What is the oldest religion in the Middle East?
Sarah Duran
Updated on February 23, 2026
In the Middle East, Zoroastrianism is found in central Iran. Today, there are estimated to be under 20,000 Zoroastrians in Iran. It is one of the oldest monotheistic religions as it was founded 3500 years ago. It was also one of the most powerful religions in the world for about 1000 years.