The
Reformed Church in Romania (; ) is the organization of the
Calvinist church in
Romania. The majority of its followers are of
Hungarian ethnicity and Hungarian is the main church language. The large majority of the Church's parishes are located in
Transylvania; according to the 2002 census, 701,077 people or 3.15% of the total population belong to the Reformed Church. 95% of the members were
Hungarian ethnicity.