Tournament Name: เทนนิสเพื่อความชนะเลิศแห่งประเทศไทย ครั้งที่ 81, Week Of: 13-December-2021
| S.No. | First Name | Family Name | Province |
| 1 | Rathasart | KAEWAMATAWONG | NMA |
| 2 | Sirawich | SUDNATE | ACR |
| 3 | Chayanon | KAEWSUTO | SRI |
| 4 | Permphoom | PANUWONG | NMA |
| 5 | Zitawe | KULPHISANRAT | BKK |
| 6 | Xubill | SAEKHOW | NBI |
| 7 | Akanit | PUMJIT | PBI |
| 8 | Apivich | ROJPIBOONPHAN | BKK |
| 9 | Korawin | DACHAPANYA | PKN |
| 10 | Numthap | PANYAPHU | BKK |
| 11 | Krittin | KOAYKUL | PNA |
| 12 | Phasawit | BURAPHARITTHA | BKK |
| 13 | Tjengkwok | CHO | BKK |
| 14 | Kitchai | NOIDAENG | PTE |
| 15 | Peerapat | DEDTHONGLANG | SPK |
| 16 | Supaset | SINCHAROENWATTANA | CPN |
| S.No. | First Name | Family Name | Province |
| 1 | Pannawat | SUTTISOMBOON | LPG |
| 2 | Teerapat | KHANTIWEERAWAT | KKN |
| S.No. | First Name | Family Name | Province |
| 1 | Praewa | JONGJIT | SKA |
| 2 | Achiraya | DECHAPANYA | PKN |