Mutakkil-Nusku was King of Assyria briefly in 1133 BC. The son of
Ashur-dan I, Mutakkil-Nusku usurped the throne from his brother,
Ninurta-tukulti-Ashur, apparently only shortly after their father's death. Mutakkil-Nusku died soon after this act of usurpation, leaving the throne to his son,
Ashur-resh-ishi I.