Hietzinger Pfarrkirche, Parish church in Hietzing, Austria

The Hietzinger Pfarrkirche is a Roman Catholic parish and pilgrimage church dedicated to the Nativity of Mary, standing on a alluvial fan of the Lainzerbach stream near its mouth into the Wien river. Its west facade and bell tower were rebuilt in neo-Gothic style by Carl Roesner between 1863 and 1865, and the facade carries six saint sculptures by Johann Meixner and Andreas Halbig, including Christopher with the Christ Child, Leopold, Augustine and Agnes of Rome. The interior centres on a monumental Baroque high altar by Matthias Steinl, given its present form in 1751, showing Mary in the crown of a stylised tree with four freed men at her feet.

The building was constructed between 1414 and 1419 and suffered damage during the Turkish sieges of 1529 and 1685, requiring repairs and reconstruction work. These events left marks on the structure that required restoration in the following years.

The high altar, built by Matthias Steinl in 1698 and given its present form in 1751, shows Mary in the leafy crown of a stylised tree, with four bound Hietzing men at her feet whose fetters are already broken. It recalls the legend that men tied to a tree by the Turks were saved after calling on the Mother of God, whose statue had been hidden in that tree. Two gilded pairs of statues flank the altar: Joachim and Anna, and Elisabet and Zacharias.

The church stands on the alluvial fan of the Lainzerbach stream near where it once flowed into the Wien river, in Hietzing in Vienna's 13th district. It is a listed building and since 1996 has lain within the buffer zone of the UNESCO World Heritage site of Schönbrunn Palace and Park. The parish belongs to Deanery 13 of the Archdiocese of Vienna.

On 23 April 1708 the church hosted the proxy wedding of Charles VI and Elisabeth Christine of Brunswick-Wolfenbüttel; his brother Joseph I acted as procurator. The bride was represented in Vienna while the groom was elsewhere, a Habsburg practice for dynastic matches.