| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Amphoe Rahaeng | city | Pathum Thani | Thailand | 14.04 | 100.40 | 6 | 22398 |
| Amphoe Rako | city | Pattani | Thailand | 6.72 | 101.41 | 154 | 30254 |
| Amphoe Raman | city | Yala | Thailand | 6.48 | 101.42 | 229 | 18172 |
| Amphoe Rangae | city | Narathiwat | Thailand | 6.30 | 101.73 | 78 | 25232 |
| Amphoe Ranot | city | Songkhla | Thailand | 7.78 | 100.32 | 16 | 30982 |
| Amphoe Rasi Saila | city | Sisaket | Thailand | 15.34 | 104.15 | 830 | 19592 |
| Amphoe Rasi Salai | city | Sisaket | Thailand | 15.34 | 104.15 | 830 | 19592 |
| Amphoe Rat Burana | city | Krung Thep Maha Nakhon | Thailand | 13.68 | 100.51 | 6 | 1212168 |
| Amphoe Ratchakhram | city | Phra Nakhon Si Ayutthaya | Thailand | 14.21 | 100.50 | 49 | 16804 |
| Amphoe Ratchasan | city | Chachoengsao | Thailand | 13.78 | 101.28 | 9 | 14056 |
| Amphoe Ratsada | city | Trang | Thailand | 7.97 | 99.63 | 68 | 16196 |
| Amphoe Rattanaburi | city | Surin | Thailand | 15.32 | 103.85 | 406 | 21009 |
| Amphoe Rattanawapi | city | Nong Khai | Thailand | 18.21 | 103.18 | 830 | 14221 |
| Amphoe Rattaphum | city | Songkhla | Thailand | 7.13 | 100.26 | 206 | 12516 |
| Amphoe Renu Nakhon | city | Nakhon Phanom | Thailand | 16.94 | 104.71 | 830 | 26583 |
| Amphoe Renu Nakhon | city | Nakhon Phanom | Thailand | 17.05 | 104.68 | 830 | 24493 |
| Amphoe Ron Phibun | city | Nakhon Si Thammarat | Thailand | 8.18 | 99.85 | 19 | 36079 |
| Amphoe Rong Kham | city | Kalasin | Thailand | 16.27 | 103.75 | 830 | 21167 |
| Amphoe Rong Kwang | city | Phrae | Thailand | 18.34 | 100.32 | 830 | 8940 |
| Amphoe Rop Krung | city | Phra Nakhon Si Ayutthaya | Thailand | 14.35 | 100.58 | 45 | 142132 |
| Amphoe Rueso | city | Narathiwat | Thailand | 6.39 | 101.52 | 200 | 17459 |
| Amphoe Ruso | city | Narathiwat | Thailand | 6.39 | 101.52 | 200 | 17459 |