Schloss Oberhausen, Castle and architectural heritage monument in Bayerisch Gmain, Germany.

Schloss Oberhausen in Bayerisch Gmain is a castle featuring traditional Bavarian architectural elements from earlier centuries. The estate combines various rooms and outdoor spaces that reflect regional building styles and construction methods.

Oberhausen began as a high-medieval noble seat, held by a ministerialis of the Counts of Plain; after the Plain line ended in 1260 it passed to the Archbishopric of Salzburg. In 1567 Rochus von Freymann bought it for 600 gulden, spent 2,000 gulden rebuilding it, and in 1580 obtained noble freedom from Duke Wilhelm V. From 1647 it was an open Hofmark; in the early 19th century it was split into flats, and in 1975 the north wing's roof burned out.

The name Oberhausen derives from a farmstead held by the Counts of Plain, recorded as Gröllngut and later Grill. From 1647 the estate was an open Hofmark, a manor with jurisdiction over surrounding farms. Since the 19th century the building has been divided into flats; it now holds 13 residential units, so the former noble seat is lived in rather than visited.

The castle is a privately divided building with 13 residential units, so the interior is not open to visitors; the horseshoe-shaped wings, the well and the remains of the ring wall can be seen from Schlossgasse, which branches north off Lattenbergstraße in the southern part of Bayerisch Gmain. The castle is one of 17 stops on the roughly 30 km Reichenhaller Burgenweg circular trail through Bad Reichenhall and neighbouring municipalities.

Schloss Oberhausen is one of 17 castles, palaces and fortifications on the Reichenhaller Burgenweg, a circular hiking trail of just under 30 kilometres through Bad Reichenhall and neighbouring municipalities. The route passes the castle in Bayerisch Gmain, whose 13 residential units are privately divided and not open to visitors.