Schloss Herrnau, Baroque country castle in Salzburg-Süd, Salzburg, Austria

Schloss Herrnau is a Salzburg country house of three high storeys, topped by a tall hipped roof, set in a park by the dry bed of the Eschenbach stream. Its stair tower on the south side carries the marble coat of arms of Christani von Rall, with the arms of the Counts Kuenburg above it. The building faces the east portal of Schloss Hellbrunn.

Philip Vermeulen built the initial manor house in 1631, which was later transformed by a chancellor between 1741 and 1744. This renovation reflected changing tastes and the building's growing importance in local society.

The name Herrnau comes from the meadow of the noble lords, first recorded as "die Herrnau" in 1574. The building was also called Christianihof after chancellor Hieronymus Nikolaus Anton Christani von Rall, whose coat of arms hangs above the entrance door.

The castle and its surrounding park are private property of the Clary-Aldringen family and not open to visitors. The building can be viewed only from the outside, from the edge of the path, which offers a view of the facade and the southern stair tower.

Schloss Herrnau is aligned on the east portal of Schloss Hellbrunn, a deliberate axis between the two buildings. The stair tower on the south side carries the marble coat of arms of Hieronymus Nikolaus Anton Christani von Rall, with the arms of the Counts Kuenburg mounted above it.