| Abbreviation | Definition |
|---|---|
| LTSC | Libertyville Township Soccer Complex |
| LTSC | Lyons Township Soccer Club |
| LWF | Left Wing Forward |
| LYSA | Lenoir Youth Soccer Association |
| LYVYSA | Lower Yakima Valley Youth Soccer Association (Washington state) |
| MAPS | Mid-Atlantic Premier Soccer |
| MASC | Mid-American Soccer Classic |
| MASL | Major Arena Soccer League |
| MASL | Metrolina Adult Soccer League |
| MASL | Mid Atlantic Soccer League |
| MASL | Mid-Atlantic Soccer League |
| MASL | Minnesota Amateur Soccer League |
| MCSA | Montgomery County Soccer Association |
| MCSC | Marion County Soccer Club |
| MCSL | Miller Creek Soccer League |
| MCSL | Morgan County Soccer League |
| MCSL | Muslim Community Soccer League |
| MCSSA | Morris County Senior Soccer Association |
| MDSA | Mount Diablo Soccer Association |
| MDSL | Mason Dixon Soccer League |