Chaghi District, also known as Chaghi District, is the largest district of Pakistan by area, located in the northwestern corner of the Balochistan province of Pakistan. District shares the border with two countries Afghanistan and Iran.The word chagai is combination of two Persian words"چاہ گے" Chah means (well) and gaih means (spot). Chagai means the place of Wells.

Balochistan is a province of Pakistan. Located in the southwestern region of the country, Balochistan is the largest province of Pakistan by land area but is the least populated one. It is bordered by the Pakistani provinces of Khyber Pakhtunkhwa to the north-east, Punjab to the east and Sindh to the south-east; shares international borders with Iran to the west and Afghanistan to the north; and is bound by the Arabian Sea to the south. Balochistan is an extensive plateau of rough terrain divided into basins by ranges of sufficient heights and ruggedness. It has the world's largest deep sea port, the Port of Gwadar lying in the Arabian Sea.