Altes Schloss Beihingen, Medieval castle in Freiberg am Neckar, Germany.

Altes Schloss Beihingen is a castle in Freiberg am Neckar consisting of two distinct structures: a three-story stone building on the north side and a late Gothic half-timbered building on the south side. A surrounding wall encloses the entire complex and defines its overall appearance.

Romanesque predecessor buildings stood on the site before the oldest surviving structure, the Stone House, was built around 1480. The castle belonged to the families von Nothafft and Stammheim until Ludwig von Freiberg bought it in 1534; under the lords of Freiberg it received its present appearance from 1546. The Gemmingen family acquired it in 1710 and added several economic buildings.

The castle's name recalls the lords of Beihingen and the von Freiberg family, who bought it in 1534 and gave it its present form from 1546. The Gemmingen family, owners from 1710, added several farm buildings. Since 1969 the complex has housed the town archive and a library, so the former noble seat is now a public place of records and books.

The complex now houses the city archive, a public library, and eleven apartments that visitors can access. Following a 1969 renovation, the interior spaces are well-maintained and open for exploration by the public.

The only surviving part of the Romanesque predecessor buildings is a tower, and it is preserved only in part. The rest of the complex took its present form after 1546 under the lords of Freiberg, so the medieval fabric sits beside later half-timbered work.