| Long Tentacle Anemone | Academic & Science |
| Library Technical Assistant | Academic & Science |
| Language Technologies and Applications | Academic & Science |
| Leave Travel Allowance | Accounts and Finance |
| Tzaneen | Airport Code |
| Línea Turística Aereotuy | Business |
| Leslie Taylor Associates, Inc. | Business |
| Llaves Telegraphicas Artisanes | Business |
| L?ea Tur?tica Aereotuy | Business |
| Lost Time Accident | Business |
| Long Term Associate | Business |
| Lender's Technical Advisor | Business |
| Legal Tax Audit | Business |
| Lipoteichoic Acid | Chemistry |
| Louisiana Travel Association | Community |
| Library Trustee Association | Community |
| Land Trust Alliance | Community |
| Lourdes Tuason Arroyo | Community |
| Low Threshhold Applications | Community |
| Learning Through Action | Community |
| Little Theatre of Alexandria | Community |
| Learning Through Animation | Community |
| Learning Through Art | Community |
| Local Travel Authority | Community |
| Lebanese Transparency Association | Community |
| Language and Technology Academy | Computing |
| Long Term Analysis | Computing |
| Landesk Trusted Access | Computing |
| Log and Trace Analyzer | Computing |
| Long Term Archival | Computing |
| Love To Analyze | General |
| Lengthy Term Assessment | General |
| Leakage To Annulus | General |
| Lamborghini Track Academy | General |
| Lingenfelter Trans Am | General |
| Left Turn Assistant | General |
| Left Turn Arrow | General |
| Land Transport Act | General |
| Low Temperature Aftercooling | General |
| Lane Tracing Assist | General |
| London Traffic Act | General |
| Left Turn Ahead | General |
| Le Temple Automobiles | General |
| Light Tilting Arbor | General |
| Latent Transition Analysis | General |
| Legs Trunk And Arms | General |
| Laser Tuning Aid | General |
| Long Term Average | General |
| Lanes Trains and Automobiles | General |
| Lambda Theta Alpha | General |
| Landbased Technicians Accreditation | General |
| Local Technical Assistance | General |
| Lanes Trains Automobiles | General |
| Legs Trunks And Arms | General |
| Legs Trunk Arms | General |
| Linear Track Actuator | General |
| Long Term Archive | General |
| Lymphedema Treatment Act | General |
| Land Transport Authority | Governmental |
| LAMTA | Indian Railway Station |
| Lymphocyte Toxicity Assay | Medical |
| Lymphocyte Transformation Assay | Medical |
| lymphotoxin alpha | Medical |
| Late Term Abortion | Medical |
| large T antigen | Medical |
| Laser Thermal Ablation | Medical |
| Laser Thermal Angioplasty | Medical |
| Laser Trabecular Ablation | Medical |
| lead tetraacetate | Medical |
| Leisure Time Activity | Medical |
| Life-Threatening Asthma | Medical |
| lifetime allowance | Medical |
| Long-Term Adaptation | Medical |
| Long-Term Agreement | Medical |
| Lotus tetragonolobus agglutinin | Medical |
| lung tumor-associated antigen | Medical |
| Local Training Area | Military and Defence |
| Local Training Authority | Military and Defence |
| Lighter Than Air | Military and Defence |
| Long Term Archiving | Networking |
| Low Temperature (oxygen Plasma) Ashing | Physics Related |
| Living Together Arrangement | Real Estate |
| Lower Torso Assembly | Space Science |
| Lawn Tennis Association | Sports |
| Louisiana Tennis Association | Sports |
| Leased Transport Area | Telecommunication |
