Ab Pakhsh District () is in Dashtestan County, Bushehr province, Iran. Its capital is the city of Ab Pakhsh.
In 2009, Darvahi Rural District and the city of Ab Pakhsh were separated from Shabankareh District in the formation of Ab Pakhsh District.
The 2011 census counted 21,352 people in 5,377 households. The 2016 census measured the population of the district as 23,132 inhabitants living in 6,478 households.