- Source: 1991 San Marino motorcycle Grand Prix
- Grand Prix Sepeda Motor San Marino
- Michael Schumacher
- Grand Prix Sepeda Motor musim 1992
- Marco Simoncelli
- Daftar pemenang Grand Prix Sepeda Motor
- Jorge Lorenzo
- Romano Fenati
- Casey Stoner
- Nicky Hayden
- San Marino Grand Prix
- 1991 San Marino motorcycle Grand Prix
- San Marino and Rimini Riviera motorcycle Grand Prix
- 1991 Grand Prix motorcycle racing season
- 1993 San Marino motorcycle Grand Prix
- 1992 Grand Prix motorcycle racing season
- 1987 San Marino motorcycle Grand Prix
- 1991 British motorcycle Grand Prix
- List of Grand Prix motorcycle races
- 1991 Czechoslovak motorcycle Grand Prix
The 1991 San Marino motorcycle Grand Prix was the twelfth round of the 1991 Grand Prix motorcycle racing season. It took place on the weekend of 16–18 August 1991 at the Mugello Circuit.
500 cc race report
5th pole of the season for Kevin Schwantz. Wayne Rainey gets the start from Wayne Gardner, Schwantz and Mick Doohan.
Rainey and Doohan get away, Doohan superior on the brakes at the end of the straight. Schwantz is a close 3rd.
Rainey drops Doohan, who is caught by Schwantz.