By season
1924–1939
| Year | 1000 cc | 750 cc | 500 cc | 350 cc | 250 cc | 175 cc | 125 cc |
|---|---|---|---|---|---|---|---|
| 1924 |  Guido Mentasti (Moto Guzzi)
|
 Jimmie Simpson (AJS)
|
 Maurice van Geert (Rush/Blackburne)
|
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| 1925 | Mario Revelli (GR/JAP)
|
Tazio Nuvolari (Bianchi)
|
Jock Porter (New Gerrard)
|
Mario Vaga (Maffeis/Blackburne)
|
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| 1926 | Jimmie Simpson (AJS)
|
Frank Longman (AJS)
|
Jock Porter (New Gerrard)
|
René Milhoux (Ready/Blackburne)
|
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| 1927 |  Josef Giggenbach (Bayerland/JAP)
|
Josef Stelzer (BMW)
|
Graham Walker (Sunbeam)
|
Jimmie Simpson (AJS)
|
Cecil Ashby (OK-Supreme)
|
Willy Henkelmann (DKW)
|
|
| 1928 | Wal Handley (Motosacoche)
|
Wal Handley (Motosacoche)
|
Cecil Ashby (OK-Supreme)
|
Alfredo Panella (Ladetto/Blatto)
|
 Paul Lehmann (Moser)
| ||
| 1929 | Tim Hunt (Norton)
|
Leo Davenport (AJS)
|
Frank Longman (OK-Supreme)
|
Josef Klein (DKW)
|
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| 1930 |  Henry Tyrell-Smith (Rudge)
|
Ernie Nott (Rudge)
|
Syd Crabtree (Excelsior)
|
Yvan Goor (DKW)
|
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| 1931 | Tim Hunt (Norton)
|
Ernie Nott (Rudge)
|
Graham Walker (Rudge)
|
Eric Fernihough (Excelsior)
|
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| 1932 | Piero Taruffi (Norton)
|
 Louis Jeannin (Jonghi)
|
Riccardo Brusi (Moto Guzzi)
|
Carlo Baschieri (Benelli)
|
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| 1933 |  Gunnar Kalén (Husqvarna)
|
Jimmie Simpson (Norton)
|
Charlie Dodson (New Imperial)
|
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| 1934 | Pol Demeuter (FN)
|
Jimmie Simpson (Norton)
|
 Walfried Winkler (DKW)
|
Yvan Goor (Benelli)
|
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| 1935 | Jimmie Guthrie (Norton)
|
Wal Handley (Velocette)
|
Arthur Geiß (DKW)
|
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| 1936 | Jimmie Guthrie (Norton)
|
Freddie Frith (Norton)
|
Henry Tyrell-Smith (Excelsior) |
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| 1937 | Jimmie Guthrie (Norton)
|
Jimmie Guthrie (Norton)
|
Omobono Tenni (Moto Guzzi)
|
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| 1938 |  Georg Meier (BMW)
|
Ted Mellors (Velocette)
|
Ewald Kluge (DKW)
|
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| 1939 | Dorino Serafini (Gilera)
|
Heiner Fleischmann (DKW)
|
Ewald Kluge (DKW)
|
1947–1948
| Year | 500 cc | 350 cc | 250 cc | Sidecars |
|---|---|---|---|---|
| 1947 | Omobono Tenni (Moto Guzzi)
|
Fergus Anderson (Velocette)
|
Bruno Francisci (Moto Guzzi)
|
