B
| Name | Seasons | World Championships | National Championships | Races | Wins |
|---|---|---|---|---|---|
| René Baeten | 1948-1960 | 500cc- 1958 | - | - | 8 |
| Blake Baggett | - | - | - | - | - |
| David Bailey | 1979-1987 | - | AMA 250cc- 1983 AMA SX- 1983 AMA 500cc- 1984 |
- | - |
| John Banks | - | - | - | - | 4 |
| Justin Barcia | 2010–present | - | - | - | - |
| Mark Barnett | 1977-1985 | - | AMA 125cc- 1980-1982 AMA SX- 1981 |
- | - |
| Jonathan Barragan | - | - | - | - | - |
| Andrea Bartolini | 1988-2003 | 500cc- 1999 | - | - | 15 |
| Willy Bauer | 1972-1978 | - | - | - | 4 |
| Jean-Michel Bayle | 1987-1991 | 125cc- 1989, 250cc- 1990 |
AMA 250cc- 1991 AMA SX- 1991 AMA 500cc- 1991 |
- | 15 |
| Pit Beirer | 1989-2003 | - | - | - | 7 |
| Christian Beggi | - | - | - | - | - |
| Mike Bell | - | 1977 Four Stroke World Champion | AMA 250cc SX - 1980 | - | - |
| John van den Berk | 1984-1995 | 125cc- 1987, 250cc- 1988 |
- | - | 9 |
| Marnicq Bervoets | 1990-2001 | - | - | - | 19 |
| Fritz Betzlbacher | - | - | - | - | 4 |
| Dave Bickers | 1959-1968 | - | - | - | 18 |
| Julien Bill | - | MX3 - 2011 | - | - | 11 |
| Mark Blackwell | 1970s | - | - | - | - |
| Evgeny Bobryshev | - | - | - | - | 3 |
| Anthony Boissiere | - | - | - | - | - |
| Frédéric Bolley | 1987- | 250cc- 1999, 2000 | - | - | 13 |
| Xavier Boog | - | - | - | - | - |
| Damon Bradshaw | 1989-1997 | - | AMA SX 125cc East- 1989 | - | - |
| Justin Brayton | - | - | - | - | - |
| Goat Breker | - | 1979, 1988 Four Stroke World Champion | - | - | - |
| Sven Breugelmans | 2003-2009 | MX-3 - 2005, 2008 | - | - | 10 |
| Larry Brooks | - | - | - | - | - |
| Mike Brown | - | - | AMA 125cc - 2001 | - | 3 |
| Rick Burgett | - | - | AMA 500cc- 1978 | - | - |
| Jimmy Button | - | - | - | - | - |
| Michael Byrne | - | - | - | - | - |
Read more about this topic: List Of Motocross Riders