, Suphan Buri Province all the way to the sub-district of Ban Chian, Hankha District, Chai Nat Province. The lake is approximately 64 km (39.8 mi) north of Suphan Buri City.