This is a list of people who have served as Lord-Lieutenant of Armagh.
There were lieutenants of counties in Ireland until the reign of James II, when they were renamed governors.
Deputy lieutenants support the work of the lord-lieutenant.
There can be several deputy lieutenants at any time, depending on the population of the county.
Their appointment does not terminate with the changing of the lord-lieutenant, but they usually retire at age 75.