Chapel of Saint Clemens, Baroque chapel in Hradec Králové, Czech Republic.

The Chapel of Saint Clemens is a Baroque chapel in Hradec Králové featuring curved walls and ornamental details characteristic of 18th-century design. The building displays typical features of Bohemian Baroque with carefully crafted interior spaces and decorative architectural elements.

A church of St Clement stood here by 1134; a Gothic chapel from the mid-14th century replaced it, and its southeast and northwest walls, a pointed portal fragment and vault ribs survive. In autumn 1713 Bishop Jan Adam Vratislav of Mitrovice had the dilapidated chapel rebuilt; the shell was finished in 1716, the first Mass said on 23 November 1717 and consecration followed on 14 September 1721. Donors included Pope Clement XI in 1715.

The chapel is dedicated to Saint Clement I, main patron of the Hradec Králové diocese, and its lantern roof is crowned with gilded Petrine keys and a papal tiara with a cross. The interior is an oval space under a dome with an oval lantern, ringed by paired Ionic pilasters dividing the walls into eight fields.

The chapel is located in an easily accessible part of Hradec Králové and is registered as a cultural monument. Visitors should know that opening times can vary and respectful behavior is important as it remains an active place of worship.

The lantern of the dome rises 21 m and is topped with gilded Keys of Saint Peter and a papal tiara with a cross, a reference to Pope Clement XI, who donated to the construction in 1715. The chapel's authorship by Jan Blažej Santini-Aichl is not documented in the sources but inferred from style.