Bálint Bakfark (Hungarian: [ˈbaːlint ˈbɒkfɒrk]; in contemporary sources Valentin Bakfark or (from 1565 onward) Valentin Greff alias Bakfark, his name is variously spelled as Bacfarc, Bakfarc, Bakfarkh, Bakffark, Backuart) (1526–30 – 15 or 22 August 1576) was a Hungarian composer of Transylvanian Saxon origin, and lutenist of the Renaissance. He was enormously influential as a lutenist in his time, and renowned as a virtuoso on the instrument.