What religions were practiced in Northern Eurasia, and by whom?

Some of the religions practiced in Northern Eurasia include:

- Shamanism: practiced by indigenous peoples such as the Sami, Yakuts, Evenks, and Chukchi in the Arctic regions of Russia
- Tengriism: a Turkic and Mongolic belief system based on the worship of Tengri, the sky god, practiced by various ethnic groups in Central Asia and Siberia
- Russian Orthodoxy: the predominant religion in Russia, brought by missionaries from Byzantium in the 10th century
- Islam: practiced by various ethnic groups in the Caucasus region and Central Asia, introduced through Arab and Persian merchants and missionaries
- Buddhism: practiced by some ethnic groups in Siberia and Mongolia, introduced through trade with China and Tibet

These religions were practiced by different ethnic groups and communities in Northern Eurasia.