| Year | Winning Rider | Manufacturer |
|---|---|---|
| 1949 | Bill Doran |
AJS
|
| 1950 | Umberto Masetti (1/2) |
Gilera
|
| 1951 | Geoff Duke (1/2) |
Norton
|
| 1952 | Umberto Masetti (2/2) |
Gilera
|
| 1953 | Alfredo Milani |
Gilera
|
| 1954 | Geoff Duke (2/2) |
Gilera
|
| 1955 | Giuseppe Colnago |
Gilera
|
| 1956 | John Surtees (1/4) |
MV Agusta
|
| 1957 | Libero Liberati |
Gilera
|
| 1958 | John Surtees (2/4) |
MV Agusta
|
| 1959 | John Surtees (3/4) |
MV Agusta
|
| 1960 | John Surtees (4/4) |
MV Agusta
|
| 1961 | Gary Hocking |
MV Agusta
|
| 1962 | Mike Hailwood (1/4) |
MV Agusta
|
| 1963 | Mike Hailwood (2/4) |
MV Agusta
|
| 1964 | Mike Hailwood (3/4) |
MV Agusta
|
| 1965 | Mike Hailwood (4/4) |
MV Agusta
|
| 1966 | Giacomo Agostini (1/8) |
MV Agusta
|
| 1967 | Giacomo Agostini (2/8) |
MV Agusta
|
| 1968 | Giacomo Agostini (3/8) |
MV Agusta
|
| 1969 | Giacomo Agostini (4/8) |
MV Agusta
|
| 1970 | Giacomo Agostini (5/8) |
MV Agusta
|
| 1971 | Giacomo Agostini (6/8) |
MV Agusta
|
| 1972 | Giacomo Agostini (7/8) |
MV Agusta
|
| 1973 | Giacomo Agostini (8/8) |
MV Agusta
|
| 1974 | Phil Read (1/2) |
MV Agusta
|
| 1975 | Phil Read (2/2) |
MV Agusta
|
| 1976 | John Williams |
Suzuki
|
| 1977 | Barry Sheene |
Suzuki
|
| 1978 | Wil Hartog |
Suzuki
|
| 1979 | Dennis Ireland |
Suzuki
|
| 1981 | Marco Lucchinelli |
Suzuki
|
| 1982 | Freddie Spencer (1/3) |
Honda
|
| 1983 | Kenny Roberts |
Yamaha
|
| 1984 | Freddie Spencer (2/3) |
Honda
|
| 1985 | Freddie Spencer (3/3) |
Honda
|
| 1986 | Randy Mamola |
Yamaha
|
| 1988 | Wayne Gardner |
Honda
|
| 1989 | Eddie Lawson |
Honda
|
| 1990 | Wayne Rainey |
Yamaha
|