1991 Japanese motorcycle Grand Prix

  1991 Japanese Grand Prix
Race details
Race 1 of 15 races in the
1991 Grand Prix motorcycle racing season
Date24 March 1991
Official nameKibun Japanese Grand Prix
LocationSuzuka Circuit
Course
  • Permanent racing facility
  • 5.859 km (3.641 mi)
500cc
Pole position
Rider Kevin Schwantz Suzuki
Time 2:11.948
Fastest lap
Rider John Kocinski Yamaha
Time 2:11.149
Podium
First Kevin Schwantz Suzuki
Second Michael Doohan Honda
Third Wayne Rainey Yamaha
250cc
Pole position
Rider Wilco Zeelenberg Honda
Time 2:16.011
Fastest lap
Rider Luca Cadalora Honda
Time 2:15.075
Podium
First Luca Cadalora Honda
Second Carlos Cardús Honda
Third Wilco Zeelenberg Honda
125cc
Pole position
Rider Noboru Ueda Honda
Time 2:24.623
Fastest lap
Rider Noboru Ueda Honda
Time 2:22.264
Podium
First Noboru Ueda Honda
Second Fausto Gresini Honda
Third Loris Capirossi Honda

The 1991 Japanese motorcycle Grand Prix was the first round of the 1991 Grand Prix motorcycle racing season. It took place on the weekend of 22–24 March 1991 at the Suzuka Circuit.

Noboru Ueda, who won the 125cc race on his Grand Prix motorcycle racing debut, would become the last rider to win on his debut until Can Öncü in 2018.