Islamization of Iran
The Islamization of Iran began after the Muslim conquest in the 7th century, when the Rashidun Caliphate overran the Sasanian Empire. Islam started spreading among Persians and other Iranian peoples, but many Iranians kept their own language and culture while adopting the new religion. Arabs were influential at first, but Iran did not become fully Arabized. A distinctly Iranian Muslim identity formed, and over time Iranian culture and Islam blended in a period sometimes called the Iranian Intermezzo.
In the following centuries, Islam in Iran was reshaped by new dynasties and by the interactions between Persian culture and Islamic beliefs. During the Abbasid era, many non-Arab Muslims (mawali) faced discrimination under the earlier Umayyads, while Persian language and customs gradually gained prestige. A Persian-speaking elite began to shape politics and culture within a Muslim empire. The Shu’ubiyah movement in the 9th century insisted on the value of Persian contributions to Islam, helping to promote a Persian sense of identity within the Muslim world.
The Samanid dynasty (roughly the 9th–10th centuries), whose rulers traced their heritage to Persian traditions, played a key role in reviving Persian language and culture. They supported Persian literature, and the first full translation of the Quran into Persian appeared during their rule. This era produced important Persian poets and the revival of ancient Persian festivals, and it reinforced the idea that Persian culture could flourish within Islam.
Over time, Persians and their culture helped shape the Islamic world. The Abbasids adopted many Sasanian administrative practices, and Persian officials became influential in government. Persian scholars and scientists—thinkers like Al-Farabi, Avicenna, and Nasir al-Din al-Tusi—made major contributions to philosophy, science, and learning. Arabic remained the language of religion and much of higher learning, but Persian became a major language of culture, administration, and literature in the Islamic world.
Religiously, Iran was largely Sunni for many centuries. A turning point came with the rise of the Safavid dynasty in the 16th century, which made Twelver Shi’a Islam the state religion. Since then, Shi’a Islam has been the dominant faith in modern Iran, a status Iran shares with parts of neighboring Iraq and Azerbaijan.
Zoroastrian communities continued to exist after the conquest, and many Iranians gradually converted to Islam over the centuries. Yet Islamization did not erase Iranian language and identity. The result was a powerful blend: Iran became a central pillar of the Islamic world while preserving its Persian language, literature, and cultural traditions. This Persian-Islamic synthesis helped shape science, art, architecture, and thought across the Muslim world and left a lasting legacy in Iran and beyond.
This page was last edited on 3 February 2026, at 18:11 (CET).