- Language: Tetun
- Alternate names: TETUM, TETTUM, TETO, TETU, TETUNG, BELU, BELO, FEHAN, TETUN BELU
- Language code: tet
- Language family: Austronesian, Malayo-Polynesian, Central-Eastern, Central Malayo-Polynesian, Timor, Nuclear Timor, East
- Number of speakers: 450000
Wide variation in morphology and syntax among major dialects, and variation in social structure. Investigation needed: intelligibility with dialects. Grammar. Christian, traditional religion. Bible portions 1997.