L
| Name | Seasons | World Championships | National Championships | Races | Wins |
|---|---|---|---|---|---|
| Brad Lackey | 1971-1982 | 500cc- 1982 | AMA 500cc- 1972 | - | 7 |
| Arthur Lampkin | - | - | - | - | 7 |
| Steve Lamson | - | - | AMA 125cc- 1995, 1996 | - | - |
| Grant Langston | 1997–present | 125cc- 2000 | AMA 125cc - 2003 AMA 125 SX East - 2005 AMA SX Lites West - 2006 AMA 250cc- 2007 |
- | 7 |
| Danny LaPorte | 1976-1983 | 250cc- 1982 | AMA 500cc- 1979 | - | 6 |
| Mike LaRocco | 1988-2006 | AMA 250cc- 1994, AMA 500cc- 1993 |
- | - | |
| Jason Lawrence | 2005–present | - | AMA SX Lites West - 2008 | - | - |
| Ron Lechien | 1983-1990 | 1984 Four Stroke World Champion | AMA 125cc- 1985 | - | - |
| Jeff Leisk | - | - | - | - | 3 |
| Victor Leloup | - | - | - | - | 4 |
| Aigar Leok | - | - | - | - | - |
| Tanel Leok | - | - | - | - | - |
| Billy Liles | - | - | - | - | 6 |
| Ove Lundell | 1948-? | - | - | - | 1 |
| Sten Lundin | - | 500cc- 1959, 1961 | - | - | 24 |
| Jeremy Lusk | - | - | - | - | - |
Read more about this topic: List Of Motocross Riders