An altar server is a lay assistant to a member of the clergy during a Christian liturgy. An altar server attends to supporting tasks at the altar such as
fetching and carrying, ringing the altar bell, helps bring up the gifts, brings up the book, among other things. If young, the server is commonly called
an altar boy or altar girl. While the function of altar server is commonly associated with children, it can be and is carried out by people of any age or dignity.