Donyi-Polo (also Donyi-Poloism) is the designation given to the indigenous religions, of animistic and shamanic type, of the Tani and other Tibeto-Burman peoples of Arunachal Pradesh, in north-eastern India. The name "Donyi-Polo" means "Sun-Moon", and was chosen for the religion in the process of its revitalisation and institutionalisation started in the 1970s in response to inroads made by Christianity and the possibility of absorption into Hinduism.
The religion has developed a congregational system, hymns to be sung composed in the Tani ritual language of shamans, a formalised philosophy-theology and iconography of the gods and temples. The pioneer of the revival was Talom Rukbo. Donyi-Polo is related to the Hemphu-Mukrang religion of the Karbi and the Nyezi-No of the Hruso.
In the Donyi-Polo belief, the fountain god that begets the universe (God or the Godhead) is referred to as Sedi by the Minyong and Padam, Jimi by the Galo. All things and beings are parts of the body of Sedi: in creation, the hair of Sedi becomes the plants of the earth, his tears become rain and water, his bones become rocks and stones, and his two eyes become Donyi (the Sun) and Polo (the Moon).Sedi, after creation, is a deus otiosus but continues to observe creation through his eyes, his double aspect veiling-unveiling-revealing himself.
In Galo beliefs, Jimi manifests as Melo (Sky) and Sidi (Earth), out of the interaction of which all things and beings are born, including Donyi and Polo. There are other myths explaining the meaning of the duality Donyi and Polo.