Road Racing World Championship Grand Prix season.
The season consisted of nine Grand Prix races in five classes: 500cc, 350cc, 250cc, 125cc and Sidecars 500cc.
It began on 12 June, with Isle of Man TT and ended with Spanish Grand Prix on 4 October.
† After pronouncing the track unsafe before practice had begun, all the factory teams withdrew from the 350cc and 500cc classes in the proposed German Grand Prix.
Bold – Pole Italics – Fastest Lap Each constructor is awarded the same number of points as their best placed rider in each race.