The Liegnitz Ritter-Akademie or knight academy was a school for the sons of the silesian aristocracy and landed gentry established in early 18th century, shortly after the signing of the Treaty of Altranstädt (1707). The school was erected in the Habsburg ruled town of Liegnitz, and at least in part was founded from money earlier collected by Duke George Rudolf of Liegnitz, who had planned school of this type in his Capital.
