Grands Prix
| Round | Race | Location | 50cc winner | 125cc winner | 250cc winner | 350cc winner | 500cc winner | Report |
|---|---|---|---|---|---|---|---|---|
| 1 | Nations Grand Prix | Misano | Eugenio Lazzarini | Pier Paolo Bianchi | Anton Mang | Johnny Cecotto | Kenny Roberts | Report |
| 2 | Spanish Grand Prix | Jarama | Eugenio Lazzarini | Pier Paolo Bianchi | Kork Ballington | Kenny Roberts | Report | |
| 3 | French Grand Prix | Paul Ricard | Angel Nieto | Kork Ballington | Jon Ekerold | Kenny Roberts | Report | |
| 4 | Yugoslavian Grand Prix | Rijeka | Ricardo Tormo | Guy Bertin | Anton Mang | Report | ||
| 5 | Dutch TT | Assen | Ricardo Tormo | Angel Nieto | Carlos Lavado | Jon Ekerold | Jack Middelburg | Report |
| 6 | Belgian Grand Prix | Zolder | Stefan Dörflinger | Angel Nieto | Anton Mang | Randy Mamola | Report | |
| 7 | Finnish Grand Prix | Imatra | Angel Nieto | Kork Ballington | Wil Hartog | Report | ||
| 8 | British Grand Prix | Silverstone | Loris Reggiani | Kork Ballington | Anton Mang | Randy Mamola | Report | |
| 9 | Czechoslovakian Grand Prix | Brno | Guy Bertin | Anton Mang | Anton Mang | Report | ||
| 10 | German Grand Prix | Nürburgring | Stefan Dörflinger | Guy Bertin | Kork Ballington | Jon Ekerold | Marco Lucchinelli | Report |
Read more about this topic: 1980 Grand Prix Motorcycle Racing Season