Dedicated to the patron saint of Vienna, this small church was established in 1679, and its current appearance dates to the first part of the 18th century. The building is on top of 425-m-high Leopoldsberg, with lovely views of Vienna and the surrounding area. Following restoration work of the nearby medieval fortress, the church re-opened to the public in 2018.

The Leopoldsberg church (also church of St. Leopold at Leopoldsberg, German: Leopoldsbergkirche) is a Roman Catholic quasi-parochial church in the Kahlenbergerdorf area of Döbling (the 19th district of Vienna). It is dedicated to Saint Margrave Leopold and is attached to the parish church of Nussdorf.

After being closed for a long time for repairs, the church was opened to the public in June 2018.