Church of Saint John the Baptist in Kamai, Gothic Catholic church in Kamai, Belarus

The Church of Saint John the Baptist in Kamai is a fortified Gothic and Renaissance church with a square nave, a semicircular apse and a sacristy. Its main facade is flanked by two cylindrical towers 16 m high and over 5 m in diameter, with walls up to 2 m thick and round embrasures. The exterior has almost no decoration except four arched niches on the upper facade.

Founded in 1603 by Jan Rudomin Dusicki and Jan Hajecki, the church was completed and opened in 1606. Russian troops burned it during the 1654–1667 war, and Swedish cannon fire damaged it in the Great Northern War; it was reconsecrated in 1673. A south chapel with a crypt was added in 1778, and the church remained active through the Soviet period.

The parish has never closed since its foundation in 1603, remaining active through the Soviet period, when most churches in Belarus were shut. Some accounts link this to the local authorities' regard for the rector, Father Bulka, who during the war saved a well-known partisan from the Germans. The miraculous icon of the Mother of God, painted in Kraków around 1610, is the object of pilgrimage; its silver cover was stolen in 1995.

The building operates as an active parish church and is open to visitors, particularly during service times. Remember that it remains a functioning place of worship where respectful conduct is expected.

The cannonballs set into the walls are Swedish shot from the Great Northern War (1700–1721), not the 18th century generally: they were placed there during the rebuilding after Swedish artillery damaged the church. The same walls, up to two metres thick, belong to a fortified church of the former Grand Duchy of Lithuania.