Ninazu in Sumerian mythology was a god of the underworld, and of healing. He was the son of Enlil and Ninlil or, in alternative traditions, of Ereshkigal and Gugalana, and was the father of Ningiszida. In the text Enki and Ninhursag he was described as the consort of Ninsutu, one of the deities born to relieve the illness of Enki.