Arnold von Bruck (also Arnold de Pruck, Arnoldus Brugensis, indicating his origin) (c. 1500 – February 6, 1554) was a Franco-Flemish composer of the Renaissance, 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.
He was born in Bruges, and received at least part of his musical training as a choirboy in the chapel of Charles V, where he probably studied with Marbrianus de Orto. Pierre de La Rue was also a member of the that chapel, which was one then of the most distinguished musical organizations in Europe. Bruck likely left around 1519, and his whereabouts are unknown until 1527, when he became a priest in the Pas-de-Calais, in the Thérouanne diocese. That same year he became court Kapellmeister for Archduke Ferdinand, before he was emperor; Bruck was to retain this post for all of his active career, retiring at the end of 1545.