1998 Formula Nippon Championship
The 1998 Formula Nippon Championship was the twenty-sixth season of premier Japanese single-seater racing, and the third under the Formula Nippon name and Japan Race Promotion (JRP) management. The series was scheduled to take place over ten rounds, though one round at Fuji Speedway was cancelled due to weather, leaving only nine rounds at five venues. Team LeMans driver Satoshi Motoyama won his first career championship.
14 different teams, 29 different drivers, and three different chassis series. It was the first season in which Mugen supplied engines to all teams, though open tuning was still permitted. As was the case in 1997, each round saw a Special Stage after the original qualifying. The best six qualifiers had to compete in a separate session for the pole.