List of 350cc World Riders' Champions

[1] The Grand Prix Road-Racing World Championship was established in 1949 by the sport's governing body, the Fédération Internationale de Motocyclisme (FIM), and is the oldest motorsport World Championship.

[3] The 350cc referred to the size of the engines of the motorcycles that participated in the class.

[3] Each season consisted of five to 12 Grands Prix contested on closed circuits, as opposed to public roads.

Points earned in these events counted toward the drivers' and constructors' world championships.

^ John Surtees and Gary Hocking finished the 1960 championship tied on 22 points.

A man wearing a white leather top with writing on it. His arms are crossed and there is a man standing in front to his left.
Giacomo Agostini , who won seven 350cc championships