| Abbreviation | Definition |
|---|---|
| LLDHC | Lost Lake Duck Hunting Club |
| LLM | Lower League Management |
| LLNC | Lobethal Lutheran Netball Club |
| LLSC | Lake Lanier Sailing Club |
| LLWS | Little League World Series |
| LMA | League Manager Association |
| LMBS | Laramie Mountain Bike Series |
| LMHM | Lago Maggiore Half Marathon |
| LMP | Lack Match Practice |
| LMS | Last Man Standing |
| LMSC | Local Masters Swim Committee |
| LMSD | Lower Merion School District |
| LMYB | Little Miami Youth Baseball |
| LNAL | Little North Attleboro League |
| LNF | Look No Feet |
| LO | Line out |
| LOB | Left On Base |
| LOB | Legend Of Blue |
| LOC | Lakeland Orienteering Club |
| LOCOG | London Organising Committee of the Olympic Games |