Liechtenstein Castle () is a privately-owned castle near Maria Enzersdorf in Lower Austria, bordering Vienna. It is on the edge of the "Wienerwald" (Vienna Woods). The castle, originally built during the 12th century, was destroyed by the Ottomans in the siege of Vienna in 1529, and again in the Battle of Vienna in 1683, and it remained in ruins until 1884, when it was rebuilt.