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.

All races were held in Japan.

Note:

Juichi Wakisaka set the fastest lap in Round 8 but was later disqualified.