Baa, also known as Kwa, Kwah, is a Niger–Congo language of uncertain affiliation; the more it has been studied, the more divergent it appears. Joseph Greenberg counted it as one of the Waja–Jen languages of the Adamawa family. Boyd (1989) assigned it its own branch within Waja–Jen. Kleinewillinghöfer (1996) removed it from Waja–Jen as an independent branch of Adamawa. When Blench (2008) broke up Adamawa, Baa became a provisional independent branch of his larger Savannas family.