Adolf of Osnabrück was a 13th-century German Cistercian monk and bishop who served as the Prince-Bishop of Osnabrück. Born around 1185 to the noble family of the Counts of Tecklenburg, he initially lived as a canon in Cologne before joining a Cistercian monastery. He is widely remembered for his deep piety and his extensive charitable works, which earned him the title of "Almoner of the Poor."