- Language: Tsat
- Alternate names: Utsat, Utset, Huihui, Hui, Hainan Cham, 回輝話, 占語
- Language code: huq
- Language family: Austronesian, Malayo-Polynesian, Malayo-Sumbawan, North and East Malayo-Sumbawan, Aceh-Chamic, Chamic, Highlands Chamic, Chru-Northern Cham, Northern Cham
- Number of speakers: <4,000
- Vulnerability: Threatened
Officially classified within Hui nationality. The phonology suggests a history of some independence from other Chamic languages (Maddieson 1991). Their name for themselves is Utsat, for their language Tsat. Huihui or Hui is the Chinese name. Muslim.
Tsat is spoken in China, East Asia.