- Language: Karko (Sudan)
- Alternate names: Garko, Kithonirishe, Nubian (Hill), Ajang
- Language code: kko
- Language family: Nilo-Saharan, Eastern Sudanic, Eastern, Nubian, Central, Hill, Unclassified (SIL classification)
- Number of speakers: <8,000
- Vulnerability: Endangered
- Script: Latin script.
Ethnic autonym: Kaak. The Ama (See: [[Ama]]) call them Karme.
Karko and Wali [wll] speakers often identify themselves as speaking the same language, called Ajang... the term 'Ajang' is used among several Nuba Mountain languages of the Nubian group to refer to their common identity. (Krell 2012)