Nabû-šuma-iškun, inscribed mdnabû-šuma-iškunun, and meaning "Nabû has set a name", was king of Babylon, speculatively ca. 761 - 748 BC, and ruled during a time of great civil unrest. He came from the Bīt-Dakkūri tribe, a Chaldean group apparently unrelated to that of his immediate predecessor, Erība-Marduk.