Banburi, known to the Chinese as Pasu Province (Thai: จังหวัดประจวบคีรีขันธ์, English: ChangwatPrachuapKhiriKhan), is also translated as Pasu Giri County. It is a province in southern Thailand, with the capital city of Banburi. It borders Myanmar to the west, Phetchaburi and Chumphon to the north and south respectively, and the Gulf of Thailand (formerly known as the Gulf of Siam) to the east.