Arda-Mulissu or Arda-Mulissi (Akkadian: "Arda-Mulišši"), also known as Urad-Mullissu and Arad-Ninlil and known in Hebrew writings as Adrammelech, was an ancient Assyrian prince, the son of the Assyrian king Sennacherib and the older brother of Sennacherib's successor Esarhaddon.