Shamshi-Adad II orŠamši-Adad II, inscribed^m(d)Šam-ši-^dIM, was an OldAssyrian king who ruled in the mid-second millennium BC,c. 1585–1580 BC. His reign falls within the "dark age" period of Assyrian history from which written records are scarce.

There are no extant contemporary sources witnessing his reign. He was the son and successor ofErishum III and ruled for six years (6 MU.MEŠ) according to theKhorsabad^{[i 1]} and theSDAS^{[i 2]} copies of theAssyrian Kinglist, where he appears as the 57th name (theNassouhi Kinglist^{[i 3]} is poorly preserved in this part). He was succeeded by his sonIshme-Dagan II.^[2]

TheSynchronistic Kinglist^{[i 4]} somewhat implausibly gives eight differentearly Kassite rulers as his contemporaries although only the first five and part of the sixth are legible. These are Agum IGI ašu, Kaštil[...]šu, Abirataš, Kaštilyašu, Tazzigurumaš, and Harba[...]. Brinkman argues that this is a stylistic device and points to the previous reign of Irišum III who is shown as contemporary to Ea-gâmil, the last king of theSealand Dynasty and Gandaš, the first of theKassite Dynasty, despite theChronicle of Early Kings^{[i 5]} recording that Ea-gâmil fled ahead of the army ofUlam-Buriaš, possibly the 12th Kassite king, at least a hundred years later.^[3]

• 16th-century BC Assyrian kings

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