Amenhotep I (ä´mĕnhō´tĕp, ā´–) or Amenophis I (ă´mĕnō´fĬs), fl. 1570 BC, king of ancient Egypt, of the XVIII dynasty; son and successor of Amasis I. His chief exploits were military. He pushed southward into Nubia and reestablished Egypt's boundary at the Second Cataract of the Nile, as previously fixed by Sesostris III. He invaded Syria as far as the Euphrates. His successor, Thutmose I, was not his son.