Phetchaburi (Thai: เพชรบุรี, pronounced [pʰét.t͡ɕʰā.bū.rīː]) is one of the western or central provinces (changwat) of Thailand. Neighboring provinces are (from north clockwise) Ratchaburi, Samut Songkhram, and Prachuap Khiri Khan. In the west it borders Tanintharyi Division of Myanmar. Phetchaburi has a national park called "Kaeng Krachan" which consists of a reservoir overlooking its islands.