Ateker or ŋaTekerin is a common name for the closely related Jie, Karamojong, Turkana, Toposa, Nyangatom and Teso peoples and their languages. Itung'a and Teso have been used among ethnographers, while the term Teso-Turkana is sometimes used for the languages, which are of Eastern Nilotic stock. Ateker means 'clan' or 'tribe' in Teso language. In Lango language the word for clan is atekere.