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. Islam In Islam it is used in Ahmadiyya Sunni for the Fifth Caliph Mirza Masroor Ahmad. It is used in the Dawoodi Bohra sect of Ismaili Shia for the office of Da'i al-Mutlaq, Syedna. Syedna Mufaddal Saifuddin is recognized by most Dawoodi Bohras as the 53rd Da'i al-Mutlaq. See also Honorifics English honorifics Honorifics (linguistics) Papal titles References Ecclesiastical styles Papal titles Royal styles Religious honorifics