1998 Japanese motorcycle Grand Prix
The 1998 Japanese motorcycle Grand Prix was the first round of the 1998 Grand Prix motorcycle racing season. It took place on 5 April 1998 at the Suzuka Circuit. The rookie Max Biaggi surprised everyone by winning his first ever GP500 race.
500 cc classification
Source:250 cc classification
Source:125 cc classification
Source:Championship standings after the race (500cc)
Below are the standings for the top five riders and constructors after round one has concluded.;Riders' Championship standings
| Rider | Points | |
| 1 |  |