About IRAN Updated 2024 Government type Islamic Republic Capital Tehran Administrative divisions There are 28 provinces (or 28 ostanha; singular-ostan): Ardabil, Azarbayjan-e Gharbi, Azarbayjan-e Sharqi, Bushehr, Chahar Mahall va Bakhtiari, Esfahan, Fars, Gilan, Golestan,Hamadan, Hormozgan, Ilam, Kerman, Kermanshahan, Khorasan, Khuzestan, Kohkiluyeh va Buyer Ahmadi, Kordestan, Lorestan, Markazi, Mazandaran, Qazvin, Qom, Semnan, Sistan va Baluchestan,Tehran, Yazd...