Khuzestan province ([xuːzest̪ʰɒːn] ; Persian: استان خوزستان) is one of the 31 Provinces of Iran. Located in the southwest of the country, the province borders Iraq and the Persian Gulf, covering an area of 63,238 square kilometres (24,416 sq mi). Its capital is the city of Ahvaz. Since 2014, it has been part of Iran's Region 4.
Khuzestan comprises much of what historians refer to as ancient Elam, whose capital was at Susa. It was once one of the most important regions in the Ancient Near East.