Franz König was an Austrian Cardinal of the Catholic Church. He served as archbishop of Vienna from 1956 to 1985, and was elevated to the cardinalate in 1958. The last surviving cardinal elevated by Pope John XXIII, he was the longest-serving and second-oldest cardinal worldwide at the time of his death.

The Archbishop of Vienna is the prelate of the Roman Catholic Archdiocese of Vienna who is concurrently the metropolitan bishop of its ecclesiastical province which includes the dioceses of Eisenstadt, Linz and St. Pölten.