The Church of Saint John the Baptist (Belarusian: Касьцёл Сьвятога Яна Хрысьціцеля, Polish: Kościół Świętego Jana Chrzciciela) is a Catholic parish church in the village Kamai in the Pastavy District of Vitebsk Region, Belarus.

In the Great Northern War the church got under cannon fire from the Sweden army and was damaged again.

During the reconstruction of the building cannonballs were planted inside the walls as a tribute to the tragic war events.

The church is a beautiful example of the defensive Gothic architecture once popular in the Grand Duchy of Lithuania.

This site was added to the UNESCO World Heritage Tentative List on January 30, 2004, in the Cultural category.