The Sumba–Hawu languages are a group of closely related Austronesian languages, spoken in East Nusa Tenggara, Indonesia. The most widely spoken Sumba–Hawu language is Kambera, with a quarter million speakers on the eastern half of Sumba Island. The Hawu language of Savu Island is suspected of having a non-Austronesian substratum, but perhaps not to a greater extent that other languages of central and eastern Flores, such as Sika, or indeed of Central Malayo-Polynesian in general.