In contrast to a usual chaplain (a priest serving a specific group of people), a bishop's chaplain or archbishop's chaplain is chaplain to a bishop or archbishop only. The office exists in the Anglican churches, the American and Scottish Episcopal Churches, and the Roman Catholic Church.
A bishop's chaplain also acts as his private secretary, attends and assists him at all services where he wears his or her mitre and carries his or her crozier, acts as his proxy on some bodies and generally ministers to and prays for him or her.