Marduk-apla-iddina I, contemporarily written in cuneiform as 𒀭𒀫𒌓𒌉𒍑𒋧𒈾 dAMAR.UTU-IBILA-SUM-na and meaning in Akkadian: "Marduk has given an heir", was the 34th Kassite king of Babylon c. 1171–1159 BC. He was the son and successor of Meli-Shipak II, from whom he had previously received lands, as recorded on a kudurru, and he reigned for 13 years. His reign is contemporary with the Late Bronze Age collapse. He is sometime referred to as Merodach-Baladan I.

The Land grant to Munnabittu kudurru is an elongated egg-shaped black limestone ancient Mesopotamian narû or entitlement stele (kudurru), 46.5 cm high and 20.5 cm wide, which details the reconfirmation of a gift of 30 GUR of land by Kassite king Marduk-apla-iddina I to his servant Munnabittu, son of Ṭābu-melû. It is significant because, in addition to portraying eighteen divine icons around its top, it lists forty-seven gods in its inscription, more than any other similar object.