John Beresford, 2nd Baron Decies (20 January 1774 – 1 March 1865), later Horsley-Beresford, was an Anglo-Irish peer and clergyman.
Among his extended family were uncles George Beresford, 1st Marquess of Waterford and Hon.
[2] Upon his father's death on 6 September 1819, he succeeded as the 2nd Baron Decies as his elder brother, Brig.-Gen. Marcus Beresford had died unmarried in 1804.
[1][3][4] Following his marriage, he adopted the additional surname of Horsley in accordance with the terms of his wife's inheritance.
Lord Decies died on 1 March 1865 and was succeeded in the barony by his son William.