The Reformed Church in Sub-Carpathia is the oldest Protestant Church in Ukraine. It was founded in 1921, when the Sub-Carpathian region became a part of the Czech-Slovak Republic. During the Soviet era, the Church lost its legal status and many church-owned properties were seized and privatized. The structure of the Church did not exist, atheist propaganda was promoted and many pastors were deported. Eventually, the fall of the Soviet Union brought relief, and with the help of Church sponsors, schools and churches were re-opened.

The Reformed Church in Sub-Carpathia currently has around 70 000 members, most ethnic Hungarians, in nearly 100 parishes. It is organized into three Presbyteries: the Beregi, Ugocsai and Ungi Presbyteries.

It is a constituting member of the Hungarian Reformed Church, which was established in May 2009 and consists of Hungarian-speaking reformed communities in the Carpathian Basin. It is also a member church of the World Communion of Reformed Churches.

The Official name of the church in Ukrainian would be „Transcarpathian”, as this region lies beyond the Carpathian Mountains, seen from Kijev. In Hungarian, the commonly used term nevertheless reads “Sub-Carpathian”. We use the two terms interchangeably.