This is a list of people who served as Lord Lieutenant of County Roscommon.
There were lieutenants of counties in Ireland until the reign of James II, when they were renamed governors. The office of Lord Lieutenant was recreated on 23 August 1831. Roscommon was lost to the United Kingdom in 1922 upon the formation of the Irish Free State.
Governors
Edward King, 1st Earl of Kingston: 1772–1797
Maurice Mahon, 1st Baron Hartland (died 1819) Sir Edward Crofton, 2nd Baronet: 1782–1797 Charles Dillon, 12th Viscount Dillon: 1797–1813 Thomas Mahon, 2nd Baron Hartland: –1831 Robert King, 1st Viscount Lorton: –1831 Arthur French: 1821–1831