Adam Haldane-Duncan, 2nd Earl of Camperdown (25 March 1812 – 30 January 1867), styled Viscount Duncan between 1831 and 1859, was a British nobleman and politician.
He was the eldest surviving son of Robert Haldane-Duncan, 1st Earl of Camperdown and the former Janet Hamilton-Dalrymple (1783–1867).
His paternal grandparents were the former Henrietta Dundas and Adam Duncan, 1st Viscount Duncan,[3] a well known British admiral who defeated the Dutch fleet off Camperdown in what is considered one of the most significant actions in naval history.
[6] Through his brother Hew, he was uncle to Georgiana Wilhelmina Mercer-Henderson (wife of the 7th Earl of Buckinghamshire),[7] and through his sister Lady Henrietta, he was uncle to Wilhelmina Frederica Allen (wife of Thomas Graves Law, a grandson of the 1st Baron Ellenborough).
[8] He first entered parliament as a member for Southampton in 1837, which seat he held until 1841 when he exchanged it for Bath.