Karl Friedrich Albrecht, Margrave of Brandenburg-Schwedt (10 June 1705 – 22 June 1762), a grandson of Frederick William of Brandenburg (the Great Elector) and son of Margrave Albert Frederick of Brandenburg-Schwedt, was a Prussian military officer and the Herrenmeister (grand master) of the Order of Saint John (Bailiwick of Brandenburg).

He took command in Upper Silesia in the spring of 1745, to the special satisfaction of his cousin, King Frederick II of Prussia.

The General German Biography (ADB) describes him as a noble, philanthropic character and lover of the arts and sciences.

For 31 years he governed the knights, the Bailiwick of Brandenburg, and its fiefs as Grand Master of the Order of St. John, having been installed at Sonnenburg in 1731.

After the Treaty of Hubertusburg, Frederick II granted these fortunes to the two officers for whom he had particular gratitude: Hans Sigismund von Lestwitz received the estate of Friedland, and Joachim Bernhard von Prittwitz, who had led the king from the battlefield in the Kunersdorf, received the estate at Quillitz.