Wallfahrtskirche Frauenberg, Leibnitz, Pilgrimage church in Leibnitz, Austria.

The Wallfahrtskirche Frauenberg is a Roman Catholic pilgrimage church above Leibnitz, in the Seggauberg cadastral district south of Seggau Castle. The building has a two-bay nave and a single-bay choir with shallow barrel vaults on compressed basket arches, wall pilasters with Rococo capitals, and buttresses inside the church. Both portals of the west facade are dated 1646; the three-storey tower stands at the northwest corner, and a walled cemetery surrounds the church.

The church was first documented in 1170 and is among the oldest structures in the region. After a destructive fire in 1604, the building was substantially rebuilt, and an Italian architect completed major extensions to the western side between 1645 and 1646.

The church is dedicated to the Assumption of Mary (Mariä Himmelfahrt) and is a filial church incorporated into the Stadtpfarre Leibnitz. It stands within a walled cemetery, and the site has drawn pilgrims since the Middle Ages; a chaplaincy was endowed in 1335. The hill itself is called Tempelberg after the Celtic-Roman temple of Isis Noreia excavated there in the early 1950s.

The church is accessible during daylight hours and can be viewed from outside at any time, as it sits on an easily reachable hilltop. Visitors should wear comfortable shoes since the climb to the church involves some steps and uphill walking.

The hilltop where the church stands conceals ancient remains that archaeologists uncovered during the 1950s. The discoveries suggest that a temple may have stood in this location during Roman times, giving the site an even older layer of significance.