Information
Calendar
| # | Date | Track / Event | Winner(s) | Car | Results |
|---|---|---|---|---|---|
| 01 | 1925/??/?? | Assen (NLD) | Piet van Wijngaarden | Race | |
| 02 | 1926/??/?? | Assen (NLD) | Piet van Wijngaarden | Race | |
| 03 | 1927/??/?? | Assen (NLD) | Stanley Woods | Race | |
| 04 | 1928/??/?? | Assen (NLD) | Graham Walker | Race | |
| 05 | 1929/??/?? | Assen (NLD) | Ernie Nott | Race | |
| 06 | 1930/??/?? | Assen (NLD) | Graham Walker | Race | |
| 07 | 1931/??/?? | Assen (NLD) | Tim Hunt | Race | |
| 08 | 1932/??/?? | Assen (NLD) | Tim Hunt | Race | |
| 09 | 1933/??/?? | Assen (NLD) | Stanley Woods | Race | |
| 10 | 1934/06/23 | Assen (NLD) | Pol Demeuter | FN | Race |
| 11 | 1935/??/?? | Assen (NLD) | Jimmy Guthrie | Race | |
| 12 | 1936/??/?? | Assen (NLD) | Jimmy Guthrie | Race | |
| 13 | 1937/??/?? | Assen (NLD) | Karl Gall | Race | |
| 14 | 1938/??/?? | Assen (NLD) | Georg Meier | Race | |
| 15 | 1939/??/?? | Assen (NLD) | Georg Meier | Race | |
| 16 | 1946/??/?? | Assen (NLD) | Piet Knijnenburg | Race | |
| 17 | 1947/??/?? | Assen (NLD) | Artie Bell | Race | |
| 18 | 1948/??/?? | Assen (NLD) | Artie Bell | Race | |
| 19 | 1949/07/09 | Assen (NLD) | Nello Pagani | Gilera | Race |
| 20 | 1950/07/08 | Assen (NLD) | Umberto Masetti | Gilera | Race |
| 21 | 1951/07/07 | Assen (NLD) | Geoff Duke | Norton | Race |
| 22 | 1952/06/28 | Assen (NLD) | Umberto Masetti | Gilera | Race |
| 23 | 1953/06/27 | Assen (NLD) | Geoff Duke | Gilera | Race |
| 24 | 1954/07/10 | Assen (NLD) | Geoff Duke | Gilera | Race |
| 25 | 1955/07/30 | Assen (NLD) | Geoff Duke | Gilera | Race |
| 26 | 1956/06/30 | Assen (NLD) | John Surtees | MV Agusta | Race |
| 27 | 1957/06/29 | Assen (NLD) | John Surtees | MV Agusta | Race |
| 28 | 1958/06/28 | Assen (NLD) | John Surtees | MV Agusta | Race |
| 29 | 1959/06/27 | Assen (NLD) | John Surtees | MV Agusta | Race |
| 30 | 1960/06/25 | Assen (NLD) | Remo Venturi | MV Agusta | Race |
| 31 | 1961/06/24 | Assen (NLD) | Gary Hocking | MV Agusta | Race |
| 32 | 1962/06/30 | Assen (NLD) | Mike Hailwood | MV Agusta | Race |
| 33 | 1963/06/29 | Assen (NLD) | John Hartle | Gilera | Race |
| 34 | 1964/06/27 | Assen (NLD) | Mike Hailwood | MV Agusta | Race |
| 35 | 1965/06/26 | Assen (NLD) | Mike Hailwood | MV Agusta | Race |
| 36 | 1966/06/25 | Assen (NLD) | Jim Redman | Honda | Race |
| 37 | 1967/06/24 | Assen (NLD) | Mike Hailwood | Honda | Race |
| 38 | 1968/06/29 | Assen (NLD) | Giacomo Agostini | MV Agusta | Race |
| 39 | 1969/06/28 | Assen (NLD) | Giacomo Agostini | MV Agusta | Race |
| 40 | 1970/06/27 | Assen (NLD) | Giacomo Agostini | MV Agusta | Race |
| 41 | 1971/06/26 | Assen (NLD) | Giacomo Agostini | MV Agusta | Race |
| 42 | 1972/06/24 | Assen (NLD) | Giacomo Agostini | MV Agusta | Race |
| 43 | 1973/06/23 | Assen (NLD) | Phil Read | MV Agusta | Race |
| 44 | 1974/06/29 | Assen (NLD) | Giacomo Agostini | Yamaha | Race |
| 45 | 1975/06/28 | Assen (NLD) | Barry Sheene | Suzuki | Race |
| 46 | 1976/06/26 | Assen (NLD) | Barry Sheene | Suzuki | Race |
| 47 | 1977/06/25 | Assen (NLD) | Wil Hartog | Suzuki | Race |
| 48 | 1978/06/24 | Assen (NLD) | Johnny Cecotto | Yamaha | Race |
| 49 | 1979/06/23 | Assen (NLD) | Virginio Ferrari | Suzuki | Race |
| 50 | 1980/06/28 | Assen (NLD) | Jack Middelburg | Yamaha | Race |
| 51 | 1981/06/27 | Assen (NLD) | Marco Lucchinelli | Suzuki | Race |
| 52 | 1982/06/26 | Assen (NLD) | Franco Uncini | Suzuki | Race |
| 53 | 1983/06/25 | Assen (NLD) | Kenny Roberts | Yamaha | Race |
| 54 | 1984/06/30 | Assen (NLD) | Randy Mamola | Honda | Race |
| 55 | 1985/06/29 | Assen (NLD) | Randy Mamola | Honda | Race |
| 56 | 1986/06/28 | Assen (NLD) | Wayne Gardner | Honda | Race |
| 57 | 1987/06/27 | Assen (NLD) | Eddie Lawson | Yamaha | Race |
| 58 | 1988/06/25 | Assen (NLD) | Wayne Gardner | Honda | Race |
| 59 | 1989/06/24 | Assen (NLD) | Wayne Rainey | Yamaha | Race |
| 60 | 1990/06/30 | Assen (NLD) | Kevin Schwantz | Suzuki | Race |
| 61 | 1991/06/29 | Assen (NLD) | Kevin Schwantz | Suzuki | Race |
| 62 | 1992/06/27 | Assen (NLD) | Alex Crivillé | Honda | Race |
| 63 | 1993/06/26 | Assen (NLD) | Kevin Schwantz | Suzuki | Race |
| 64 | 1994/06/25 | Assen (NLD) | Michael Doohan | Honda | Race |
| 65 | 1995/06/24 | Assen (NLD) | Michael Doohan | Honda | Race |
| 66 | 1996/06/29 | Assen (NLD) | Michael Doohan | Honda | Race |
| 67 | 1997/06/28 | Assen (NLD) | Michael Doohan | Honda | Race |
| 68 | 1998/06/27 | Assen (NLD) | Michael Doohan | Honda | Race |
| 69 | 1999/06/26 | Assen (NLD) | Tadayuki Okada | Honda | Race |
| 70 | 2000/06/24 | Assen (NLD) | Alex Barros | Honda | Race |
| 71 | 2001/06/30 | Assen (NLD) | Max Biaggi | Yamaha | Race |