Werdenberg Castle is a castle in the municipality of Grabs of the Canton of St. Gallen in Switzerland.

It is a Swiss heritage site of national significance.

[1] It was the original seat of the County of Werdenberg in the Holy Roman Empire.

Zitiervorschlag Lorenz Hollenstein: "Werdenberg", in: Historisches Lexikon der Schweiz (HLS), Version vom 03.10.2013.

This article about a castle in Switzerland is a stub.