Paris Lodronscher Primogeniturpalast, Protected palace on Mirabellplatz in Salzburg, Austria.

The Paris Lodronscher Primogeniturpalast is the surviving facade and stair hall of a palace built from 1631 by cathedral architect Santino Solari for Archbishop Paris Lodron, on Mirabellplatz at the corner of Dreifaltigkeitsgasse. The palace was gutted in 1972 and replaced by a reinforced-concrete skeleton for the Mozarteum art college; the Dreifaltigkeitsgasse facade was rebuilt close to its original form, with large rusticated blocks on the ground floor and the attic storey lost in the 1818 fire restored.

Construction began in 1631 under Archbishop Paris Graf von Lodron with architect Santino Solari designing the structure for his brother's descendants. The building survived a major fire in 1818 and later served as a school and briefly as a puppet theater before becoming a university.

The building's name recalls Prince-Archbishop Paris Lodron, who in 1631 established a primogeniture trust and gave the new palace to his brother Christoph. From 1913 Anton Aicher's newly founded Salzburg Marionette Theatre performed in the former gymnasium of the Altes Borromäum. After 1950, once an iconostasis had been installed, the Borromäuskirche held Byzantine-rite services for Catholic and Orthodox Russians and was renamed Petrus-Claver-Kirche.

The building is accessible to university visitors and sits in a central location in the old town, easily reached on foot. The historic facades are visible from the street and can be admired at any time from outside.

Wolfgang Amadeus Mozart composed two Lodron night music pieces for members of this family, connecting the estate to his creative period. These works were written in the 1770s and reveal the close artistic relationship between the composer and the palace owners.