| Gran Premio d'Olanda |
|---|
Classe 350
| 1949 | TT Circuit Assen | Freddie FRITH (GBR) | VELOCETTE |
|---|---|---|---|
| 1950 | TT Circuit Assen | Bob FOSTER (GBR) | VELOCETTE |
| 1951 | TT Circuit Assen | Bill DORAN (GBR) | AJS |
| 1952 | TT Circuit Assen | Geoff DUKE (GBR) | NORTON |
| 1953 | TT Circuit Assen | Enrico LORENZETTI (ITA) | MOTO GUZZI |
| 1954 | TT Circuit Assen | Fergus ANDERSON (GBR) | MOTO GUZZI |
| 1955 | TT Circuit Assen | Ken KAVANAGH (AUS) | MOTO GUZZI |
| 1956 | TT Circuit Assen | Bill LOMAS (GBR) | MOTO GUZZI |
| 1957 | TT Circuit Assen | Keith CAMPBELL (AUS) | MOTO GUZZI |
| 1958 | TT Circuit Assen | John SURTEES (GBR) | MV AGUSTA |
| 1959 | TT Circuit Assen | Bob BROWN (AUS) | NORTON |
| 1960 | TT Circuit Assen | John SURTEES (GBR) | MV AGUSTA |
| 1961 | TT Circuit Assen | Gary HOCKING (RHO) | MV AGUSTA |
| 1962 | TT Circuit Assen | Jim REDMAN (RHO) | HONDA |
| 1963 | TT Circuit Assen | Jim REDMAN (RHO) | HONDA |
| 1964 | TT Circuit Assen | Jim REDMAN (RHO) | HONDA |
| 1965 | TT Circuit Assen | Jim REDMAN (RHO) | HONDA |
| 1966 | TT Circuit Assen | Mike HAILWOOD (GBR) | HONDA |
| 1967 | TT Circuit Assen | Mike HAILWOOD (GBR) | HONDA |
| 1968 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1969 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1970 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1971 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1972 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1973 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | MV AGUSTA |
| 1974 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | YAMAHA |
| 1975 | TT Circuit Assen | Dieter BRAUN (GER) | YAMAHA |
| 1976 | TT Circuit Assen | Giacomo AGOSTINI (ITA) | YAMAHA |
| 1977 | TT Circuit Assen | Kork BALLINGTON (SAF) | YAMAHA |
| 1978 | TT Circuit Assen | Kork BALLINGTON (SAF) | KAWASAKI |
| 1979 | TT Circuit Assen | Gregg HANSFORD (AUS) | KAWASAKI |
| 1980 | TT Circuit Assen | Jon EKEROLD (SAF) | YAMAHA |
| 1981 | TT Circuit Assen | Anton MANG (GER) | KAWASAKI |
| 1982 | TT Circuit Assen | Jean-Francois BALDE' (FRA) | KAWASAKI |