125cc Road Racing World Champions
1949 - 1969
| Year | Rider | Country | Make |
| 1949 | Nello Pagani | Italy | Mondial |
| 1950 | Bruno Ruffo | Italy | Mondial |
| 1951 | Carlo Ubbiali | Italy | Mondial |
| 1952 | Cecil Sandford | Britain | MV |
| 1953 | Werner Haas | W. Germany | NSU |
| 1954 | Rupert Hollaus | Austria | NSU |
| 1955 | Carlo Ubbiali | Italy | MV |
| 1956 | Carlo Ubbiali | Italy | MV |
| 1957 | Tarquinio Provini | Italy | Mondial |
| 1958 | Carlo Ubbiali | Italy | MV |
| 1959 | Carlo Ubbiali | Italy | MV |
| 1960 | Carlo Ubbiali | Italy | MV |
| 1961 | Tom Phillis | Australia | Honda |
| 1962 | Luigi Taveri | Switzerland | Honda |
| 1963 | Hugh Anderson | New Zealand | Suzuki |
| 1964 | Luigi Taueri | Switzerland | Honda |
| 1965 | Hugh Anderson | New Zealand | Suzuki |
| 1966 | Luigi Taveri | Switzerland | Honda |
| 1967 | Bill Ivy | Britain | Yamaha |
| 1968 | Phil Read | Britain | Yamaha |
| 1969 | Dave Simmonds | Britain | Kawasaki |