The 1952 Grand Prix motorcycle racing season was the fourth F.I.M. Road Racing World Championship Grand Prix season. The season consisted of eight Grand Prix races in five classes: 500cc, 350cc, 250cc
Umberto Masetti won his second and final 500cc World Championship title in 1952.
Geoff Duke (pictured in 1951) successfully defended his 350cc World Championship title.
Enrico Lorenzetti won his only world championship in the 250cc class.