| Acronym | Definition |
|---|
| LAA | Los Angeles Angels (baseball team) |
| LAA | Local Area Agreements (UK) |
| LAA | Left Atrial Appendage |
| LAA | Latin American Association |
| LAA | Light Aircraft Association (UK) |
| LAA | Lifetime Achievement Award |
| LAA | Locally Administered Address |
| LAA | Library Association of Alberta |
| LAA | Laboratory Animal Allergy |
| LAA | Limited Access Authorization |
| LAA | Likely to Adversely Affect |
| LAA | Library Association of Australia |
| LAA | Local Airport Advisory |
| LAA | Local Authority Associations |
| LAA | Left Atrial Abnormality (cardiology) |
| LAA | Lubbock Apartment Association (Lubbock, TX) |
| LAA | Lymphoedema Association of Australia |
| LAA | Lead Agency Attorney |
| LAA | League of Animal Artists (Dallas, GA) |
| LAA | Latin American Antiquity (publication) |
| LAA | Longest Available Agent (Cisco) |
| LAA | L2TP Access Aggregation |
| LAA | Light Anti-Aircraft Artillery |
| LAA | Leicester and Leicestershire Animal Aid Association (UK) |
| LAA | Jamahirya Libyan Arab Airlines (ICAO code) |
| LAA | Load Adaptive Algorithm |
| LAA | Langley Activities Association |
| LAA | Low Activity Aircraft (military flying exercises) |
| LAA | League of Advertising Agencies |
| LAA | Los Angeles Abrasion test (measure of rock toughness) |
| LAA | Louisville Arena Authority, Inc. |
| LAA | Laser Association of America (now the Lasers and Electro-Optics Manufacturers Association) |
| LAA | Leading Agents in Australia |
| LAA | Look At Agency (State Farm Insurance) |
| LAA | Left Atrial Auricle |
| LAA | Lamar, Colorado, USA - Lamar Municipal Airport |
| LAA | L-Aspartic Acid |
| LAA | Legal Administrative Assistant (various companies) |
| LAA | Love Addicts Anonymous |
| LAA | Live Art Archive (UK) |
| LAA | Linear Algebra and its Applications (various schools) |