Officiator
There is debate among Christian churches as to who can administer baptism. The examples given in the New Testament only show apostles and deacons administering baptism. Ancient Christian churches interpret this as indicating that baptism should be performed by the clergy except in extremis, i.e., when the one being baptized is in immediate danger of death. Then anyone may baptize, provided, in the view of the Eastern Orthodox Church, the person who does the baptizing is a member of that Church, or, in the view of the Catholic Church, that the person, even if not baptized, intends to do what the Church does in administering the rite. Many Protestant churches see no specific prohibition in the biblical examples and permit any believer to baptize another.
In the Roman Catholic Church, canon law for the Latin Rite lays down that the ordinary minister of baptism is a bishop, priest or deacon, but its administration is one of the functions "especially entrusted to the parish priest". If the person to be baptized is at least fourteen years old, that person's baptism is to be referred to the bishop, so that he can decide whether to confer the baptism himself. If no ordinary minister is available, a catechist or some other person whom the local ordinary has appointed for this purpose may licitly do the baptism; indeed in a case of necessity any person (irrespective of that person's religion) who has the requisite intention may confer the baptism By "a case of necessity" is meant imminent danger of death because of either illness or an external threat. "The requisite intention" is, at the minimum level, the intention "to do what the Church does" through the rite of baptism.
In the Eastern Catholic Churches, a deacon is not considered an ordinary minister. Administration of the sacrament is reserved to the Parish Priest or to another priest to whom he or the local hierarch grants permission, a permission that can be presumed if in accordance with canon law. However, "in case of necessity, baptism can be administered by a deacon or, in his absence or if he is impeded, by another cleric, a member of an institute of consecrated life, or by any other Christian faithful; even by the mother or father, if another person is not available who knows how to baptize."
The discipline of the Eastern Orthodox Church, Oriental Orthodoxy and the Assyrian Church of the East is similar to that of the Eastern Catholic Churches. They require the baptizer, even in cases of necessity, to be of their own faith, on the grounds that a person cannot convey what he himself does not possess, in this case membership in the Church. The Latin Rite Catholic Church does not insist on this condition, considering that the effect of the sacrament, such as membership of the Church, is not produced by the person who baptizes, but by the Holy Spirit. For the Orthodox, while Baptism in extremis may be administered by a deacon or any lay-person, if the newly baptized person survives, a priest must still perform the other prayers of the Rite of Baptism, and administer the Mystery of Chrismation.
The discipline of Anglicanism and Lutheranism is similar to that of the Latin Rite Catholic Church. For Methodists and many other Protestant denominations, too, the ordinary minister of baptism is a duly ordained or appointed minister of religion.
Newer movements of Protestant Evangelical churches, particularly non-denominational, allow laypeople to baptize.
In The Church of Jesus Christ of Latter-day Saints, only a man who has been ordained to the Aaronic Priesthood holding the priesthood office of Priest or higher office in the Melchizedek Priesthood may administer baptism.
A Jehovah's Witnesses baptism is performed by a "dedicated male" adherent. Only in extraordinary circumstances would a "dedicated" baptizer be unbaptized (see section Jehovah's Witnesses).
Read more about this topic: Baptism, Meaning and Effects