Abadeh Tashk (Persian: آباده طشك) is a city in the Central District of Bakhtegan County, Fars province, Iran, serving as capital of both the county and the district. It is also the administrative center for Abadeh Tashk Rural District.

At the 2006 National Census, its population was 6,213 in 1,614 households, when it was in the former Abadeh Tashk District of Neyriz County. The following census in 2011 counted 7,562 people in 1,934 households. The latest census in 2016 showed a population of 7,379 people in 2,277 households.

In July 2018, the district was separated from the county in the establishment of Bakhtegan County, which was divided into two districts of two rural districts each, with Abadeh Tashk as its capital and only city at that time.