Robert Henley Henley, 2nd Baron Henley (3 September 1789 – 3 February 1841) was a British lawyer and Member of Parliament.
Born Robert Henley Eden, he was the son of Morton Eden, 1st Baron Henley, and Lady Elizabeth Henley, youngest daughter of Lord Chancellor Robert Henley, 1st Earl of Northington. He served as a Master in Chancery from 1826 to 1840 and between 1826 and 1830 he also sat as Member of Parliament for Fowey. In 1830 he succeeded his father as second Baron Henley but as this was an Irish peerage it did not entitle him to a seat in the House of Lords. The following year Lord Henley assumed by Royal licence the surname of Henley in lieu of Eden in commemoration of his maternal ancestors and the same year he published a biography of his maternal grandfather, entitled Memoir of the Life of Robert Henley, Earl of Northington, Lord High Chancellor of Great Britain.
Lord Henley married Harriet, daughter of Sir Robert Peel, 1st Baronet, and sister of Prime Minister Sir Robert Peel, 2nd Baronet, in 1823. He died in February 1841, aged 51, and was succeeded in the barony by his son Anthony. Lady Henley died in 1869.