Church of Our Lady, Roman Catholic pilgrimage church in Klášterec nad Ohří, Czech Republic

The Church of Our Lady in Klášterec nad Ohří is a Rococo cemetery church built in 1743–1760 by Johann Christoph Kosch, modeled on St. John of Nepomuk in Prague's New Town. It has an oval presbytery, two rectangular side chapels, two sacristies on the diagonals, and two front towers with onion domes added in 1831. The nave and presbytery carry barrel vaults on clustered pilasters, and the ceiling frescoes of 1789 by Josef Hager depict the Mysteries of the Rosary.

A cemetery chapel stood here from around 1500; the present church was built in 1743–1760 to designs by Johann Christoph Kosch, modelled on Prague's St John of Nepomuk Church, and consecrated on 4 July 1750. The towers were completed in 1831 to plans by Karl Siech, and renovations followed in 1825 and 1967.

The church is dedicated to the Virgin Mary, a devotion deeply rooted in the region. Visitors can see the old wooden statue of the Virgin from the 15th century, around which legends of healings circulate, especially for eye ailments.

The church stands in the western part of Klášterec nad Ohří, by the cemetery on Karlovarská Street. Mass is held on Wednesdays, Thursdays and Fridays at 17:00. The building is a protected cultural monument and is open to the public.

On the cemetery wall by the street stands an octagonal Rococo chapel with semicircular niches, corner pilasters and a lantern, built in 1764–65 by J. C. Kosch. It originally served as a mortuary, not a glass-roofed martyrium.