This is a list of people who served as Lord Lieutenant of Merionethshire.
After 1762, all Lord Lieutenants were also Custos Rotulorum of Merionethshire.
Deputy Lieutenants traditionally supported the Lord-Lieutenant.
There could be several deputy lieutenants at any time, depending on the population of the county.
Their appointment did not terminate with the changing of the Lord-Lieutenant, but they usually retired at age 75.