Baron Auckland is a title in both the Peerage of Ireland and the Peerage of Great Britain. The first creation came in 1789 when the prominent politician and financial expert William Eden was made Baron Auckland in the Peerage of Ireland. In 1793, he was created Baron Auckland, of West Auckland in the County of Durham, in the Peerage of Great Britain. Eden notably served as Chief Secretary for Ireland, Ambassador to Spain, and President of the Board of Trade. His second son, the second Baron, was also a politician and served as Governor-General of India. In 1839 he was created Baron Eden, of Norwood in the County of Surrey, and Earl of Auckland, in the Peerage of the United Kingdom. However, he never married, and the barony of Eden and the earldom became extinct on his death while he was succeeded in the baronies of Auckland by his younger brother, the third Baron. He was Bishop of both Sodor and Man and Bath and Wells. The titles descended from father to son until the death of the sixth Baron in 1941. He was succeeded by his cousin, the seventh Baron. He was the son of George Eden, third son of the fourth Baron. He was succeeded by his younger brother, the eighth Baron. As of 2013, the titles are held by the latter's grandson, the tenth Baron, who succeeded his father in 1997.

The Peerage of Ireland consists of those titles of nobility created by the English monarchs in their capacity as Lord or King of Ireland, or later by monarchs of the United Kingdom of Great Britain and Ireland. It is one of the five divisions of Peerages in the United Kingdom. The creation of such titles came to an end in the 19th century. The ranks of the Irish peerage are duke, marquess, earl, viscount and baron. As of 2016, there were 135 titles in the Peerage of Ireland extant: two dukedoms, ten marquessates, 43 earldoms, 28 viscountcies, and 52 baronies. However, these titles have no official recognition in the Republic of Ireland, with Article 40.2 of the Constitution of Ireland forbidding the state conferring titles of nobility and stating that an Irish citizen may not accept titles of nobility or honour except with the prior approval of the Irish government.