Round 2 of the 2015 Japanese Super Formula Championship was held at the Okayama International Circuit in Japan on 24 May 2015. Hiroaki Ishiura was the race winner.
Race Result
| Pos. | No. | Driver | Abbreviation | Nationality | Team | Engine | Tyre | Laps | Race Time | Gap | Best Time |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 38 | Hiroaki Ishiura | ISH | Japan | P.MU/CERUMO · INGING | TOYOTA RI4A | Bridgestone | 68 | 1:29:49.130 | 168.208 km/h | 1:17.043 |
| 2 | 8 | Kamui Kobayashi | KOB | Japan | Team KYGNUS SUNOCO | TOYOTA RI4A | Bridgestone | 68 | 1:29:50.238 | 1.108 | 1:17.524 |
| 3 | 40 | Tomoki Nojiri | NOJ | Japan | DOCOMO DANDELION M40S | HONDA HR-414E | Bridgestone | 68 | 1:30:04.736 | 15.606 | 1:17.635 |
| 4 | 16 | Naoki Yamamoto | YAM | Japan | TEAM MUGEN | HONDA HR-414E | Bridgestone | 68 | 1:30:07.179 | 18.049 | 1:17.694 |
| 5 | 19 | J.P.L.de Oliveira | OLI | Brazil | LENOVO TEAM IMPUL | TOYOTA RI4A | Bridgestone | 68 | 1:30:10.771 | 21.641 | 1:17.210 |
| 6 | 20 | Andrea Caldarelli | CAL | Italy | LENOVO TEAM IMPUL | TOYOTA RI4A | Bridgestone | 68 | 1:30:27.439 | 38.309 | 1:18.292 |
| 7 | 11 | Takuya Izawa | IZA | Japan | REAL | HONDA HR-414E | Bridgestone | 68 | 1:30:29.626 | 40.496 | 1:17.957 |
| 8 | 2 | Andre Lotterer | LOT | Germany | PETRONAS TOM’S | TOYOTA RI4A | Bridgestone | 68 | 1:30:30.468 | 41.338 | 1:18.038 |
| 9 | 7 | Ryo Hirakawa | HIR | Japan | ACHIEVEMENT Team KYGNUS SUNOCO | TOYOTA RI4A | Bridgestone | 68 | 1:30:30.754 | 41.624 | 1:18.008 |
| 10 | 41 | Narain Karthikeyan | KAR | India | DOCOMO DANDELION M41Y | HONDA HR-414E | Bridgestone | 68 | 1:30:32.827 | 43.697 | 1:18.085 |
| 11 | 65 | Bertrand Baguette | BAG | Belgium | NAKAJIMA RACING | HONDA HR-414E | Bridgestone | 68 | 1:30:33.435 | 44.305 | 1:18.254 |
| 12 | 64 | Daisuke Nakajima | DAI | Japan | NAKAJIMA RACING | HONDA HR-414E | Bridgestone | 68 | 1:30:44.485 | 55.355 | 1:18.241 |
| 13 | 4 | William Buller | BUL | Great Britain | FUJI×D'station KONDO | TOYOTA RI4A | Bridgestone | 68 | 1:30:47.848 | 58.718 | 1:18.283 |
| 14 | 10 | Koudai Tsukakoshi | TSU | Japan | REAL | HONDA HR-414E | Bridgestone | 68 | 1:30:55.111 | 1:05.981 | 1:18.197 |
| 15 | 1 | Kazuya Oshima | OSH | Japan | PETRONAS TOM’S | TOYOTA RI4A | Bridgestone | 67 | 1:29:53.395 | 1 lap | 1:18.494 |
| DNF | 34 | Takashi Kogure | KOG | Japan | DRAGO CORSE | HONDA HR-414E | Bridgestone | 37 | 50:08.623 | 31 laps | 1:17.959 |
| DNF | 3 | James Rossiter | ROS | Great Britain | FUJI×D'station KONDO | TOYOTA RI4A | Bridgestone | 17 | 22:21.259 | 51 laps | 1:17.850 |
| DNF | 18 | Yuichi Nakayama | NAK | Japan | KCMG Elyse | TOYOTA RI4A | Bridgestone | 0 | 68 laps | ||
| DNF | 39 | Yuji Kunimoto | KUN | Japan | P.MU/CERUMO · INGING | TOYOTA RI4A | Bridgestone | 0 | 68 laps |