Franz Josef Rudigier was an Austrian Roman Catholic prelate and served as the Bishop of Linz from his appointment in 1853 until his death. Much of his local diocese grew due to his vigorous in promoting evangelic zeal and fundamental religious principles. He became the intellectual figurehead for Catholics in their struggle with liberalism. He promoted the Christian press and took a visible stand defending the 1855 concordat, when liberals annulled it without papal consultation in 1870. A beatification process for Rudigier was initiated under Pope Pius X in 1905 and he was titled as a Servant of God. The confirmation of his life of heroic virtue allowed for Pope Benedict XVI to name him as Venerable in 2009.

The Diocese of Linz is a Latin Church diocese of the Catholic Church. It is a suffragan of the Archdiocese of Vienna, Austria.