500cc/MotoGP champions
| Season
| Rider
| Constructor
|
| 2012 |
Jorge Lorenzo |
Yamaha |
| 2011 |
Casey Stoner |
Honda |
| 2010 |
Jorge Lorenzo |
Yamaha |
| 2009 |
Valentino Rossi |
Yamaha |
| 2008 |
Valentino Rossi |
Yamaha |
| 2007 |
Casey Stoner |
Ducati |
| 2006 |
Nicky Hayden |
Honda |
| 2005 |
Valentino Rossi |
Yamaha |
| 2004 |
Valentino Rossi |
Yamaha |
| 2003 |
Valentino Rossi |
Honda |
| 2002 |
Valentino Rossi |
Honda |
| 2001 |
Valentino Rossi |
Honda |
| 2000 |
Kenny Roberts, Jr. |
Suzuki |
| 1999 |
Ëlex CrivillŽ |
Honda |
| 1998 |
Michael Doohan |
Honda |
| 1997 |
Michael Doohan |
Honda |
| 1996 |
Michael Doohan |
Honda |
| 1995 |
Michael Doohan |
Honda |
| 1994 |
Michael Doohan |
Honda |
| 1993 |
Kevin Schwantz |
Suzuki |
| 1992 |
Wayne Rainey |
Yamaha |
| 1991 |
Wayne Rainey |
Yamaha |
| 1990 |
Wayne Rainey |
Yamaha |
| 1989 |
Eddie Lawson |
Honda |
| 1988 |
Eddie Lawson |
Yamaha |
| 1987 |
Wayne Gardner |
Honda |
| 1986 |
Eddie Lawson |
Yamaha |
| 1985 |
Freddie Spencer |
Honda |
| 1984 |
Eddie Lawson |
Yamaha |
| 1983 |
Freddie Spencer |
Honda |
| 1982 |
Franco Uncini |
Suzuki |
| 1981 |
Marco Lucchinelli |
Suzuki |
| 1980 |
Kenny Roberts |
Yamaha |
| 1979 |
Kenny Roberts |
Yamaha |
| 1978 |
Kenny Roberts |
Yamaha |
| 1977 |
Barry Sheene |
Suzuki |
| 1976 |
Barry Sheene |
Suzuki |
| 1975 |
Giacomo Agostini |
Yamaha |
| 1974 |
Phil Read |
MV Agusta |
| 1973 |
Phil Read |
MV Agusta |
| 1972 |
Giacomo Agostini |
MV Agusta |
| 1971 |
Giacomo Agostini |
MV Agusta |
| 1970 |
Giacomo Agostini |
MV Agusta |
| 1969 |
Giacomo Agostini |
MV Agusta |
| 1968 |
Giacomo Agostini |
MV Agusta |
| 1967 |
Giacomo Agostini |
MV Agusta |
| 1966 |
Giacomo Agostini |
MV Agusta |
| 1965 |
Mike Hailwood |
MV Agusta |
| 1964 |
Mike Hailwood |
MV Agusta |
| 1963 |
Mike Hailwood |
MV Agusta |
| 1962 |
Mike Hailwood |
MV Agusta |
| 1961 |
Gary Hocking |
MV Agusta |
| 1960 |
John Surtees |
MV Agusta |
| 1959 |
John Surtees |
MV Agusta |
| 1958 |
John Surtees |
MV Agusta |
| 1957 |
Libero Liberati |
Gilera |
| 1956 |
John Surtees |
MV Agusta |
| 1955 |
Geoff Duke |
Gilera |
| 1954 |
Geoff Duke |
Gilera |
| 1953 |
Geoff Duke |
Gilera |
| 1952 |
Umberto Masetti |
Gilera |
| 1951 |
Geoff Duke |
Norton |
| 1950 |
Umberto Masetti |
Gilera |
| 1949 |
Leslie Graham |
AJS |