Posht Ab District

Posht Ab District is a former administrative division of Zabol County, Sistan and Baluchestan province, Iran. Its capital was the city of Adimi.

At the 2006 National Census, its population was 40,434 in 8,737 households. The following census in 2011 counted 45,466 people in 10,786 households.

In September 2013, the district was separated from the county in the establishment of Nimruz County, which was divided into two districts of two rural districts each, with Adimi as its capital and only city at the time.