Schloss Marquardt, Heritage château in Marquardt district, Potsdam, Germany.

Schloss Marquardt is a multi-winged palace 15 km northwest of central Potsdam in the Marquardt neighbourhood. Its tan stucco walls carry steep red-brown tiled roofs; the left wing has a hipped roof with dormers, and a central rounded section with a small green copper dome stands beside a single-storey gallery of continuous multi-pane windows and a balustrade. A square tower with a green copper roof and a loggia near its top rises on the right, above a wing of rectangular windows, and stone steps lead up to a terrace on the left.

The estate was first recorded in 1313 under the Slavic name Skoryn, later Germanised to Schorin. In 1660 Moritz Andreas von Wartenberg merged two farms into a knight's estate. After the last Wartenberg died childless in 1704, Marquard Ludwig von Printzen bought it and in 1708 received royal permission to rename it Marquardt after his first name. A fire in 1791 destroyed parts of the manor and farmyard.

The village was first recorded as Skoryn in 1313, later Germanised to Schorin; the name Marquardt comes from Marquard Ludwig von Printzen, who was allowed to rename the estate after his own first name. In 1843 the parish priest changed the spelling from Marquard to Marquardt. Theodor Fontane stayed here three times and was the first to call the manor a Schloss.

The palace operates as a private event venue and is not always open to the public, so visitors should check in advance whether the grounds are accessible on their intended visit date. Planning ahead helps avoid disappointed trips to the location.

The palace grounds include the site of the Blaue Grotte, a room with double walls and coloured lighting that General Hans Rudolf von Bischoffwerder, a Rosicrucian, had built into a wooded hill after 1795 for séances staged before King Frederick William II. A later owner demolished it between 1860 and 1870 as unsafe, and its exact location is no longer known.