The 2001 Formula Nippon Championship was the twenty-ninth season of premier Japanese single-seater racing, and the sixth under the Formula Nippon moniker. It was contested over ten rounds at five venues. 11 different teams, 23 different drivers, and two different chassis suppliers competed in the series. This would be the last season with multiple chassis suppliers after G-Force Technologies stopped supplying chassis after 2001.
Satoshi Motoyama of Team Impul won his second series championship.
All teams used tyres supplied by Bridgestone and Mugen MF308 engines.
| Team | # | Driver | Chassis | Rounds |
|---|---|---|---|---|
| PIAA Nakajima Racing | 1 | | Reynard 2KL | All |
| 2 | | Reynard 99L | All | |
| Olympic Kondo Racing Team | 3 | | Reynard 99L | All |
| 4 | | All | ||
| Team 5ZIGEN | 5 | | Reynard 99L | All |
| 6 | | Reynard 99L Reynard 01L | All | |
| Team LeMans | 7 | | Reynard 99L | 1–6 |
| | 7–10 | |||
| 8 | | All | ||
| Team Morinaga Nova | 9 | | G-Force GF03C | All |
| 10 | | G-Force GF03C Reynard 99L | All | |
| Cosmo Oil Racing Team Cerumo | 11 | | Reynard 99L | All |
| 12 | | All | ||
| Mooncraft | 14 | | Reynard 01L | 2–10 |
| excite Team Impul | 19 | | Reynard 01L | All |
| 20 | | Reynard 99L | All | |
| Takagi B-1 Car Club | 36 | | Reynard 2KL Reynard 99L | All |
| 37 | | Reynard 99L | All | |
| Autobacs Racing Team Aguri | 55 | | Reynard 99L | All |
| 56 | | All | ||
| DoCoMo Team Dandelion Racing | 68 | | Reynard 2KL | All |
| 69 | | Reynard 99L | 1–4 | |
| | 5 |
All races were held in Japan.
| Race | Track | Date | Pole position | Fastest race lap | Winning driver | Winning team |
|---|---|---|---|---|---|---|
| 1 | Suzuka Circuit | 25 March | | | | Team 5ZIGEN |
| 2 | Twin Ring Motegi | 22 April | | | | Team 5ZIGEN |
| 3 | Mine Circuit | 20 May | | | | excite Team Impul |
| 4 | Fuji Speedway | 3 June | | | | Team 5ZIGEN |
| 5 | Suzuka-East Circuit | 1 July | | | | excite Team Impul |
| 6 | Sportsland SUGO | 29 July | | | | excite Team Impul |
| 7 | Fuji Speedway | 2 September | | | | Autobacs Racing Team Aguri |
| 8 | Mine Circuit | 23 September | | | | excite Team Impul |
| 9 | Twin Ring Motegi | 21 October | | | | PIAA Nakajima Racing |
| 10 | Suzuka Circuit | 18 November | | | | PIAA Nakajima Racing |
Note:
Juichi Wakisaka set the fastest lap in Round 8 but was later disqualified.
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|---|
| Points | 10 | 6 | 4 | 3 | 2 | 1 |
| Rank | Name | SUZ | MOT | MIN | FUJ | SUZ | SGO | FUJ | MIN | MOT | SUZ | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | Ret | 9 | 1 | Ret | 1 | 1 | 4 | 1 | 2 | Ret | 49 |
| 2 | | 1 | 1 | 5 | 1 | 8 | 7 | 12 | 6 | Ret | 10 | 33 |
| 3 | | 13 | 2 | 11 | Ret | 4 | 4 | 2 | 3 | 5 | 2 | 30 |
