Thailand Domestic telephone access codes. Country Code: 66
| Amnatcharoen | 045 | Phayao | 054 |
| Anthong | 035 | Petchaboon | 056 |
| Ayuddhya | 035 | Phattalung | 074 |
| Bangkok | 02 | Phichit | 056 |
| Buriram | 044 | Phitsanulok | 055 |
| Chachoengsao | 038 | Phrae | 054 |
| Chiang Mai | 053 | Phuket | 076 |
| Chiang Rai | 053 | Prachinburi | 037 |
| Chonburi | 038 | Prachuab Khirikhan | 032 |
| Chainat | 056 | Ranong | 077 |
| Chomphon | 077 | Ratchaburi | 032 |
| Kalasin | 043 | Rayong | 038 |
| Kanchanaburi | 034 | Roiet | 043 |
| Khampaengphet | 055 | Sakaeo | 037 |
| Khon Kaen | 043 | Sakhon Nakorn | 042 |
| Krabi | 075 | Samutprakarn | 02 |
| Lampang | 054 | Samutsakhon | 034 |
| Lamphun | 053 | Samutsongkram | 034 |
| Loei | 042 | Saraburi | 036 |
| Lopburi | 036 | Satun | 074 |
| Maehongsong | 053 | Singburi | 036 |
| Mahasarakham | 043 | Sisaket | 045 |
| Mobile Phones | 01 | Songkhla | 074 |
| Mukdahan | 042 | Sukhothai | 055 |
| Nakorn Nayok | 037 | Suphanburi | 035 |
| Nakorn Pathom | 034 | Surat Thani | 077 |
| Nakorn Rachasima | 044 | Surin | 044 |
| Nakorn Sawan | 056 | Tak | 055 |
| Nakorn Sithammarat | 075 | Trad | 039 |
| Nan | 054 | Trang | 075 |
| Narathiwat | 073 | Ubonratchathani | 045 |
| Nongbualumphu | 042 | Udonthani | 042 |
| Nonthaburi | 02 | Uthaithani | 056 |
| Pathum Thani | 02 | Uttradit | 055 |
| Pattani | 073 | Yala | 073 |
| Phangna | 076 | Yasothorn | 045 |
