Kostel Narození Páně, Baroque church in Prague, Czech Republic.

The Church of the Nativity of Our Lord is a single-nave Baroque church measuring 27.5 by 10.5 metres, built in 1722–1737 by Kilián Ignác Dientzenhofer with Jan Jiří Achbauer. It closes with a semicircular choir to the east and a musical gallery with a Helwig organ to the west. Three vault bays rest on pilasters clad in artificial marble by Jan Hennevogel.

The church was built in 1722–1737 as the last structure of the Prague Loreta complex, created by enlarging the earlier Chapel of St. Anne. The design is by Kilián Ignác Dientzenhofer, with Jan Jiří Achbauer also taking part in construction. A covered ambulatory links it to the Capuchin monastery at the Church of Our Lady of the Angels, which administers the Loreta.

The church is entered only through the Loreta's cloister, and its side altars hold the skeletons of the first martyrs St Felicissimus and St Marcia, covered by Spanish costume and wax masks. Two other altars are dedicated to St Agatha, patron of breast illness, and St Apollonia, patron of toothache, with Rococo paintings by Antonín Kern.

The church stands inside the courtyard of the Prague Loreta, on the axis east of the Loretánská kaple Panny Marie, and can be entered only from the ambulatory. The covered ambulatory also links it to the Capuchin monastery at the Church of Our Lady of the Angels.

The church is entered only through the Loreto's cloister, not from the courtyard. Its four side altars hold the skeletons of Saints Felicissimus and Marcia, displayed but covered by Spanish costume and wax face masks. The two other altars are dedicated to Saint Agatha and Saint Apollonia.