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 | | Toyota RV8K |
| 2 | | ||
| Team LeMans | 7 | | Toyota RV8K |
| 8 | | ||
| HFPD Racing | 10 | | Honda HR09E |
| ahead Team Impul | 20 | | Toyota RV8K |
| Nakajima Racing | 31 | | Honda HR09E |
| 32 | | ||
| Petronas Team TOM'S | 36 | | Toyota RV8K |
| 37 | | ||
| DoCoMo Team Dandelion Racing | 40 | | Honda HR09E |
| 41 | | ||
| Cerumo/Inging | 48 | | 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 | | | | Nakajima Racing |
| 3 | Twin Ring Motegi | 31 May | | | | Nakajima Racing |
| 4 | Fuji Speedway | 28 June | | | | Nakajima Racing |
| 5 | Suzuka Circuit | 12 July | | | | Nakajima Racing |
| 6 | Twin Ring Motegi | 9 August | | | | Petronas Team TOM'S |
| 7 | Autopolis | 30 August | | | | Nakajima Racing |
| 8 | Sportsland SUGO | 27 September | | | | Nakajima Racing |
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | Pole |
|---|---|---|---|---|---|---|---|---|---|
| Points | 10 | 8 | 6 | 5 | 4 | 3 | 2 | 1 | 1 |
|
Bold – Pole |
| 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 |