Marduk-balāssu-iqbi, inscribed mdAMAR.UTU-TI-su-iq-bi[i 2] or mdSID-TI-zu-DUG4,[i 3] meaning "Marduk has promised his life,"[1]: 205  was the 8th king of the Dynasty of E of Babylon; he was the successor of his father Marduk-zākir-šumi I, and was the 4th and final generation of Nabû-šuma-ukin I's family to reign.

[1]: 192  The kudurru pictured[i 1] is a ṣalmu or commemorative granite stele to Adad-eṭir, the dagger-bearer of Marduk, by his eldest son, where the name Marduk-balāssu-iqbi appears in the context of the donor and possibly may not be the king.

[2] According to his Annals,[i 6][i 7][i 8] Šamši-Adad paused to hunt and kill three fierce lions on the slopes of Mount Epih (Jebel Hamrin) and then proceeded to leave a trail of devastation in his wake, besieging the town of Me-Turnat on the bank of the Diyāla, which he then crossed at high water, to take and burn, the royal city of Qarne.

"[3] Then he despoiled the royal city of Dur-Papsukkal, near Dēr after which he seems to have been successfully countered with a grand alliance of Chaldeans, Elamites, Kassites and Arameans, although the Synchronistic History describes how the Assyrian king "filled the plain with the corpses of (Marduk-balāssu-iqbi's) warriors,"[i 9] and his annals record his capture of chariots, cavalry and some of the camp furniture.

[1]: 209 The second campaign was apparently a more surgical affair, with Šamši-Adad making a bee-line straight for Gannanāti, causing Marduk-balāssu-iqbi to flee to the Diyāla region where he sought refuge initially in Nimitti-šarri (Aḫišānu) but was cornered following the capture of Dēr and led away in chains to Assyria.