Schweinsberg Castle or Schweinsberghaus is a fortified house in the municipality of Attinghausen in the canton of Uri in Switzerland.

[1] The Freiherr von Schweinsberg first appears in documents in the 13th century at Wartenstein Castle in the Bernese Emmental.

The Uri branch of the family is traditionally believed to have been critical supporters of the Three Forest Cantons and the early Swiss Confederacy.

As their fortunes grew in Uri, they built a second castle, Schweinsberg, a short distance north of Attinghausen later in the 13th century.

In 1353 they received the a fief that included the Imperial customs post at the Castle of Rudenz and became the Rector over Valais.

The Lords of Rudenz then inherited the Attinghausen lands and Schweinsberg Castle passed through a number of owners.

After passing through a number of other owners, in the late 19th century the Tresch family reacquired the castle and continue to own it to the present.

The original entrance was located part way up the tower on the north side and was reached by a wooden staircase.