Setos are an indigenous Finnic peoples and linguistic minority that have historically lived in the borderlands between modern day Estonia and Russia. Setos have historically spoken the Seto language and been Orthodox Christians. The Seto language belongs to the Finnic group of the Uralic language family. Since the early 2000s, the Setos have sought greater recognition, rather than having their language considered a dialect of Estonian. Eastern Orthodox Christianity, with influences from local folk religions is widely practiced by the Seto peoples.

The Baltic Finnic peoples, often simply referred to as the Finnic peoples, are the peoples inhabiting the Baltic Sea region in Northern and Eastern Europe who speak Finnic languages. They include the Finns, Estonians, Karelians, Veps, Izhorians, Votes, and Livonians. In some cases the Kvens, Ingrians, Tornedalians and speakers of Meänkieli are considered separate from the Finns.