churchwarden - an officer in the Episcopal church who helps a parish priest with secular matters

deacon, Protestant deacon - a Protestant layman who assists the minister

elder - any of various church officers

functionary, official - a worker who holds or is invested with an office

sacristan, sexton - an officer of the church who is in charge of sacred objects

verger - a church officer who takes care of the interior of the building and acts as an attendant (carries the verge) during ceremonies

vestryman - a man who is a member of a church vestry

vestrywoman - a woman who is a member of a church vestry