Schloss Ronneburg, Medieval castle and museum in Ronneburg, Germany.

Schloss Ronneburg is a castle complex on a steep west-facing rock, divided into a rear part with the Rittersaal and cellars and a front historicist part with a tower. The Romanesque archway is the only entrance, and the St. Georg chapel adjoins the 1889 court building.

A late-Sorbian settlement existed here before 900, later fortified with a palisade on the castle hill. From the 11th century the Vögte of Weida, imperial ministeriales, administered the area as Lords of Ronneburg and had expanded the castle before 1200. In 1244 it passed to the Vögte of Plauen, and after the Vogtland War (1354–1357) it became a Wettin fief. From 1548 it served as the administrative seat of the Ernestine Amt Ronneburg.

The castle displays collections related to crafts and mining that reflect the economic life of the region over time. Visitors can observe how inhabitants relied on the resources found in the surrounding area.

The main entrance is on the east side, facing the town; a moat once separated the complex from the town here. The site lies on a rock that drops steeply to the west, and the castle courtyard and garden were redesigned for the 2007 Federal Garden Show. The museum opened in February 1993 in the castle rooms.

The tower contains mineral collections and detailed models of the city's growth showing different building phases made by local students. These handcrafted representations reveal how the settlement evolved across different periods.