Luigi Cavanna / Paolo Cavanna (Moto Guzzi)
|
| 1948 |  Enrico Lorenzetti (Moto Guzzi)
|
Freddie Frith (Velocette)
|
Maurice Cann (Moto Guzzi)
|
1981–1989
| Year | 500 cc | 250 cc | 125 cc | 50 cc |
|---|---|---|---|---|
| 1981 | Leandro Becheroni (Suzuki)
|
 Herbert Hauf (Yamaha)
|
Pierluigi Aldrovandi (MBA)
|
Giuseppe Ascareggi (Minarelli)
|
| 1982 | Fabio Biliotti (Suzuki)
|
Reinhold Roth (FKN-Yamaha)
|
Stefano Caracchi (MBA)
|
 Zdravko Matulja (Tomos)
|
| Year | 500 cc | 250 cc | 125 cc | 80 cc |
| 1983 | Peter Sköld (Suzuki)
|
 Carlos Cardús (Kobas/Rotax)
|
Willy Hupperich (MBA)
|
Hubert Abold (Zündapp)
|
| 1984 |  Eero Hyvärinen (Suzuki)
|
Gary Noel (Exactweld)
|
Norbert Peschke (MBA)
|
Richard Bay (Rupp)
|
| 1985 | Marco Gentile (Yamaha)
|
Massimo Matteoni (Honda)
|
Pierfrancesco Chili (MBA)
|
Günter Schirnhofer (Rupp)
|
| 1986 | Massimo Messere (Honda)
|
 Hans Lindner (Rotax)
|
Claudio Macciotta (MBA)
|
Bruno Casanova (Unimoto)
|
| 1987 | Manfred Fischer (Honda)
|
 Xavier Cardelús (JJ Cobas/Rotax)
|
Adolf Stadler (MBA)
|
Julián Miralles (Derbi)
|
| 1988 | Alberto Rota (Honda)
|
Fausto Ricci (Yamaha/Aprilia)
|
Emilio Cuppini (Garelli)
|
 Bogdan Nikolov (Krauser)
|
| 1989 | Peter Lindén (Honda)
|
Andrea Borgonovo (Aprilia)
|
Gabriele Debbia (Aprilia)
|
Jaime Mariano (Casal)
|
1990–2007
| Year | 250cc | 125cc |
|---|---|---|
| 1990 |  Leon van der Heijen (Aprilia)
|
Xavier Debón (JJ Cobas/Rotax)
|
| 1991 | Max Biaggi (Aprilia)
|
Oliver Koch (Honda)
|
| 1992 | Luis Carlos Maurel (Aprilia)
|
Juan Borja (Honda)
|
| 1993 | Giuseppe Fiorillo (Aprilia)
|
Stefano Perugini (Aprilia)
|
| 1994 | Régis Laconi (Honda)
|
Ivan Cremonini (Honda)
|
| 1995 | Luca Boscoscuro (Aprilia)
|
Lucio Cecchinello (Honda)
|
| 1996 |  Sebastián Porto (Aprilia)
|
Jorge Martínez (Aprilia)
|
| 1997 | Davide Bulega (Aprilia)
|
Arnaud Vincent (Aprilia)
|
| 1998 | Alex Hofmann (Honda)
|
Max Sabbatani (Aprilia)
|
| 1999 | Ivan Clementi (Aprilia)
|
Klaus Nöhles (Honda)
|
| 2000 | Riccardo Chiarello (Aprilia)
|
Diego Giugovaz (Aprilia)
|
| 2001 | David García (Honda)
|
Andrea Dovizioso (Aprilia)
|
| 2002 | Álvaro Molina (Aprilia)
|
Marco Simoncelli (Aprilia)
|
| 2003 |  Taro Sekiguchi (Yamaha)
|
 Mattia Angeloni (Honda)
|
| 2004 | Álvaro Molina (Aprilia)
|
Michele Pirro (Aprilia)
|
| 2005 | Álvaro Molina (Aprilia)
|
Michele Conti (Honda)
|
| 2006 | Álvaro Molina (Aprilia)
|
Philipp Eitzinger (Honda)
|
| 2007 | Álvaro Molina (Aprilia)
|
 Alen Győrfi (Honda)
|
2008–2013
| Year | 125cc |
|---|---|
| 2008 | Lorenzo Savadori (Aprilia)
|
| 2009 | Marcel Schrötter (Honda)
|
| 2010 | Maverick Viñales (Aprilia)
|
| 2011 | Romano Fenati (Aprilia)
|
| Year | 125cc/Moto3 |
| 2012 | Matteo Ferrari (Honda)
|
| 2013 |  Karel Hanika (KTM)
|