The majority religion in Iran is Shi'ite Islam.
The majority of Iranians follow Shi'ite Islam.
Shi'aa.The majority or 90% of all Muslims in Iran are Shiites. Shi'a Islam is the official state religion of Iran. Sunni and Sufi only represent 9%of the Muslims there.
Islam has only two branches: Sunnah & Shieaa. The two branches are found in Iran with a Shiaa majority there.
shia which is the sect of the majority in Iran
The Bahá'í Faith has its origins in Persia (now called Iran); the majority religion there is Shia Islam. However, the first official proclamation (the founder, Bahá'u'lláh, formally stated that he was the Messenger of God expected according to previous prophecies) was in Baghdad, which was then part of the Ottoman (Turkish) empire. The majority religion there is Sunna Islam.
A majority. About 90-95% of the population (according to the Wikipedia article on Iran).
Approximately 99% of the population in Iran follows Islam, with the majority being Shia Muslims.
Majority is Islam, and most of them are shite muslims. There are also Jews, Christians and zarathushtis
Sunni Muslims (the great majority) and Shi'ite or ShiahMuslims (concentrated in Iran)
The dominant religion of Iran is Islam (majority Shi'ite), while the Baha'i Faith is the largest non-Muslim minority religion.
The major religion is Islam; Iran has a shiite majority, but also a sunnite minority (those are two varieties of Islam). The largest minority is the Bahá'í Faith, which is currently sorely oppressed in Iran. Other minorities include Christians and Zoroastrians.