Page "Champa" Paragraph 31

Islam started making headway among the Cham after the 10th century, but it was only after the 1471 invasion that this influence picked up speed.

By the 17th century, the Royal families of Cham Lords also began to turn to Islam and this eventually triggerred the major shift in religious orientation of the Cham so that by the time of their final annexation by the Vietnamese, the majority of the Cham people had converted to Islam.

Most Cham are now Muslims, though significant minorities of Hindus and Mahayana Buddhists exist.