Below is a list of people who have served as Lord Lieutenant of Northamptonshire.
Since 1735, all Lords Lieutenant have also been Custos Rotulorum of Northamptonshire.
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 often retired at age 75.