Church of the Holy Trinity, Baroque church in Žacléř, Czech Republic

The Church of the Holy Trinity is a massive single-nave Baroque church on a cross-shaped plan in Žacléř, at the junction of J. E. Purkyně and Mladých horníků streets below Rýchorské náměstí. Its three-axis facade ends in a carved pediment from which a slender tower rises; the three-sided presbytery is flanked by symmetrical sacristies with oratories above.

A church likely stood on this site in the 14th century and was later replaced by a Renaissance building. In 1732 the Jesuit order, then owner of the Žacléř estate, had it rebuilt in high Baroque form, possibly reusing older structures. Further alterations followed in 1753, and in 1912 the mansard roof was replaced by a simple metal-clad hipped roof.

The side chapel, sometimes called the Loretto chapel, holds a glass altar that legend attributes to the town's glassmakers; the story is not documented. The altarpieces carry sculptures by Jiří František Pacák, part of the uniform furnishings made between 1739 and 1742.

The church sits at the town center and is easily reached on foot from the main square, with parking available nearby for visitors. The best time to visit is outside of service times when the building is open to visitors.

In the side chapel, sometimes called the Loretto chapel, stands a glass altar that legend attributes to the glassmakers of Žacléř; the story is not documented. The church's uniform furnishings date from 1739–1742, and the altar sculptures are by Jiří František Pacák.