Pursat (Khmer: ខេត្តពោធិ៍សាត់, IPA: [poː sat]; "Drifting Bodhi"; Thai: โพธิสัตว์, RTGS: Phothisat, pronounced [pʰōː.tʰíʔ.sàt]; "Bodhisattva") is a province (khaet) of Cambodia. It is located in the western part of the country and borders clockwise from the north with Battambang Province, the Tonlé Sap, Kampong Chhnang Province, Kampong Speu Province, Koh Kong Province, and Thailand. It is located between the Tonle Sap and the northern end of the Cardamom Mountains. The Pursat River bisects the province, running from the Cardamoms in the west to the Tonle Sap in the east.
The fourth largest province of Cambodia in area, Pursat ranks only 14th in population. The region is accessible by National Highway 5, by boat, rail and by numerous smaller roads. The capital, Pursat town, lies 174 kilometres north west of Phnom Penh by road and 106 kilometres south east of Battambang.
The province is subdivided into 6 districts.
Pursat is one of the nine provinces that are part of the Tonle Sap Biosphere Reserve. The eastern part of the province includes part of the lake and the surrounding basin area.