Archbishop ad personam is a title given by the Pope to certain bishops. It is an honorary title that allows a bishop to be called an archbishop, even if he is not in charge of an archdiocese.^[1][2][3]

Usually, an archbishop is in charge of an archdiocese, which is a larger or more important diocese. Sometimes a bishop who is not in charge of an archdiocese is given the title "archbishop" as a special honor. This can happen because of the bishop's work, his role in the Church, or other reasons decided by the Pope.^[4][1][3]