Pfarrkirche Heiligste Dreifaltigkeit, Catholic church in Schwarzenberg, Austria.

The Pfarrkirche Heiligste Dreifaltigkeit is a long Baroque church on Schwarzenberg's village square, enclosed by a cemetery wall. Its nave has four flat-arched windows on the north side and five on the south; the lower, recessed choir abuts a north tower with a pyramidal top. A 1958 mosaic of the Risen Christ by Martin Häusle decorates the gable facing the square.

Schwarzenberg belonged to the monastery of St. Gallen from 1272 and to Mehrerau from 1464. The first church was built over the grave of the blessed Ilga; after a fire in 1755 it was rebuilt by 1757 and consecrated in 1760. In 1920 Fritz Fuchsenberger's plans extended it westward with the "Weibertürmle" and a war memorial.

The church keeps works by two local painters: Angelika Kauffmann painted the 13 apostle pictures in 1757, the only wall paintings she made, and her father Joseph Johann Kauffmann painted the Stations of the Cross the same year. The high altarpiece, the Coronation of Mary, was painted by Angelika Kauffmann in Rome between 1799 and 1801 and set in place in 1802.

The church is open during services, with the main Sunday mass held in the morning. Visitors with questions about opening times or the schedule should contact the parish office for current information.

The painter Angelika Kauffmann, born in Schwarzenberg in 1741, painted the 13 apostle pictures in the nave in 1757 after designs by Giovanni Battista Piazzetta; they are her only wall paintings. Her father Joseph Johann Kauffmann painted the Stations of the Cross the same year, and her altarpiece of the Coronation of Mary, made in Rome 1799–1801, was set into the high altar in 1802.