Ilu-shuma or Ilu-Å¡Å«ma, inscribed DINGIR-Å¡um-ma, (died c. 1974 BC) was a king of Assyria in the early 20th century BC. The length of his reign is uncertain, as the Assyrian King List records him as one of the "six kings whose names were written on bricks, but whose eponyms are not known", referring to the lists of officials after which years were named.
His son, Erishum I, is identified as the king who succeeded him and reigned for 40 years (or 30, depending on the copy of the Assyrian King List), followed by Erishum I's son, Ikunum. He titled himself "vice-regent of Assur, beloved of the god Ashur and the goddess Ishtar." The Synchronistic King List records, "eighty-two kings of Assyria from Erishum I, son of Ilu-shuma, to Ashurbanipal, son of Esarhaddon", in the concluding colophon.