| Abbreviation | Definition |
|---|---|
| LABA | Laboratory Animal Breeders Association |
| LACERTA | see NVHT-Lacerta |
| LAK | Letzebuerger Association vun de Klengdeiere-Praktiker (Luxembourg Small Animal Veterinary Association) |
| LANTRA | National Training Organization for the Land Based Industries |
| LASA | Laboratory Animal Science Association |
| LASSA | Licensed Animal Slaughter and Salvage Association |
| LAV | Latvian Association of Veterinarians |
| LAVA | Laboratory Animal Veterinary Association (formerly BLAVA) |
| LAVOA | Local Authority Veterinary Officers' Association (Ireland, obsolete, now part of VI) |
| LAWTE | Laboratory Animal Welfare Training Exchange |
| LB | Large Breed |
| LBDO | Long-billed Dowitcher (bird) |
| LBO | Landguard Bird Observatory |
| LCI | Livestock Conservation Institute |
| L-Cle | Clenbuterol |
| LCV | Laboratoire Central Vétérinaire |
| LD | Lyme Disease |
| LDDC | Livestock Disease Diagnostic Center |
| LEP | Light Everyday Ponies |
| LFG | Live Foal Guarantee |