Enlil-nādin-šumi, inscribed mdEN.LĺL-MU-MU[i 1] or mdEN.LĺL-na-din-MU,[i 2] meaning “Enlil is the giver of a name,” was a king of Babylon, c. 1224 BC, following the overthrow of Kaštiliašu IV by Tukulti-Ninurta I of Assyria.
Recorded as the 29th ruler of the Kassite dynasty, his reign was a fleeting one year, six months (or perhaps just six months, depending on the reading of MU 1 ITI 6 in the Kinglist A,[i 1][1]) before he was swept from power by the invasion of the Elamite forces under the last king of the Igehalkid dynasty, Kidin-Hutran III.
Enlil-nādin-šumi may well have acceded in the power vacuum left by the capture of his predecessor in the two-year period between Assyrian campaigns, the latter of which led to the sack of Babylon and possibly the imposition of foreign rule.
Shigeo Yamada proposes that Tukulti-Ninurta's rule followed that of the three Kassite successors of Kaštiliašu, beginning with Enlil-nādin-šumi.
[5] The Elamites, under their king Kidin-Hutran, called Kidin-Ḫutrudiš in Chronicle P which describes these events,[i 2] invaded and devastated Nippur and Der, including its temple of Edimgal-kalama, leading their people into captivity and bringing Enlil-nādin-šumi's brief rule to an abrupt end,[6] iṭrudma Enlil-nādin-šumi šarra ukkiš bēlussu, as it puts it, “removed Enlil-nādin-šumi the king, and eliminated his rulership.” He was succeeded by Kadašman-Ḫarbe II, whose reign was equally brief.