The Serbs of Croatia or Croatian Serbs constitute the largest national minority in Croatia. The community is predominantly Eastern Orthodox Christian by religion, as opposed to the Croats who are Catholic.

Eastern Orthodoxy in Croatia refers to adherents, religious communities, institutions and organizations of Eastern Orthodox Christianity in Croatia. It is the second-largest religious denomination in Croatia, behind the Roman Catholic Church. Over 128 000 people, forming 3.32% of the total Croatian population, are Eastern Orthodox Christians (2021).