1991 Grand Prix motorcycle racing season
- 3.1 Race Results
- 3.2 Drivers' Championship
- 3.3 Constructors' Championship
- 4.1 Race Results
- 4.2 Drivers' Championship
- 4.3 Constructors' Championship
- 5.1 Race Results
- 5.2 Drivers' Championship
The motorcycle world championship 1991 season was the 43rd in the history of FIM motorcycle road racing World Championship.
In the classes to 500 cc and 250 cc, 15, fought twelve races in the class up to 125 cc and 13 in the sidecars.
Scoring
The two worst results achieved did not come in the standings.
500 cc class
Race Results
Drivers' championship
( Points in brackets including void results )
Constructors' Championship
250 cc class
Race Results
Drivers' championship
( Points in brackets including void results )
Constructors' Championship
125 cc class
Race Results
Drivers' championship
( Points in brackets including void results )