J
| Name | Seasons | World Championships | National Championships | Races | Wins |
|---|---|---|---|---|---|
| Georges Jobé | 1979-1992 | 250cc- 1980, 1983 500cc- 1987, 1991, 1992 |
250cc- 1978, 1980-1983 500cc- 1984, 1989 |
- | 31 |
| Gunnar Johansson | - | - | - | - | 3 |
| Peter Johansson | - | - | - | - | 9 |
| Rick Johnson | 1980-1989 | 1983 Four Stroke World Champion | AMA 250cc- 1984, 1986, 1987 AMA 500cc- 1987, 1988 AMA SX- 1986, 1988 |
- | 61 |
| Gary Jones | 1971-1976 | - | AMA 250cc- 1972-1974 | - | - |
| Mark Jones | - | - | - | - | - |
| Ake Jonsson | 1963-1978 | - | - | - | 9 |
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