| Code | Name | Region |
|---|---|---|
| THTRT | Trat | 23 |
| THTDX | Trat Apt | 23 |
| THTPP | Tungprong Pt | 20 |
| THUBP | Ubon Ratchathani Apt | 34 |
| THUTH | Udon Thani Apt | 41 |
| THUCT | Unithai Container Terminal | 11 |
| THUTP | U-tapao Rayong Pattaya International Apt | 21 |
| THWPJ | Wang Prachan Customs House | 91 |
| THYAL | Yala | |
| THYAN | Yan Nawa | 10 |
| THYNT | Yasothon | 35 |
| THTHS | Sukhothai Apt | 64 |
| THSKL | Su-ngai Kolok Customs House | 96 |
| THSUB | Suphan Buri | 72 |
| THURT | Surat Thani | 84 |
| THSNR | Surin | 32 |
| THSIA | Suvarnabhumi International Apt | 11 |
| THI6C | T S Transport And Logistics | 11 |
| THTKT | Tak Apt | 63 |
| THTAB | Tak Bai Customs House | 96 |
| THTKH | Takhli Apt | 60 |
| THTTE | Tantawan Terminal | |
| THTAC | Tha Chaleap | 22 |
| THTHL | Tha Li Customs House | 42 |
| THTHA | Tha Sala | 80 |
| THTPT | Thai Prosperity Terminal | |
| THTCH | Thung Chang Customs House | 55 |
| THTSG | Thung Song | 80 |
| THCCP | Tips Container Terminal | 10 |
| THTRG | Trang | 92 |
| THTST | Trang Apt | 92 |
| THSAM | Samphanthawong | |
| THUSM | Samui Apt | 84 |
| THSAS | Samulsakom | 10 |
| THSAP | Samut Prakan | 11 |
| THSAU | Samut Sakhon, Changwat | 74 |
| THSSM | Samut Songkhram | 75 |
| THSPK | Samuthprakarn | 11 |
| THSBR | Sangkhla Buri Customs House | 71 |
| THSBI | Sara Buri | |
| THSAT | Sattahip | 20 |
| THSNT | Satun | 91 |
| THSRI | Si Racha | 20 |
| THSBP | Siam Bangkok Port | |
| THSCT | Siam Container Terminal | 11 |
| THSSW | Siamgas And Petrochemicals | 11 |
| THSIC | Sichon | 80 |
| THSIB | Sing Buri | 17 |
| THSSK | Sisaket | 33 |
| THSGK | Songkhla | 90 |