Schloss Schwarzenbach, Medieval castle in Schwarzenbach an der Saale, Germany.

Schloss Schwarzenbach is a medieval castle complex located near Ludwigstraße 4 that displays typical features of Bavarian noble residences. The building comprises solid stone walls and retains major structural elements from its original construction.

Schloss Schwarzenbach began as the Unterhof, one of three knightly seats in Schwarzenbach an der Saale, held by the von Hirschberg family from 1381 as a fief of the Burgraves of Nuremberg. In 1706 it passed by marriage to the counts, later princes, of Schönburg-Waldenburg, who built a summer residence on the site. The family held patrimonial jurisdiction until 1836 and founded a hospital in 1845. The building now serves as the town hall.

The building began as the Unterhof, one of three knightly seats in Schwarzenbach, and was rebuilt as a Schloss by the counts of Schönburg-Waldenburg, who used it as a summer residence. The family held patrimonial jurisdiction until 1836 and founded a hospital foundation in 1845. Today the house serves as the town hall, with the "Rathaus" signpost at its corner.

The building is the town hall of Schwarzenbach an der Saale, at Ludwigstraße 4 and 6, and the vertical signpost by its left end points to the Rathaus. It stands on the south-western part of the former Rittergut grounds, next to the neighbouring building at Ludwigstraße 2. Visits are to the municipal offices during their opening hours.

The castle holds dual status as both an architectural monument and an archaeological site, allowing researchers different perspectives on its past. This double classification makes it valuable for studying medieval building techniques and settlement patterns specific to the region.