- Language: Tai Daeng
- Alternate names: Red Tai, Red Thai, Tai Rouge, Thai Do, Thai Dang, Tai Deng, Daeng, Táy-Môc-Châu, Môc-Châu
- Language code: tyr
- Language family: Tai-Kadai, Kam-Tai, Tai, Southwestern (SIL classification)
- Number of speakers: 80,000
- Vulnerability: Threatened
- Script: Tai Viet script.
Part of the Thái official ethnic community (1,550,423, 2009 census). Speakers in Viet Nam tend to identify with Tai Dam (See: [[Tai Dam]]) and deny they are Red Tai.
Tai Daeng is spoken in Vietnam, Laos, Southeast Asia.