Tetserret (Tin-Sert) is a Western Berber language spoken by the Ait-Awari and Kel Eghlal Tuareg tribes of the Akoubounou (Akabinu) commune in Niger.

[3] Popular understanding among some Ait-Awari derives the name tet-serret, and its Tamasheq equivalent šin-sart, from expressions meaning 'the (language) of Sirte'.

As late as 1981, Bernus treated Tetserret as a dialect of Tuareg,[5] and some early sources even confused it with the Northern Songhay languages.

Tetserret is the only surviving Berber language to share a number of sound shifts with Zenaga of Mauritania.

[10] The language holds a certain level of prestige in its community, as a tool of spreading religion, such as it is 'almost a sin not to speak it',[11] it is hard to evaluate the number of 'true' speakers, because there is a great shame in not speaking it within the community, leading to respondents exaggerating their knowledge of the language.