Hajjiabad County () is in Hormozgan province, Iran. Its capital is the city of Hajjiabad, about 100 km north of Bandar Abbas (the capital of the province), and best known for its citrus produce.
After the 2006 National Census, the village of Sar-e Gaz-e Ahmadi was elevated to the status of a city.
At the time of the 2006 census, the county's population was 62,442 in 15,056 households. The following census in 2011 counted 65,889 people in 17,580 households. The 2016 census measured the population of the county as 69,625 in 20,700 households.
Hajjiabad County's population history and administrative structure over three consecutive censuses are shown in the following table.