Phetchabun (Thai: เพชรบูรณ์, pronounced [pʰét.tɕʰā.būːn]) is one of Thailand's seventy-six provinces (changwat) and lies in lower northern Thailand. Neighbouring provinces are (from north clockwise) Loei, Khon Kaen, Chaiyaphum, Lopburi, Nakhon Sawan, Phichit and Phitsanulok.
