The religious landscape of Isfahan Province is diverse, deeply historic, and predominantly Twelver Shia Muslim.
* **Islam:** The vast majority of residents are Shia Muslims. The province is dotted with some of the Islamic world's most spectacular mosques and shrines. * **Christianity:** The New Jolfa district in Isfahan is one of the most significant Armenian Christian centers in the Middle East, established in the 17th century by Shah Abbas I. * **Judaism:** Isfahan has one of the oldest Jewish communities in Iran. The Tomb of Serah bat Asher in Pir Bakran is a major historic Jewish pilgrimage site. * **Zoroastrianism:** Small communities remain, and the ancient Ateshgah (Fire Temple) of Isfahan stands on a hill as a testament to the region's pre-Islamic heritage.

