This is a list of people who served as Lord Lieutenant of County Roscommon.The office was created on 23 August 1831.
The 1st Viscount Lorton: 7 October 1831 – 20 November 1854
The 1st Baron de Freyne: 18 December 1854 – 29 September 1856
Edward King Tenison: 4 December 1856 – 19 June 1878
Edward Robert King-Harman: 5 October 1878 – 10 June 1888
The 8th Earl of Kingston: 25 July 1888 – 13 January 1896
Charles Owen O'Conor, The O'Conor Don: 5 March 1896 – 30 June 1906
Charles O'Conor Don: 5 September 1906 – 23 February 1917
William John Talbot: 25 August 1917 – 1922
Roscommon was lost to the United Kingdom in 1922 upon the formation of the Irish Free State.
