Nuska or Nusku, possibly also known as Našuḫ, was a Mesopotamian god best attested as the sukkal of Enlil. He was also associated with fire and light, and could be invoked as a protective deity against various demons, such as Lamashtu or gallu. His symbols included a staff, a lamp and a rooster. Various traditions existed regarding his genealogy, with some of them restricted to texts from specific cities. His wife was the goddess Sadarnunna, whose character is poorly known. He could be associated with the fire god Gibil, as well as with various courtiers of Enlil, such as Shuzianna and Ninimma.

Sukkal was a term which could denote both a type of official and a class of deities in ancient Mesopotamia. The historical sukkals were responsible for overseeing the execution of various commands of the kings and acted as diplomatic envoys and translators for foreign dignitaries. The deities referred to as sukkals fulfilled a similar role in mythology, acting as servants, advisors and envoys of the main gods of the Mesopotamian pantheon, such as Enlil or Inanna. The best known sukkal is the goddess Ninshubur. In art, they were depicted carrying staves, most likely understood as their attribute. They could function as intercessory deities, believed to mediate between worshipers and the major gods.