Burg Sulzbach, Medieval castle in Sulzbach-Rosenberg, Germany.

Burg Sulzbach was a medieval castle on a long terrace spur at the eastern edge of the Franconian Jura, divided into a main castle of about 1.5 hectares and an outer bailey of roughly 3 hectares. Its core lay in a stream loop about 20 to 30 metres above the Rosenbach valley. Today the main castle area is occupied by the palace of the Counts Palatine of Neuburg-Sulzbach, built mainly from 1582, and the St. Hedwig convent founded in the second half of the 18th century.

Burg Sulzbach is not mentioned in any written source from the 8th to 13th century; the earliest record of a castle at Sulzbach dates from 1329. The site was probably founded in the first half of the 11th century, according to local legend. From the late 7th century the area lay at the meeting point of Agilolfing, Frankish-Carolingian and Bohemian interests, and its iron ores shaped the region's economy into the 20th century.

The name Sulzbach comes from the site itself: the castle stood in a loop of the Rosenbach stream, about 20 to 30 metres above the valley, and the place grew at a crossing of north-south routes and the road to Bohemia. No written source mentions the castle between the 8th and 13th centuries; the first record of a castle here dates from 1329.

The former castle area lies within the grounds of the Upper and Lower Sulzbach palaces and the St. Hedwig convent in the old town of Sulzbach-Rosenberg. The main castle occupied a terrace spur about 20 to 30 metres above the Rosenbach valley; the oldest fortification of the roughly 3-hectare outer bailey was first examined archaeologically in 2008. The site is recorded as a protected monument and as an archaeological find site in the Bavarian Atlas.

The Bavarian monument register lists the hill as a site of finds from the Middle Bronze Age, the Urnfield period and the late Hallstatt to early La Tène era, so the spur was used long before the medieval castle. The castle itself appears in no written source between the 8th and 13th centuries; the earliest mention of a castle at Sulzbach dates only from 1329.