Lower Nossob is an extinct Khoisan language once spoken along the Nossob River on the border of South Africa and Botswana, near Namibia.

There are two attested dialects: ǀʼAuni (pronounced /ˈaʊniː/ OW-nee), or ǀʼAuo, recorded by Dorothea Bleek, and ǀHaasi, recorded by Robert Story.

ǀʼAuni is the word they formerly used for themselves; ǀʼAuo (or ǀʼAu) is what they called their language.

ǀauni, ǁauni, Auni are misspellings.

[3] Güldemann (2017) lists the following doculects as being Lower Nossob.