in Christianity, the teaching that bishops (bishop) represent a direct, uninterrupted line of continuity from the Apostles of Jesus Christ. According to this teaching, bishops possess certain special powers handed down to them from the Apostles; these consist primarily of the right to confirm church members, to ordain priests, to consecrate other bishops, and to rule over the clergy and church members in their diocese (an area made up of several congregations).

The origins of the doctrine are obscure, and the New Testament records are variously interpreted. Those who accept apostolic succession as necessary for a valid ministry argue that it was necessary for Christ to establish a ministry to carry out his work and that he commissioned his Apostles (Apostle) to do this (Matthew 28:19–20). The Apostles in turn consecrated others to assist them and to carry on the work. Supporters of the doctrine also argue that evidence indicates that the doctrine was accepted in the very early church. About AD 95 Clement (Clement I Saint), bishop of Rome, in his letter to the church in Corinth (First Letter of Clement (Clement, First Letter of)), expressed the view that bishops succeeded the Apostles.

A number of Christian churches believe that the apostolic succession and church government based on bishops are unnecessary for a valid ministry. They argue that the New Testament gives no clear direction concerning the ministry, that various types of ministers existed in the early church, that the apostolic succession cannot be established historically, and that true succession is spiritual and doctrinal rather than ritualistic.

The Roman Catholic, Eastern Orthodox, Old Catholic, Swedish Lutheran, and Anglican churches accept the doctrine of apostolic succession and believe that the only valid ministry is based on bishops whose office has descended from the Apostles. This does not mean, however, that each of these groups necessarily accepts the ministries of the other groups as valid. Roman Catholics, for example, generally regard the ministry of the Eastern Orthodox churches as valid but do not accept the Anglican (Anglicanism) ministry. Some Anglicans, on the other hand, consider episcopacy necessary to the “well-being” but not to the “being” of the church; therefore, they not only accept the ministries of the other groups as valid but also have entered into close associations with Protestant groups that do not accept apostolic succession.