Three missing rulers reveal that Assyria’s official royal chronology may have concealed a more contested political history. For nearly a century, historians have treated the Assyrian King List (AKL) as the standard chronology of Assyria’s rulers, particularly during the empire’s later history. As Edmonds and Frahm write, “early Neo-Assyrian political history was much messier, but also more interesting, than has so far been recognized.” Three missing kings reshape the timelineThe first overlooked ruler adopted the name Tiglath-pileser, following an earlier Assyrian king. With three hidden reigns now reconstructed, the Assyrian King List has become a source of new questions rather than a settled authority.