| Abbreviation | Definition |
|---|---|
| LSA | Legal Sustainability Alliance |
| LSA | Lightning Safety Alliance |
| LSA | Living Streets Alliance |
| LSA | Lone Star Alliance |
| LSEA | Logan Square Ecumenical Alliance |
| LSLA | Libertarian State Leadership Alliance |
| LSRA | Lake States Resource Alliance |
| LSSA | Lone Star Soccer Alliance |
| LSYFA | Lone Star Youth Football Alliance |
| LTAA | Light Truck Accessory Alliance |
| LTSA | Lambeth Teaching School Alliance |
| LTSA | Lincolnshire Teaching School Alliance |
| LVDA | Las Vegas Dancers Alliance |
| LWA | Letter Writers Alliance |
| LYLA | Live Your Language Alliance |
| LZA | Labor Zionist Alliance |
| MAA | Marvel Avengers Alliance |
| MAAC | Multi Agency Alliance For Children |
| MAAD | Minority Alliance of Anti Discrimination |
| MAAHSA | Maternal And Adolescent Health and Safety Alliance |