campeones de 350cc

1949	Freddie Frith	Velocette
1950	Bob Foster	Velocette
1951	Geoff Duke	Norton
1952	Geoff Duke	Norton
1953	Fergus Anderson	Moto Guzzi
1954	Fergus Anderson	Moto Guzzi
1955	Bill Lomas	Moto Guzzi
1956	Bill Lomas	Moto Guzzi
1957	Keith Campbell	Moto Guzzi
1958	John Surtees	MV Agusta
1959	John Surtees	MV Agusta
1960	John Surtees	MV Agusta
1961	Gary Hocking	MV Agusta
1962	Jim Redman	Honda
1963	Jim Redman	Honda
1964	Jim Redman	Honda
1965	Jim Redman	Honda
1966	Mike Hailwood	Honda
1967	Mike Hailwood	Honda
1968	Giacomo Agostini	MV Agusta
1969	Giacomo Agostini	MV Agusta
1970	Giacomo Agostini	MV Agusta
1971	Giacomo Agostini	MV Agusta
1972	Giacomo Agostini	MV Agusta
1973	Giacomo Agostini	MV Agusta
1974	Giacomo Agostini	Yamaha
1975	Johnny Cecotto	Yamaha
1976	Walter Villa	Harley Davidson
1977	Takazumi Katayama	Yamaha
1978	Kork Ballington	Kawasaki
1979	Kork Ballington	Kawasaki
1980	Jonnie Ekerold	Bimota
1981	Anton Mang	Kawasaki
1982	Anton Mang	Kawasaki