Richard Molesworth, 3rd Viscount Molesworth, PC (1680 - October 12, 1758) was a British military officer and nobleman. He became a field marshal in the British Army on November 29, 1757, less than a year before his death. He married once, and had one child, Louisa Molesworth . He was colonel of the 5th Regiment of Dragoons, 27th Regiment of Foot, and 9th Regiment of Dragoons.