- In ancient Rome, a member of one of two distinct classes of magistrates:
- In the middle ages, one appointed by the Pope or by a Roman Catholic bishop to announce the granting of indulgences, of which the special condition was the giving of alms to the church.
- A treasurer; one charged with the collection and care of dues.
- An officer who had the management of the public treasure; a receiver of taxes, tribute, etc.; treasurer of state.
- Alternative spelling of <xref>quaestor</xref>.