Kurds Before Islam
Religions in Pre-Islamic Kurdish people were indigeneous monotheistic beliefs, mostly Mithraism[1][2] followed by Zoroastrianism, Judaism and Christianity with smaller numbers.
There conflicting theories about Yezidism and Yarsanism. Some historians believe that these two religions could date back to the Pre-Islamic era. Although their earliest scripts were written in 11th & 12th centuries, their oral traditional have deeper histories.