This is a list of people who served as Lord Lieutenant of Brecknockshire.
After 1723, all Lord Lieutenants were also Custos Rotulorum of Brecknockshire.
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.