| Abbreviation | Definition |
|---|---|
| LAGB | Linguistics Association of Great Britain |
| LAHAS | Latrobe Area Hospital Aid Society |
| LAI | Cumann Leabharlann na hÉireann |
| LAI | Cumann Leabharlann na hireann |
| LAI | Library Association of Ireland |
| LAMAS | London and Middlesex Archaeological Society |
| LAMPS | Late Antique and Medieval Postgraduate Society |
| LAOS | Leeds Amateur Operatic Society |
| LAOTI | Los Angeles ORT (Obshestvo Remeslenofo zemledelcheskofo Truda; Russian: Society for Trades and Agricultural Labour) Technical Institute |
| LAPES | Latin American Philosophy of Education Society |
| LAPES | Los Angeles Police Emerald Society |
| LAPS | Laredo Animal Protective Society |
| LAPS | Large Animal Protection Society |
| LAPS | Lycoming Animal Protection Society |
| LARS | Lesotho Amateur Radio Society |
| LARS | Los Angeles Radiological Society |
| LAS | Latvian Academy of Sciences |
| LAS | Latvian Architects Society |
| LAS | Latvijas Arhitektu Savien+ba |
| LAS | Latvijas Arhitektu Savienba |