Pre-colonial religion in the Philippines was deeply rooted in animism and polytheism, with indigenous beliefs centering on the worship of nature spirits, ancestors, and deities. Early Filipinos believed that the natural world was made with spirits or anito and maintained rituals to honor them, ensure harmony, and seek their favor for harvests, health, and protection. These practices were led by Babaylan (shamans or spiritual leaders), who acted as intermediaries between the spirit world and the community. The babaylan were often women or effeminate men, holding significant roles in society as healers, priests, and keepers of oral traditions. 

Additionally, some regions had pantheons of deities governing natural elements and human concerns. For example, Bathala was recognized as the supreme deity in Tagalog mythology, while Visayans worshiped deities like Kaptan (sky god) and Magwayen (goddess of the sea and the afterlife). Burial rituals, offerings, and festivals reflected a strong belief in the afterlife and the cyclical nature of existence. 

Although animism dominated early Philippine history. It is thought that the first foreign religions to get to the Philippines could have been Buddhism and Hinduism around 900 AD. Specifically in a city-state called Srivijaya, located on the island of Sumatra. By the 14th century AD, Islam had spread to the Philippines. Especially in the islands of Mindanao and Sulu. Islam grew so powerful here that these islands still remain Islamic today.