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