Arnold von Bruck (also Arnold de Pruck, Arnoldus de Bruck, Arnoldus Brugensis, indicating his origin) (c. 1500 – 6 February 1554) was a Franco-Flemish composer of Renaissance music, active in several Habsburg courts. He was one of the most famous and influential composers in German-speaking areas during the first half of the 16th century, the period of the Protestant Reformation; however, he seems to have remained a Roman Catholic.