Kadu languages

Kadu
Tumtum Kadugli–Krongo
Geographic distribution	Nuba Mountains, Sudan
Linguistic classification	Nilo-Saharan? Central Sudanic – Kadu ? Kadu
Subdivisions	Western Central Eastern
Glottolog	kadu1256

The Kadu languages, also known as Kadugli–Krongo or Tumtum, are a small language family, once included in Kordofanian but since Thilo Schadeberg (1981) widely seen as Nilo-Saharan. However, there is little evidence for either classification, and a conservative classification would treat the Kadu languages as an independent family.

There are three branches:

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