| Abbreviation | Definition |
|---|---|
| LGFT | Let's Go, Forner Tribe |
| LHBC | Little Hawks Baseball Club |
| LLB | Little League Baseball |
| LLBB | Little League BaseBall |
| LLBI | Little League Baseball Incorporated |
| LLBI | Little League Baseball International |
| LLWS | Little League World Series |
| LLYB | Lawrenceburg Lions Youth Baseball |
| LMBA | La Mirada Baseball Association |
| LMBA | Lower Mainland Baseball Association |
| LMYB | Little Miami Youth Baseball |
| LO | Line Out |
| LPBA | Lincoln Park Baseball Academy |
| LSMF | Louisville Slugger Museum & Factory |
| LYB | Laguna Youth Baseball |
| LYB | Lebanon Youth Baseball |
| MABA | Mid Atlantic Baseball Association |
| MABA | Midlothian Amateur Baseball Association |
| MABL | Manatee Adult Baseball League |
| MABL | Maui Adult Baseball League |