Kalendar Perlumbaan Litar Antarabangsa Okayama 2015
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 3 April - 5 April | PCCJ - Porsche Carrera Cup Jepun Selesai | R01 & R02 | 2015 Autobacs Super GT Round1 Okayama GT 300km Race |
| 4 April - 5 April | Kejuaraan Jepun F4 Selesai | R1/R2 | 2015 Autobacs Super GT Round1 Okayama GT 300km Race |
| 23 Mei - 24 Mei | Formula Super Selesai | Round 2 | |
| 5 September - 6 September | Siri Super Taikyu Selesai | Round 5 | |
| 10 Oktober - 11 Oktober | LSTA - Lamborghini Super Trofeo Asia Selesai | Round 5 |