The 1956 Grand Prix motorcycle racing season was the eighth F.I.M. Road Racing World Championship Grand Prix season. The season consisted of six Grand Prix races in five classes: 500cc, 350cc, 250cc, 125cc and Sidecars 500cc. It began on 8 June, with Isle of Man TT and ended with Nations Grand Prix in Italy on 9 September.
Reigning 500cc champion Geoff Duke had to serve a six months ban at the start of the season for supporting a strike by privateer riders over starting money at the 1955 Dutch TT.[1][2]