Kalendaryo ng Karera Chang International Circuit 2021
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 23 April - 25 April | TSS - Thailand Super Series Natapos | Event 1 | |
| 14 May - 16 May | TSS - Thailand Super Series Natapos | Event 2 | |
| 2 July - 4 July | Lamborghini Super Trofeo Asia Natapos | Round 2 | |
| 10 September - 12 September | Super Turbo Thailand Natapos | Round 5 & 6 | |
| 8 October - 10 October | Toyota Vios Series Lady Cup Natapos | Round 1 | |
| 29 October - 31 October | TSS - Thailand Super Series Natapos | Event 4 | |
| 17 December - 18 December | Toyota Vios Series Lady Cup Natapos | Round 4 |