Ahvaz County () is in Khuzestan province, Iran. Its capital is the city of Ahvaz.
At the 2006 census, the county's population was 1,317,377 in 274,296 households. The following census in 2011 counted 1,395,184 people in 351,980 households, by which time Anaqcheh Rural District and the former Bavi District had been separated from the county to form Bavi County. At the 2016 census, the county's population was 1,302,591 in 362,480 households, when the former Hamidiyeh District had separated from the county to form Hamidiyeh County, and Kut-e Abdollah Rural District and Soveyseh Rural District to establish Karun County.
Administrative divisions
The population history and structural changes of Ahvaz County's administrative divisions over three consecutive censuses are shown in the following table. The latest census shows three districts, six rural districts, and two cities.