1981 Nations motorcycle Grand Prix
# 1981 Nations motorcycle Grand Prix

The 1981 Nations motorcycle Grand Prix was the fourth race of the 1981 Grand Prix motorcycle racing season. It took place on the weekend of 8–10 May 1981 at the Autodromo Nazionale Monza.

## Classification

### 500 cc

| Pos. | Rider | Team | Manufacturer | Time/Retired | Points |
| - | - | - | - | - | - |
| 1 | Kenny Roberts | Yamaha Motor Company | Yamaha | 52'02.100 | 15 |
| 2 | Graeme Crosby | Ingersoll Herin Team Suzuki | Suzuki | +4.650 | 12 |
| 3 | Barry Sheene | | Yamaha | +8.150 | 10 |
| 4 | Boet van Dulmen | | Yamaha | +33.480 | 8 |
| 5 | Marco Lucchinelli | Team Nava Suzuki | Suzuki | +36.170 | 6 |
| 6 | Guido Paci | | Yamaha | +37.120 | 5 |
| 7 | Jack Middelburg | Racing Westland | Suzuki | +1'21.650 | 4 |
| 8 | Franco Uncini | | Suzuki | +1'26.220 | 3 |
| 9 | Christian Sarron | Team Sonauto Gauloises | Yamaha | +1'36.480 | 2 |
| 10 | Sergio Pellandini | | Suzuki | +1'52.070 | 1 |
| 11 | Leandro Becheroni | | Suzuki | +1'55.910 | |
| 12 | Gianni Rolando | | Lombardini | +1 lap | |
| 13 | Walter Migliorati | | Suzuki | +1 lap | |
| 14 | Sadao Asami | | Yamaha | +1 lap | |
| 15 | Raymond Roche | | Suzuki | +1 lap | |
| 16 | Seppo Rossi | | Suzuki | +1 lap | |
| 17 | Keith Huewen | Heron Suzuki GB | Suzuki | +1 lap | |
| 18 | Alain Rothlisberger | | Suzuki | +2 laps | |
| 19 | Stuart Avant | Ellis Racing | Suzuki | +2 laps | |
| 20 | Marco Papa | | Suzuki | +2 laps | |
| 21 | Peter Sjöström | | Suzuki | +2 laps | |
| Ret | Takazumi Katayama | Honda International Racing | Honda | Retired | |
| Ret | Marc Fontan | Team Sonauto Gauloises | Yamaha | Retired | |
| Ret | Fabio Biliotti | | Suzuki | Retired | |
| Ret | Christian Estrosi | | Suzuki | Retired | |
| Ret | Virginio Ferrari | Cagiva Corse | Cagiva | Retired | |
| Ret | Philippe Coulon | | Suzuki | Retired | |
| Ret | Graziano Rossi | Morbidelli | Morbidelli | Retired | |
| Ret | Gianni Pelletier | | Suzuki | Retired | |
| Ret | Kork Ballington | Team Kawasaki | Kawasaki | Retired | |
| Ret | Gustav Reiner | Team Solitude Deutschland | Solo | Retired | |
| Ret | Dave Potter | | Yamaha | Retired | |
| Ret | Randy Mamola | Ingersoll Herin Team Suzuki | Suzuki | Retired | |
| Ret | Adelio Faccioli | | Suzuki | Retired | |
| Ret | Hiroyuki Kawasaki | Ingersoll Herin Team Suzuki | Suzuki | Retired | |
| DNS | Steve Parrish | Team Mitsui Yamaha | Yamaha | Did not start | |
| DNS | Carlo Perugini | Moto Sanvenero | Sanvenero | Did not start | |
| DNQ | Franck Gross | | Suzuki | Did not qualify | |
| DNQ | Jon Ekerold | Team Solitude Deutschland | Solo | Did not qualify | |
| DNQ | Josef Hage | Dieter Braun Team | Yamaha | Did not qualify | |
| DNQ | Michael Schmid | | Suzuki | Did not qualify | |
| DNQ | Roberto Pietri | | Suzuki | Did not qualify | |
| DNQ | Marco Greco | | Yamaha | Did not qualify | |
| Sources: ||||||
