Robert Spencer, 2nd Earl of Sunderland, KG, PC (5 September 1641 – 28 September 1702) was an English nobleman and politician of the Spencer family. An able and gifted statesman, his caustic temper and belief in absolute monarchy nevertheless made him numerous enemies. He was forced to flee England in 1688, but later established himself with the new regime after the Revolution of that year. Subsequently, he took on a more disinterested role as an adviser to the Crown, seeking neither office nor favour. He evinced no party loyalty, but was devoted to his country's interests, as he saw them. By the notoriously lax standards of the Restoration Court, his private life was remarkably free from scandal, which won him favour in the more sober post-Revolution state.