Herzogshof, Medieval ducal residence at Alten Kornmarkt, Regensburg, Germany

Herzogshof am Alten Kornmarkt is the eastern wing of the former ducal palace, a three-storey building with a steep brown tiled roof and dormer windows, its yellow facade flanked by dark louvered shutters. A large round archway opens at ground level, with round-topped windows above it. A low wing with a brown tiled roof adjoins on the left. The building is linked to the Römerturm by a 1937 archway.

A ducal residence emerged here in the 6th century under the Agilolfings, and in the 9th century the site became a Carolingian and Ottonian royal palace. Around 1180 the Wittelsbachs rebuilt it as a ducal palace with the Herzogssaal, occupied by Duke Ludwig in 1196. After the court moved to Munich, the western wings were demolished in 1937, leaving only the eastern section.

The name Herzogshof recalls the Wittelsbach dukes who made this their residence around 1200. The building later served as a Bavarian customs office, salt office and forestry office; old city views label its tower 'Bayerische Maut' (Bavarian toll). A coat of arms panel, originally on the east facade around 1600, demonstrated Bavarian sovereignty.

The location sits near the cathedral and is easily reached on foot from central areas of the old town. The building can be viewed from outside, with the restored eastern section showing the main features.

The building's tower appears on old city views labelled "Bayrische Maut", because after the Wittelsbach court left Regensburg the complex served as the Bavarian customs office, later also as salt and forestry offices. The 1937 archway linking it to the Römerturm is a modern addition.