| Abbreviation | Definition |
|---|---|
| LMCU | Lake Michigan Credit Union |
| LMCU | Love My Credit Union |
| LMDA | Labour Market Development Agreement |
| LMO | Labour Market Opinion |
| LMRU | Labor-Management Relations Update |
| LMSU | Leeds Met Students' Union |
| LMSU | Lithuanian Multiple Sclerosis Union |
| LMTU | Light Metal Trades Unions |
| LMUCU | Leeds Metropolitan University Christian Union (UK) |
| LNU | Lincolnshire Naturalists' Union |
| LOC | Local Organizing Committee |
| LOW | Laid Off Worker |
| LPGU | Lithuanian Peasant and Green Union |
| LPGU | Lithuanian Peasant and Greens Union |
| LPGU | Lithuanian Peasants and Green Union |
| LPGU | Lithuanian Peasants and Greens Union |
| LPHU | Lebanese Physically Handicapped Union |
| LSDU | Latvian Social Democrat Union |
| LSSU | Lamoille South Supervisory Union |
| LSU | La Sainte Union |