1. Iran
Shia population: 66-70 million
With close to 70 million Shias, Iran is well ahead on our 11 countries with highest Shia population list. Iran is considered the center of Shia Islam and all the important Shia scholars are located there. Shia Muslims consist 90 – 95% of all Muslim population in Iran, and 37 – 40% of world’s Shia population is located in Iran.
