Franz Jáchym (3 September 1910 – 29 November 1984) was an Austrian prelate of the Roman Catholic Church who served as Coadjutor Bishop of Vienna from 1950–83, and as Titular Archbishop of Maronea.

[1] Three months after ordination, he was sent to Purkersdorf, where he served as parochial vicar of the parish there until returning to work in the chancery of the Archdiocese of Vienna soon after.

The next day, Nazi soldiers stormed and vandalized the Episcopal Palace in Vienna, and Jachym was injured in the violence that ensued.

However, before the ceremony could take place, he stood up and addressed the congregation, saying that he did not "feel worthy of such an honor", before leaving the cathedral, where a car was waiting for him, and returning to his apartment.

Archbishop of Vienna Cardinal Theodor Innitzer was principal consecrator, with bishops Michael Keller and Alois Hudal serving as co-consecrators.

While there are varying accounts as to why Jáchym chose to reject his episcopal consecration in the first place, he did remain loyal to his office and to the archbishop, both Innitzer and his successor, Cardinal Franz König.