| name | Ethnologue status | language family | office | IETF | alphabet | ISO 6391 | ISO 6392 | ISO 6393 | speakers (people) | Manuscript | micronation | publisher | former country | is a dialect |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thai language | 1 National | Kra–Dai languages | Royal Society of Thailand | Thai script | th | tha | tha | 70,000,000 | Yes | |||||
| Thai Song language | 6b Threatened | Kra–Dai languages | Tai Viet script | soa | 32,000 | Yes | ||||||||
| Then language | 6b Threatened | Kra–Dai languages | tct | tct | 20,000 | Yes | ||||||||
| Tsʻün-Lao language | 6a Vigorous | Kra–Dai languages | tsl | 10,000 | Yes | |||||||||
| Yang Zhuang language | 6a Vigorous | Kra–Dai languages | zyg | zyg | 770,000 | Yes |