[1] It is also an official title for Oriental Orthodox patriarchs, and used to refer to religious leaders in Islam, Buddhism, and Bon.

been used for religious leaders from other traditions, including Buddhism[2][3] leaders such as the Thanlyin Mingyaung Sayadaw, Ashin Nandamalabhivamsa, Dalai Lama,[4] the Gyalwa Karmapa,[5] the Je Khenpo in Bhutan,[6] and Shinso Ito of the Shinnyo-en branch of Shingon Buddhism.

[8][9] His Holiness (Latin: Sanctitas) is the official style used to address the Roman Catholic Pope.

In the Eastern Orthodox Church, the ecumenical patriarch of Constantinople has the title of His All Holiness (abbreviation HAH).

It is also used for certain other Eastern patriarchs, notably those who head a church or rite which recognizes neither Rome's nor Constantinople's primacy.