Accad (ăk'kad), fortress, one of the four cities in the kingdom of Nimrod. Genesis 10:10. It was in the land of Shinar, and George Smith locates it at Agadi, on the Euphrates, north of Babylon. Rawlinson places it at Aker-Kuf, ten miles west by north of Bagdad. Others had regarded it as identical with Clesiphon.