Andika County (Persian: شهرستان اندیکا) is in Khuzestan province, Iran. Its capital is the city of Qaleh-ye Khvajeh.

After the 2006 National Census, Andika District was separated from Masjed Soleyman County in the establishment of Andika County, which was divided into three districts of two districts each, with Qaleh-ye Khvajeh as its capital and only city at the time. After the 2011 census, the village of Jafarabad, after merging with several other villages, was elevated to city status as Abezhdan. After the 2016 census, the village of Zavut was elevated to the status of a city.

In 2020, it was reported that the least weasel, the world's smallest carnivore, was seen in Andika County.

At the time of the 2011 census, the county's population was 50,797 people in 10,440 households. The 2016 census measured the population of the county as 47,629 in 11,578 households.

Andika County's population history and administrative structure over two consecutive censuses are shown in the following table.

Media related to Andika County at Wikimedia Commons