Lieutenant-Colonel Henry Ernest Newcomen King-Tenison, 8th Earl of Kingston (31 July 1848 – 13 January 1896) was an Irish peer and Conservative politician. Born as Henry Newcomen King, he was the younger son of Robert King, 2nd Viscount Lorton and 6th Earl of Kingston, and Anne Gore-Booth. Robert King publicly disowned the child, but his legitimacy was confirmed at the probate court in Dublin in 1870. Educated at Rugby School in Warwickshire, he succeeded to his older brother's titles in 1871. King-Tenison served in the 5th Battalion, Connaught Rangers, reaching the rank of lieutenant-colonel. From 1887 to 1896, he was Representative Peer for Ireland in the House of Lords and from 1888 to 1896 Lord Lieutenant of Roscommon. King-Tenison died, aged 47 in Cairo.