The 2009 Formula Nippon Championship was the thirty-seventh season of the premier Japanese open-wheel motor racing series. The series for Formula Nippon racing cars was contested over eight rounds. Nakajima Racing's Loïc Duval claimed four victories en route to the championship, ending a six-year streak of championships by the Impul team.
| Team | Driver | Engine | ||
|---|---|---|---|---|
| Lawson Team Impul | 1 |  Tsugio Matsuda | Toyota RV8K | |
| 2 |  Benoît Tréluyer | |||
| Team LeMans | 7 | Keisuke Kunimoto | Toyota RV8K | |
| 8 | Hiroaki Ishiura | |||
| HFPD Racing | 10 | Koudai Tsukakoshi | Honda HR09E | |
| ahead Team Impul | 20 | Kohei Hirate | Toyota RV8K | |
| Nakajima Racing | 31 | Loïc Duval | Honda HR09E | |
| 32 | Takashi Kogure | |||
| Petronas Team TOM'S | 36 |  André Lotterer | Toyota RV8K | |
| 37 | Kazuya Oshima | |||
| DoCoMo Team Dandelion Racing | 40 |  Richard Lyons | Honda HR09E | |
| 41 | Takuya Izawa | |||
| Cerumo/Inging | 48 | Yuji Tachikawa | Toyota RV8K |
| Round | Circuit | Date | Pole Position | Fastest Lap | Winning Driver | Winning Team | |
|---|---|---|---|---|---|---|---|
| 1 | Fuji Speedway | 5 April | Lawson Team Impul | ||||
| 2 | Suzuka Circuit | 17 May | Loïc Duval | Loïc Duval | Nakajima Racing | ||
| 3 | Twin Ring Motegi | 31 May | Takashi Kogure | Koudai Tsukakoshi | Takashi Kogure | Nakajima Racing | |
| 4 | Fuji Speedway | 28 June | Loïc Duval | Loïc Duval | Loïc Duval | Nakajima Racing | |
| 5 | Suzuka Circuit | 12 July | Loïc Duval | Takashi Kogure | Loïc Duval | Nakajima Racing | |
| 6 | Twin Ring Motegi | 9 August | Takashi Kogure | Takashi Kogure | Petronas Team TOM'S | ||
| 7 | Autopolis | 30 August | Takashi Kogure | Keisuke Kunimoto | Nakajima Racing | ||
| 8 | Sportsland SUGO | 27 September | Loïc Duval | Loïc Duval | Loïc Duval | Nakajima Racing |
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | Pole |
|---|---|---|---|---|---|---|---|---|---|
| Points | 10 | 8 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |
| Bold – Pole Italics – Fastest Lap |
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th |
|---|---|---|---|---|---|---|---|---|
| Points | 10 | 8 | 6 | 5 | 4 | 3 | 2 | 1 |
| Pos | Team | Car | FUJ | SUZ | MOT | FUJ | SUZ | MOT | AUT | SUG | Pts | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Nakajima Racing | 31 | 4 | 1 | Ret | 1 | 1 | 2 | 3 | 1 | 93 | |
| 32 | 8 | Ret | 1 | 7 | 2 | 6 | 1 | 10 | ||||
| 2 | Petronas Team TOM'S | 36 | 10 | 3 | 5 | 8 | 7 | 1 | 2 | 2 | 52 | |
| 37 | 7 | Ret | Ret | 2 | 10 | 11 | 9 | 6 | ||||
| 3 | Lawson Team Impul | 1 | Ret | Ret | 6 | Ret | 12 | 5 | 7 | 7 | 50 | |
| 2 | 1 | 2 | 2 | Ret | 3 | 3 | 8 | 9 | ||||
| 4 | ahead Team Impul | 20 | 3 | 4 | Ret | 5 | 5 | 8 | 4 | 3 | 31 | |
| 5 | Team LeMans | 7 | 9 | 9 | Ret | 10 | 11 | Ret | 11 | 8 | 31 | |
| 8 | 11 | 8 | 3 | 4 | 4 | 4 | 5 | 5 | ||||
| 6 | Dandelion Racing | 40 | Ret | 6 | 7 | 3 | 13 | Ret | 10 | 13 | 25 | |
| 41 | 2 | 7 | Ret | Ret | 8 | 9 | 6 | 11 | ||||
| 7 | HFDP Racing | 10 | 6 | 5 | 4 | 6 | 9 | 10 | Ret | 4 | 20 | |
| 8 | Cerumo/Inging | 48 | 5 | Ret | Ret | 9 | 6 | 7 | Ret | 12 | 9 |