From WOI Encyclopedia Italia
| Name
| Seasons
| Championships
| MotoGP Wins
| 500cc Wins
| 350cc Wins
| 250cc Wins
| 125cc Wins
| 80cc Wins
| 50cc Wins
|
Norick Abe
| 1994-2004
| 0
| 0
| 3
| 0
| 0
| 0
| 0
| 0
|
Hubert Abold
| 1984, 1986-1989
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Karel Abrahám
| 2006
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Brian Adams
| 1970
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Duilio Agostini
| 1953-1955
| 0
| 0
| 0
| 1
| 0
| 0
| 0
| 0
|
Felice Agostini
| 1975, 1978
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Giacomo Agostini
| 1964-1977
| 15 500cc - 1966,1967,1968,1969,1970, 1971,1972,1975 350cc - 1968,1969,1970,1971,1972, 1973,1974
| 0
| 68
| 54
| 0
| 0
| 0
| 0
|
Jack Ahearn
| 1954-1955, 1963-1966
| 0
| 0
| 1
| 0
| 0
| 0
| 0
| 0
|
Mitsuo Akamatsu
| 1967
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Takashi Akita
| 1998
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Kousuke Akiyoshi
| 2006
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Raffaele Alberti
| 1950-1951
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Josef Albisser
| 1953
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Pierluigi Aldrovandi
| 1982-1983
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Alejandro Aleman
| 1978
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Eduardo Aleman
| 1977-1978, 1982
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Jaime Alguesuari
| 1973, 1975
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Julien Allemand
| 1998-2000
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Dick Allen
| 1964
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Rudy Allison
| 1954
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Pedro Alvarez
| 1968
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Luis Alvaro
| 1989, 1991
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Emilio Alzamora
| 1994-2003
| 1 125cc - 1999
| 0
| 0
| 0
| 0
| 4
| 0
| 0
|
Kunihiro Amano
| 1994
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Daniel Amatriain
| 1988-1989
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Dario Ambrosini
| 1949-1951
| 1 250cc - 1950
| 0
| 0
| 0
| 5
| 0
| 0
| 0
|
Ray Amm
| 1952-1954
| 0
| 0
| 3
| 4
| 0
| 0
| 0
| 0
|
Luigi Ancona
| 1993, 1995-1996
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Bob Anderson
| 1958-1960
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Chris Anderson
| 1963, 1966
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Fergus Anderson
| 1949-1951
| 2 350cc - 1953,1954
| 0
| 2
| 7
| 3
| 0
| 0
| 0
|
Hugh Anderson
| 1960-1966
| 4 125cc - 1963,1965 50cc - 1963,1964
| 0
| 0
| 0
| 0
| 16
| 0
| 8
|
John Anderson
| 1958
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Kent Andersson
| 1966, 1968-1975
| 2 125cc - 1973,1974
| 0
| 0
| 0
| 4
| 14
| 0
| 0
|
George Andrews
| 1950, 1957
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Luigi Anelli
| 1970, 1972
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Marcel Ankone
| 1972-1973, 1975-1976
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Hans-Georg Anscheidt
| 1962-1968
| 3 50cc - 1966,1967,1968
| 0
| 0
| 0
| 0
| 0
| 0
| 14
|
Alessandro Antonello
| 1996
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Haruchika Aoki
| 1993-1999, 2001-2002
| 2 125cc - 1995,1996
| 0
| 0
| 0
| 0
| 9
| 0
| 0
|
Nobuatsu Aoki
| 1990-2000, 2002-2004
| 0
| 0
| 0
| 0
| 1
| 0
| 0
| 0
|
Takuma Aoki
| 1993-1995, 1997
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Hiroshi Aoyama
| 2000-2006
| 0
| 0
| 0
| 0
| 3
| 0
| 0
| 0
|
Shuhei Aoyama
| 2002, 2004, 2006
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Andre Luc Appietto
| 1969-1970, 1973
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Robin Appleyard
| 1988-1990
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Junya Arai
| 1989
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Toshiyuki Arakaki
| 1991-1993, 1995-1996
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Fernando Aranda
| 1951
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Takeishi Araoka
| 1972
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Adrian Araujo
| 2000-2001
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Gilbert Argo
| 1969
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Manuel Arias
| 1975
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Ken Armstrong
| 1970
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Reg Armstrong
| 1949-1956
| 0
| 0
| 4
| 1
| 2
| 0
| 0
| 0
|
Arciso Artesiani
| 1949-1951
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Sandro Artusi
| 1956
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Javier Arumi
| 1988-1989
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Sadao Asami
| 1978-1981
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Giuseppe Ascareggi
| 1980-1985, 1987-1989
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Franz Aschenbrenner
| 2005-2006
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Stuart Aspin
| 1969
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Len Atlee
| 1966
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Pierre Audry
| 1975-1976
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Karl Auer
| 1969-1972, 1974-1977
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
August Auinger
| 1978-1989
| 0
| 0
| 0
| 0
| 0
| 5
| 0
| 0
|
Jean Auréal
| 1969-1970
| 0
| 0
| 0
| 0
| 0
| 1
| 0
| 0
|
Josef Autengruber
| 1958
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Stu Avant
| 1976, 1981-1982
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Rex Avery
| 1961-1962, 1964-1965, 1967
| 0
| 0
| 0
| 0
| 0
| 0
| 0
| 0
|
Masao Azuma
| 1996-2003
| 0
| 0
| 0
| 0
| 0
| 10
| 0
| 0
|