In recent years, the Catholic Church in England and Wales has introduced the custom of designating Cathedral Deans, formerly known as Cathedral Administrators. However, the term differs slightly from the Anglican usage as Catholic Deans do not necessarily preside over the cathedral chapter (this function belonging to the office of Provost), and are not necessarily required even to be a member of the chapter. More commonly, in places throughout the world where a cathedral chapter has not been erected (as for instance, in the United States, where there are no chapters at all), the term Rector is used for the priest who serves as chief administrator of a cathedral church.
Another important use of the term within the Catholic Church is in the office of the Dean of the College of Cardinals, who serves as senior member of that body. Cardinal Angelo Sodano is the current dean.
In the Church of England and elsewhere in the Anglican Communion, the dean is the chief resident cleric of a cathedral or other collegiate church and the head of the chapter of canons. If the cathedral or collegiate church has its own parish, the dean is usually also rector of the parish. However, in the Church of Ireland the roles are often separated, and most cathedrals in the Church of England do not have associated parishes. In the Church in Wales, however, most cathedrals are parish churches, and their deans are now also vicars of their parishes.
In some parts of the Communion (particularly in the Scottish Episcopal Church and, formerly in some cathedrals in England), the senior resident cleric in a cathedral is a provost. Each diocese of the Scottish Episcopal Church has a dean of the diocese, this is a cleric who, rather than heading the cathedral staff, assists the bishop in the administration of the diocese. In this way, a Scottish Episcopalian dean is similar to an archdeacon in the other member churches of the Communion (a post that does not exist in the Scottish church). In the Anglican Church of Canada, the roles of senior cleric of the cathedral are combined in one person who is referred to as "Rector of Cathedral and Dean of Diocese". Thus, Peter Elliott is Rector of Christ Church Cathedral and Dean of New Westminster.
The style The Very Reverend distinguishes a cleric as a dean (or a cathedral provost). For example, the Very Reverend June Osborne is Dean of Salisbury Cathedral.
Some important deans include the deans of St Paul's, the Canterbury and Westminster Abbey. Westminster Abbey is a royal peculiar, not the seat of any bishop or a cathedral, but is led by a dean. The deans Washington National Cathedral and St. Patrick's Cathedral, Dublin are likewise important clerics in their churches.
In many parts of the Anglican Communion, parishes are grouped together to form deaneries, each being a constituent administrative district of the diocese. Usually, a deanery is led by one of the incumbents of the deanery's parishes, who is called a rural dean, but in more urban areas this has often been replaced by the title area dean or regional dean. Such a dean chairs the meeting of the deanery's clergy (which, like a cathedral, is called a chapter), and may also chair a deanery synod. Rural Deans (and those known by alternative titles) rank as primi inter pares of their chapters, and do not have the seniority of cathedral or diocesan deans.
The head of an Anglican theological college or seminary may also be called a dean (in common with its use in education).