| Gran Premio d'Olanda |
|---|
Classe 125
| 1949 | TT Circuit Assen | Nello PAGANI (ITA) | MONDIAL |
|---|---|---|---|
| 1950 | TT Circuit Assen | Bruno RUFFO (ITA) | MONDIAL |
| 1951 | TT Circuit Assen | Gianni LEONI (ITA) | MONDIAL |
| 1952 | TT Circuit Assen | Cecil SANDFORD (GBR) | MV AGUSTA |
| 1953 | TT Circuit Assen | Werner HASS (GER) | NSU |
| 1954 | TT Circuit Assen | Rupert HOLLAUS (NSU) | NSU |
| 1955 | TT Circuit Assen | Carlo UBBIALI (ITA) | MV AGUSTA |
| 1956 | TT Circuit Assen | Carlo UBBIALI (ITA) | MV AGUSTA |
| 1957 | TT Circuit Assen | Tarquinio PROVINI (ITA) | MONDIAL |
| 1958 | TT Circuit Assen | Carlo UBBIALI (ITA) | MV AGUSTA |
| 1959 | TT Circuit Assen | Carlo UBBIALI (ITA) | MV AGUSTA |
| 1960 | TT Circuit Assen | Carlo UBBIALI (ITA) | MV AGUSTA |
| 1961 | TT Circuit Assen | Tom PHILLIS (AUS) | HONDA |
| 1962 | TT Circuit Assen | Luigi TAVERI (SVI) | HONDA |
| 1963 | TT Circuit Assen | Hugh ANDERSON (NZL) | SUZUKI |
| 1964 | TT Circuit Assen | Jim REDMAN (RHO) | HONDA |
| 1965 | TT Circuit Assen | Mike DUFF (CAN) | YAMAHA |
| 1966 | TT Circuit Assen | Bill IVY (GBR) | YAMAHA |
| 1967 | TT Circuit Assen | Phil READ (GBR) | HONDA |
| 1968 | TT Circuit Assen | Phil READ (GBR) | YAMAHA |
| 1969 | TT Circuit Assen | Dave SIMMONDS (GBR) | KAWASAKI |
| 1970 | TT Circuit Assen | Dieter BRAUN (GER) | SUZUKI |
| 1971 | TT Circuit Assen | Angel NIETO (SPA) | DERBI |
| 1972 | TT Circuit Assen | Angel NIETO (SPA) | DERBI |
| 1973 | TT Circuit Assen | Eugenio LAZZARINI (ITA) | MAICO |
| 1974 | TT Circuit Assen | Bruno KNEUBUHLER (SVI) | YAMAHA |
| 1975 | TT Circuit Assen | Pier Paolo BIANCHI (ITA) | MORBIDELLI |
| 1976 | TT Circuit Assen | Pier Paolo BIANCHI (ITA) | MORBIDELLI |
| 1977 | TT Circuit Assen | Angel NIETO (SPA) | BULTACO |
| 1978 | TT Circuit Assen | Eugenio LAZZARINI (ITA) | MBA |
| 1979 | TT Circuit Assen | Angel NIETO (SPA) | MINARELLI |
| 1980 | TT Circuit Assen | Angel NIETO (SPA) | MINARELLI |
| 1981 | TT Circuit Assen | Angel NIETO (SPA) | MINARELLI |
| 1982 | TT Circuit Assen | Angel NIETO (SPA) | GARELLI |
| 1983 | TT Circuit Assen | Angel NIETO (SPA) | GARELLI |
| 1984 | TT Circuit Assen | Angel NIETO (SPA) | GARELLI |
| 1985 | TT Circuit Assen | Pier Paolo BIANCHI (ITA) | MBA |
| 1986 | TT Circuit Assen | Luca CADALORA (ITA) | GARELLI |
| 1987 | TT Circuit Assen | Fausto GRESINI (ITA) | GARELLI |
| 1988 | TT Circuit Assen | Jorge MARTINEZ (SPA) | DERBI |
| 1989 | TT Circuit Assen | Hans SPAAN (OLA) | HONDA |
| 1990 | TT Circuit Assen | Doriano ROMBONI (ITA) | HONDA |
| 1991 | TT Circuit Assen | Ralf WALDMANN (GER) | HONDA |
| 1992 | TT Circuit Assen | Ezio GIANOLA (ITA) | HONDA |
| 1993 | TT Circuit Assen | Dirk RAUDIES (GER) | HONDA |
| 1994 | TT Circuit Assen | Takeshi TSUJIMURA (JPN) | HONDA |
| 1995 | TT Circuit Assen | Dirk RAUDIES (GER) | HONDA |
| 1996 | TT Circuit Assen | Emilio ALZAMORA (SPA) | HONDA |
| 1997 | TT Circuit Assen | Valentino ROSSI (ITA) | APRILIA |
| 1998 | TT Circuit Assen | Marco MELANDRI (ITA) | HONDA |
| 1999 | TT Circuit Assen | Masao AZUMA (JPN) | HONDA |
| 2000 | TT Circuit Assen | Yoichi UI (JPN) | DERBI |
| 2001 | TT Circuit Assen | Toni ELIAS (SPA) | HONDA |
| 2002 | TT Circuit Assen | Daniel PEDROSA (SPA) | HONDA |
| 2003 | TT Circuit Assen | Steve JENKNER (GER) | APRILIA |
| 2004 | TT Circuit Assen | Jorge LORENZO (SPA) | DERBI |
| 2005 | TT Circuit Assen | Gabor TALMACSI (UNG) | KTM |
| 2006 | TT Circuit Assen | Mika KALLIO (FIN) | KTM |
| 2007 | TT Circuit Assen | Mattia PASINI (ITA) | APRILIA |
| 2008 | TT Circuit Assen | Gabor TALMACSI (UNG) | APRILIA |
| 2009 | TT Circuit Assen | Sergio GADEA (SPA) | APRILIA |
| 2010 | TT Circuit Assen | Marc MARQUEZ (SPA) | DERBI |
| 2011 | TT Circuit Assen | Maverick VINALES (SPA) | APRILIA |
Moto3
| 2012 | TT Circuit Assen | Maverick VINALES (SPA) | FTR HONDA |
|---|---|---|---|
| 2013 | TT Circuit Assen | Luis SALOM (SPA) | KTM |
| 2014 | TT Circuit Assen | Alex MARQUEZ (SPA) | HONDA |
| 2015 | TT Circuit Assen | Miguel OLIVEIRA (POR) | KTM |
| 2016 | TT Circuit Assen | Francesco BAGNAIA (ITA) | MAHINDRA |
| 2017 | TT Circuit Assen | Aron CANET (SPA) | HONDA |
| 2018 | TT Circuit Assen | Jorge MARTIN (SPA) | HONDA |
| 2019 | TT Circuit Assen | Tony ARBOLINO (ITA) | HONDA |
| 2020 | cancellato per l'emergenza Coronavirus | ||
| 2021 | TT Circuit Assen | Dennis FOGGIA (ITA) | HONDA |
| 2022 | TT Circuit Assen | Ayumu SASAKI (JPN) | HUSQVARNA |
| 2023 | TT Circuit Assen | Jaume MASIÁ (SPA) | HONDA NSF250R |
| 2024 | TT Circuit Assen | Ivan ORTOLÁ (SPA) | KTM RC 250 GP |
| 2025 | TT Circuit Assen | Jose Antonio RUEDA (SPA) | KTM |