Sir Roger Jones, 1st Viscount Ranelagh PC (Ire) (before 1589 – 1643) was joint Lord President of Connaught with Charles Wilmot, 1st Viscount Wilmot. He commanded the government forces in Connaught during the Irish Rebellion of 1641 and the beginning of the Irish Confederate Wars defending Athlone against James Dillon until February 1643.