Debutants
Chien-Liang Chen is the youngest debutant in Tour of Thailand in 2012. There are 21 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | CHEN Chien-Liang | Action Cycling Team | 18y + 146d |
| 2 | JEONG Tae-yang | Seoul Cycling Team | 18y + 181d |
| 3 | YANG Wu Hsin | Action Cycling Team | 18y + 326d |
| 4 | LEE Seung Kwon | Seoul Cycling Team | 18y + 345d |
| 5 | PRILANJI Fito | CCN Cycling Team | 19y + 362d |
| 6 | MAZUKI Nur Amirul Fakhruddin | Terengganu Cycling Team | 20y + 68d |
| 7 | GORBACHEV Gleb | Uzbekistan Suren Team | 20y + 362d |
| 8 | GOH Choon Huat | OCBC Singapore Continental Cycling Team | 21y + 109d |
| 9 | HANSEN Jesper | Glud & Marstrand - LRØ | 21y + 161d |
| 10 | MAT SENAN Mohammad Saufi | Terengganu Cycling Team | 21y + 174d |
| 11 | IRIBE Shotaro | Shimano Racing Team | 22y + 244d |
| 12 | NONAKA Ryoma | Shimano Racing Team | 22y + 254d |
| 13 | KIMORI Nozomu | Aisan Racing Team | 23y + 60d |
| 14 | JANG Chan Jae | Terengganu Cycling Team | 23y + 86d |
| 15 | FENG Chun Kai | Action Cycling Team | 23y + 151d |
| 16 | CHIEH LIU Wei | Action Cycling Team | 23y + 312d |
| 17 | ABD AZIZ Muhammad Raihaan | CCN Cycling Team | 23y + 356d |
| 18 | NAKAJIMA Yasuharu | Aisan Racing Team | 27y + 96d |
| 19 | VOLIK Konstantin | China 361° Cycling Team | 27y + 319d |
| 20 | KHALMURATOV Muradjan | Uzbekistan Suren Team | 29y + 295d |
| 21 | GITELIS Rob | CCN Cycling Team | 44y + 161d |