Frauenthal Castle is an historic building in Frauental an der Laßnitz in the district of Deutschlandsberg in Styria.
These days it is owned by the House of Liechtenstein and used as a high school.
1542 the castle was built as a residence for aristocrats and extended in 1675.
The castle chapel is named after Saint Joseph.
From 1812 to 1820 it saw its economic high under the owner Moritz von Fries.