Adolf Holl (13 May 1930 – 23 January 2020) was an Austrian Catholic writer and theologian. He lived in Vienna, where he was Chaplain of the University of Vienna and a lecturer in its Department of Catholic Theology. Because of conflicts with Church authorities, he was suspended from his teaching and priestly duties. He wrote many books, including Jesus in Bad Company and The Last Christian: A Biography of Francis of Assisi.