Bayot is a Niger-Congo, West-Atlantic, Bak language of the Joola sub-group. This language is spoken in a Senegalese South-West zone that covers the prefecture of Nyassia, and mainly comprises three dialects: Ehin, Kugere, and Njambalaan. Nevertheless, according to my informants, speech differs from one village to another. The collection includes audiovisual documentation of the language and its oral narratives. It also includes data that lead to the doctoral dissertation on a phonological, morphological and morpho-syntactical description of the Bayot language, a multilingual dictionary of 5000 items and a spelling book for adult literacy.