| 4 | | 5 | Ret | 2 | 6 | Ret | Ret | 7 | Ret | 1 | 1 | 29 |
| 5 | | 2 | 10 | 12 | Ret | 6 | 2 | 1 | DSQ | Ret | Ret | 23 |
| 6 | | Ret | 10 | 3 | 2 | 3 | Ret | Ret | 3 | 3 | 22 | |
| 7 | | Ret | 4 | 4 | 2 | Ret | 6 | 3 | Ret | 7 | 4 | 20 |
| 8 | | 10 | Ret | 3 | Ret | 3 | Ret | 14 | 2 | 6 | 5 | 17 |
| 9 | | 4 | 5 | 6 | 5 | Ret | 11 | 6 | 4 | 8 | 7 | 12 |
| 10 | | Ret | 3 | 8 | Ret | 5 | 5 | Ret | Ret | 9 | 9 | 8 |
| 11 | | Ret | Ret | Ret | 12 | Ret | Ret | 5 | Ret | 4 | 14 | 5 |
| 12 | | 3 | Ret | Ret | Ret | 9 | 10 | 8 | Ret | 12 | Ret | 4 |
| 13 | | 7 | 6 | Ret | 4 | Ret | 9 | 11 | Ret | 11 | 13 | 4 |
| 14 | | 10 | 5 | 10 | Ret | 2 | ||||||
| 15 | | 6 | 7 | 9 | Ret | Ret | Ret | 9 | Ret | Ret | 6 | 2 |
| 16 | | 11 | Ret | 7 | 7 | 10 | Ret | 0 | ||||
| 17 | | 9 | Ret | Ret | 11 | 7 | 8 | Ret | Ret | Ret | 8 | 0 |
| 18 | | 15 | Ret | 14 | 8 | Ret | 15 | 15 | 7 | 15 | Ret | 0 |
| 19 | | 8 | 8 | Ret | 9 | 11 | 12 | Ret | Ret | 13 | 12 | 0 |
| 20 | | 12 | Ret | Ret | 10 | DNS | 14 | 16 | Ret | Ret | Ret | 0 |
| 21 | | Ret | Ret | Ret | 13 | 12 | Ret | 13 | Ret | Ret | 11 | 0 |
| 22 | | 14 | Ret | 13 | DNS | 0 | ||||||
| 23 | | 13 | 0 |
| Rank | Team | Car | SUZ | MOT | MIN | FUJ | SUZ | SGO | FUJ | MIN | MOT | SUZ | Points |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 5ZIGEN | 5 | 1 | 1 | 5 | 1 | 8 | 7 | 12 | 6 | Ret | 10 | 53 |
| 6 | Ret | 4 | 4 | 2 | Ret | 6 | 3 | Ret | 7 | 4 | |||
| 2 | excite Impul | 19 | Ret | 9 | 1 | Ret | 1 | 1 | 4 | 1 | 2 | Ret | 51 |
| 20 | 6 | 7 | 9 | Ret | Ret | Ret | 9 | Ret | Ret | 6 | |||
| 3 | ARTA | 55 | 2 | 10 | 12 | Ret | 6 | 2 | 1 | DSQ | Ret | Ret | 40 |
| 56 | 10 | Ret | 3 | Ret | 3 | Ret | 14 | 2 | 6 | 5 | |||
| 4 | PIAA Nakajima | 1 | Ret | 3 | 8 | Ret | 5 | 5 | Ret | Ret | 9 | 9 | 37 |
| 2 | 5 | Ret | 2 | 6 | Ret | Ret | 7 | Ret | 1 | 1 | |||
| 5 | Olympic Kondo | 3 | 13 | 2 | 11 | Ret | 4 | 4 | 2 | 3 | 5 | 2 | 34 |
| 4 | 7 | 6 | Ret | 4 | Ret | 9 | 11 | Ret | 11 | 13 | |||
| 6 | Mooncraft | 14 | Ret | 10 | 3 | 2 | 3 | Ret | Ret | 3 | 3 | 22 | |
| 7 | Cosmo Oil Cerumo | 11 | 4 | 5 | 6 | 5 | Ret | 11 | 6 | 4 | 8 | 7 | 16 |
| 12 | 3 | Ret | Ret | Ret | 9 | 10 | 8 | Ret | 12 | Ret | |||
| 8 | Team Morinaga Nova | 9 | 8 | 8 | Ret | 9 | 11 | 12 | Ret | Ret | 13 | 12 | 5 |
| 10 | Ret | Ret | Ret | 12 | Ret | Ret | 5 | Ret | 4 | 14 | |||
| 9 | LeMans | 7 | 11 | Ret | 7 | 7 | 10 | Ret | 10 | 5 | 10 | Ret | 2 |
| 8 | 9 | Ret | Ret | 11 | 7 | 8 | Ret | Ret | Ret | 8 | |||
| 10 | Takagi B-1 Racing | 36 | 15 | Ret | 14 | 8 | Ret | 15 | 15 | 7 | 15 | Ret | 0 |
| 37 | 12 | Ret | Ret | 10 | DNS | 14 | 16 | Ret | Ret | Ret | |||
| 11 | DoCoMo Dandelion | 68 | Ret | Ret | Ret | 13 | 12 | Ret | 13 | Ret | Ret | 11 | 0 |
| 69 | 14 | Ret | 13 | DNS | 13 |