Blessed Hartmann of Brixen was a German prelate of the Catholic Church, who served as the Bishop of Brixen from his appointment in 1140 until his death. Hartmann served alongside the Order of Saint Augustine - who oversaw his education - and he managed certain aspects of their order despite not being part of that congregation. He also supported Pope Alexander III during his struggle with Frederick Barbarossa and also earned the favor of the latter despite Hartmann's views of the schism.