Okayama International Circuit 2021 Race Calendar
| Date | Racing Series | Round | Event Name |
|---|---|---|---|
| April 10 - April 11 | PCCJ - Porsche Carrera Cup Japan Finished | R01 & R02 | |
| June 13 - June 13 | Porsche Sprint Challenge Japan Finished | Round 5 & 6 | |
| June 26 - June 27 | Formula Regional Japanese Championship Finished | Round 1 | |
| October 3 - October 3 | Mini Challenge Japan Finished | Round 4 | |
| November 13 - November 14 | Super Taikyu Series Finished | Round 6 |