Iranians only practice Islam , with 93 % being Shi'a and 7 % being Sunni .
Nowadays Islam is the religion of 100 % of Iranians , approximately 93 % of Iranians are Shi'a and 7 % are Sunni , mostly Turkomen , a minority of Arabs ( mainly in Hormozgan Province ) , Baluchs , and Kurds living in the south , southeast , northeast and northwest .
Islam in Iran