Burg Ramsberg, Medieval castle in Donzdorf, Germany.

Burg Ramsberg is a castle built on a hilltop near Donzdorf, featuring a hall dating to the 13th century with a ribbed vault supported by eight columns. The structure combines medieval fortification design with later additions in the Gothic style.

The castle was built around 1200 and first documented on September 22, 1270, when a local nobleman made a donation concerning a serf to the site. This early record shows it served as a seat of local power during the medieval period.

The castle chapel, built in 1560, was first dedicated to Saint Margaret before being rededicated to Saint Martin. It is of late Gothic origin and was restored after a fire in the 1960s.

The castle stands at 489 metres on a spur of the Rehgebirge above the former Reichenbach unter Rechberg, now part of Donzdorf. It is privately owned and run as a stud farm, so the grounds and buildings are not open to visitors; access is by local roads only.

Since 2000 the castle has operated as a horse breeding facility, giving it a living function rather than serving only as a historical monument. It was added to the Route of the Staufer in 1977, connecting it to a regional network of medieval sites across southern Germany.