Sir Robert Dillington, 2nd Baronet (c. 1634 – 25 April 1687) was an English politician who sat in the House of Commons at various times between 1659 and 1685. Dillington was the son of Robert Dillington of Mottistone and grandson of Sir Robert Dillington, 1st Baronet. He matriculated at Queen's College, Oxford on 9 December 1653 and was of Gray's Inn in 1654. In 1659, Dillington was elected Member of Parliament for Newport in the Third Protectorate Parliament. He was elected MP for Newport in the Convention Parliament in 1660.