- Hinduism was brought to the empire from India in the first few centuries AD.
- Buddhism was introduced to the empire in the sixth century AD.
The Angkor kings were initially Hindu, but they began to adopt Buddhism in the 11th century. Buddhism eventually became the dominant religion of the empire.
Hindu beliefs in Angkor were similar to those of Hindus in India. The Angkor Hindus believed in a pantheon of gods and goddesses, including Shiva, Vishnu, and Brahma. They also believed in reincarnation and the caste system.
Buddhist beliefs in Angkor were also similar to those of Buddhists in India. The Angkor Buddhists believed in the Four Noble Truths and the Eightfold Path. They also believed in reincarnation and the concept of karma.
Syncretism was the combining of Hindu and Buddhist beliefs and practices in Angkor. The Angkor kings often worshipped both Hindu and Buddhist deities and built temples that incorporated elements of both religions. Syncretism was a unique feature of the Angkor Empire and contributed to its cultural richness.