Church of Bosnia

Bosnian Church Crkva bosanska Црква босанска
Governance	Banate of Bosnia Kingdom of Bosnia
Origin	11th century
Separated from	Roman Catholic Church
Other name(s)	Crkva bosansko-humskih krstjana

The Bosnian Church (Bosnian: Crkva bosanska, Црква босанска) was a Christian church in medieval Bosnia that was independent of and considered heretical by both the Roman Catholic and the Eastern Orthodox hierarchies.

Historians have traditionally connected the church with the Bogomils, although this has been challenged. Adherents of the church called themselves simply krstjani ("Christians") or dobri Bošnjani ("Good Bosnians"). The church's organization and beliefs are poorly understood, because few if any records were left by church members, and the church is mostly known from the writings of outside sources, primarily Roman Catholic ones.

Christian missions emanating from Rome and Constantinople started pushing into the Balkans in the 9th century, Christianizing the South Slavs and establishing boundaries between the ecclesiastical jurisdictions of the See of Rome and the See of Constantinople. The East–West Schism then led to the establishment of Roman Catholicism in Croatia and most of Dalmatia, while Eastern Orthodoxy came to prevail in Bulgaria, Macedonia and eventually Serbia. Lying in-between, the mountainous Bosnia was nominally under Rome, but Catholicism never became firmly established due to a weak church organization and poor communications.Medieval Bosnia thus remained a "no-man's land between faiths" rather than a meeting ground between the two denominations, leading to a unique religious history and the emergence of an "independent and somewhat heretical church".

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