Languages written with Thai script
| Language | Writing System Code | Writing System Status | SLDR/CLDR locale | Regional variants |
|---|---|---|---|---|
| Aheu | thm-Thai | unwritten | thm-Thai-TH (Thailand) | |
| Akha | ahk-Thai | in use | ahk-Thai-TH (Thailand) | |
| Bisu | bzi-Thai | in use | bzi (SLDR)  | bzi-Thai-TH (Thailand) |
| Blang | blr-Thai | in use | blr-Thai-TH (Thailand) | |
| Bru, Eastern | bru-Thai | in use | bru-Thai-LA (Laos) | |
| Bru, Western | brv-Thai | in use | brv-Thai-TH-x-sakonnkn (Thailand) | |
| Chong | cog-Thai | in use | cog-Thai-TH (Thailand) | |
| Hmong Daw | mww-Thai | in use | mww-Thai-TH (Thailand) | |
| Hmong Njua | hnj-Thai | in use | hnj-Thai-TH (Thailand) | |
| Iu Mien | ium-Thai | in use | ium-Thai-TH (Thailand) | |
| Karen, Phrae Pwo | kjt-Thai | in use | kjt-Thai-TH (Thailand) | |
| Karen, Pwo Northern | pww-Thai | in use | pww-Thai-TH (Thailand) | |
| Karen, Pwo West-Central Thailand | kjp-Thai | in use | kjp-Thai-TH (Thailand) | |
| Karen, S’gaw | ksw-Thai | in use | ksw-Thai-TH | |
| Katang, Northern | ncq-Thai | in use | ncq-Thai-LA (Laos) | |
| Kayah, Eastern | eky-Thai | in use | eky-Thai-TH | |
| Kensiu | kns-Thai | obsolete | kns-Thai-TH (Thailand) | |
| Khmer, Northern | kxm-Thai | in use | kxm-Thai-TH (Thailand) | |
| Khmu | kjg-Thai | in use | kjg-Thai-TH (Thailand) | |
| Khuen | khf-Thai | in use | khf-Thai-LA (Laos) | |
| Kuay | kdt-Thai | in use | kdt-Thai-TH (Thailand) | |
| Laomian | lwm-Thai | in use | lwm-Thai-CN (China) | |
| Lawa, Eastern | lwl-Thai | in use | lwl-Thai-TH (Thailand) | |
| Lawa, Western | lcp-Thai | in use | lcp (SLDR) | lcp-Thai-CN (China) |
| Mal | mlf-Thai | in use | mlf-Thai-LA (Laos) | |
| Malay, Pattani | mfa-Thai | in use | mfa-Thai-TH (Thailand) | |
| Mlabri | mra-Thai | in use | mra-Thai-TH (Thailand) | |
| Moken | mwt-Thai | in use | mwt-Thai-TH (Thailand) | |
| Moklen | mkm-Thai | in use | mkm-Thai-TH (Thailand) | |
| Mpi | mpz-Thai | in use | mpz-Thai-TH (Thailand) | |
| Nyahkur | cbn-Thai | in use | cbn-Thai-TH (Thailand) | |
| Nyaw | nyw-Thai | in use | nyw-Thai-TH (Thailand) | |
| Nyeu | nyl-Thai | unwritten | nyl-Thai-TH (Thailand) | |
| Palaung, Pale | pce-Thai | in use | pce_Thai (SLDR) | pce-Thai-TH (Thailand) |
| Pali | pi-Thai | in use | pi-Thai-IN (India) | |
| Phu Thai | pht-Thai | in use | pht-Thai-TH (Thailand) | |
| Phuan | phu-Thai | unwritten | phu-Thai-TH (Thailand) | |
| Prai | prt-Thai | in use | prt-Thai-TH (Thailand) | |
| Saek | skb-Thai | unwritten | skb-Thai-TH (Thailand) | |
| Shan | shn-Thai | in use | shn-Thai-TH (Thailand) | |
| So | sss-Thai | in use | sss-Thai-TH (Thailand) | |
| Thai | th-Thai | in use | th (CLDR) | th-Thai-TH (Thailand) |
| Thai Song | soa-Thai | in use | soa-Thai-TH (Thailand) | |
| Thai, Northeastern | tts-Thai | in use | tts-Thai-TH (Thailand) | |
| Thai, Northern | nod-Thai | in use | nod_Thai (SLDR) | nod-Thai-TH (Thailand) |
| Thai, Southern | sou-Thai | in use | sou-Thai-TH (Thailand) | |
| Ugong | ugo-Thai | unwritten | ugo-Thai-TH (Thailand) | |
| Urak Lawoi’ | urk-Thai | in use | urk-Thai-TH (Thailand) | |
| Yoy | yoy-Thai | in use | yoy-Thai-TH (Thailand) |