Ecclesiastical titles and styles
Ecclesiastical titles are the formal styles of address used for members of the clergy. Catholic Church. Latin Church clergy. United Kingdom and some other English-speaking countries. The major difference between U.S. practice and that in several other English-speaking countries is the form of address for archbishops and bishops. In Britain and countries whose Roman Catholic usage it directly influenced: In Ireland, and in other countries whose Roman Catholic usage it influenced, all bishops, not archbishops alone, are titled "the Most Reverend" ("Most Rev."). Clergy are often referred to with the title "Doctor" ("Dr."), or  have "D.D. (Doctor of Divinity)" placed after their name, where justified by their possession of such degree. Italy. Similar to, and the source of, most of the U.S. English titles, with some variation: The Philippines. In the predominantly Catholic Philippines, ecclesiastical addresses are adapted from American custom but with modifications. The titles listed below are only used in the most formal occasions by media or official correspondence, save for the simpler forms of address. Post-nomials that indicate academic degree or membership in a religious order are usually included. Eastern Catholic clergy. Although the styles and titles of Eastern Catholic  clergy varies from language to language, in the Greek and Arabic-speaking world the following would be acceptable, but is by no means a full list of appropriate titles. It is notable that surnames are never used except in extra-ecclesial matters or to specify a particular person where many share one Christian name or ordination name. Where not noted, Western titles may be supposed. The following are common in Greek Melkite Catholic usage and in Greek Orthodox usage in the United States. Eastern Orthodox Church. Usage varies somewhat throughout the Eastern Orthodox Communion, and not every church uses every  clerical rank. Surnames are typically not used for archpastors (rank of bishop or above) or monastics.