1970 Grand Prix motorcycle racing season

Phil Read (8) finished second at the 1970 Dutch TT

The 1970 Grand Prix motorcycle racing season was the 22nd F.I.M. Road Racing World Championship Grand Prix season. The season consisted of twelve Grand Prix races in six classes: 500cc, 350cc, 250cc, 125cc, 50cc and Sidecars 500cc. It began on 3 May, with West German Grand Prix and ended with Spanish Grand Prix on 27 September.

As of 2024, this is the most recent season the Japanese manufacturers failed to score a single win in the premier class.