The 1981 San Marino motorcycle Grand Prix was the tenth race of the 1981 Grand Prix motorcycle racing season. It took place on the weekend of 10-12 July 1981 at the Autodromo Dino Ferrari.
Classification 500 cc Pos. Rider Team Manufacturer Time/Retired Points 1 Marco Lucchinelli Team Nava Suzuki Suzuki 42'19.980 15 2 Barry Sheene Yamaha +3.310 12 3 Graeme Crosby Ingersoll Herin Team Suzuki Suzuki +6.460 10 4 Randy Mamola Ingersoll Herin Team Suzuki Suzuki +44.780 8 5 Kork Ballington Team Kawasaki Kawasaki +1'12.190 6 6 Guido Paci Yamaha +1'21.280 5 7 Jack Middelburg Racing Westland Suzuki +1'22.720 4 8 Marc Fontan Team Sonauto Gauloises +1'22.850 3 9 Gianni Pelletier Suzuki +1'27.380 2 10 Keith Huewen Heron Suzuki GB Suzuki +1'35.230 1 11 Sergio Pellandini Suzuki +1'43.040 12 Christian Sarron Team Sonauto Gauloises Yamaha +2'07.320 13 Walter Migliorati Suzuki +2'21.660 14 Seppo Rossi Suzuki +2'22.680 15 Kimmo Kopra Suzuki +1 lap 16 Michel Frutschi Elf Motor Racing Team Yamaha +1 lap 17 Fabio Biliotti Suzuki +1 lap 18 Raffaele Pasqual Yamaha +1 lap 19 Virginio Ferrari Cagiva Corse Cagiva +1 lap Ret Carlo Perugini Moto Sanvenero Sanvenero Retired Ret Gianni Rolando Lombardini Retired Ret Bernard Fau Yamaha Retired Ret Boet van Dulmen Yamaha Retired Ret Børge Nielsen Suzuki Retired Ret Christian Estrosi Suzuki Retired Ret Franco Uncini Suzuki Retired Ret Philippe Coulon Suzuki Retired Ret Sadao Asami Yamaha Retired Ret Steve Parrish Team Mitsui Yamaha Yamaha Retired Ret Willem Zoet Stimorol Racing Suzuki Retired DNS Kenny Roberts Yamaha Motor Company Yamaha Did not start DNQ Peter Sjöström Suzuki Did not qualify DNQ Michael Schmid Suzuki Did not qualify DNQ Alain Rothlisberger Suzuki Did not qualify DNQ Josef Hage Dieter Braun Team Yamaha Did not qualify DNQ Wolfgang von Muralt Yamaha Did not qualify DNQ Antonio Grecco Suzuki Did not qualify Sources:
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