Marcus Beresford may refer to:Marcus Beresford, 1st Earl of Tyrone (1694–1763), Irish MP for Coleraine Marcus Beresford (1764–1797), Irish MP for Dungarvan, grandson of the above Marcus Beresford (1764–1803), British Army general and MP for St Canice and Swords, grandson of the Earl of Tyrone Marcus Beresford (1800–1876), British Army general and Whig MP for Northallerton and Berwick-upon-Tweed, great-grandson of the Earl of Tyrone Marcus Beresford (bishop) (1801–1885), Archbishop of Armagh and Primate of All Ireland, great-grandson of the Earl of Tyrone Marcus Beresford (1818–1890), British Conservative politician, MP for Southwark Lord Marcus Beresford (1848–1922), British equerry and racing manager to King Edward VII, great-great-grandson of the Earl of Tyrone Marcus Beresford, 7th Baron Decies, Anglo-Irish peer, great-great-great-great-grandson of the Earl of Tyrone