The König Ludwig GmbH & Co. KG Schlossbrauerei Kaltenberg is a brewery with headquarters located in Fürstenfeldbruck in Upper Bavaria. Their slogan, "Bier von königlicher Hoheit," or "Beer of royal highness," refers to the brewery's heritage which can be traced back through the Kingdom of Bavaria. The current proprietor, Prince Luitpold of the House of Wittelsbach, is the great-grandson of the last King of Bavaria, Ludwig III.
The House of Wittelsbach began the first brewery in 1260. 32 years later, Herzog Rudolf built the Schloss Kaltenberg, which houses a part of the brewery's facilities today. The brewery as it exists today was opened in 1870. As of 2004, production was up to 340,000 hectoliters annually, of which only 100,000 are produced at Schloss Kaltenberg.