| Language Proficiency Assessment Committee | Academic & Science |
| Library Penalties Appeal Committee | Academic & Science |
| Laser Pacific Media Corporation | Business |
| Liquid Pipeline Advisory Committee | Business |
| Limited Partner Advisory Committee | Business |
| Laketran Paratransit Advisory Committee | Business |
| LaSalle Promotional Advisory Committee | Business |
| Legal Profession Assistance Conference | Community |
| Laguardia Performing Arts Center | Community |
| Lang Performing Arts Center | Community |
| Lauderhill Performing Arts Center | Community |
| Lancaster Performing Arts Center | Community |
| Law Placement Association of Cleveland | Community |
| Lincoln Park Alano Club | Community |
| Locust Performing Arts Center | Community |
| LaRouche Political Action Committee | Community |
| Lossless Predictive Audio Compression | General |
| London Planck Analysis Centre | General |
| Listed Product Accreditation Course | General |
| Listed Products Accreditation Course | General |
| Lossless Parallel Adaptive Compression | General |
| Las Piedras Amazon Center | General |
| Low Pressure Air Compressor | General |
| Low Phospholipid Associated Cholelithiasis | General |
| Legislative And Policy Affairs Committee | Governmental |
| Local Planning Assistance Center | Governmental |
| Light Pollution Abatement Committee | Governmental |
| London Planning Advisory Committee | Governmental |
| Legal Publications Advisory Committee | Governmental |
| Lakewood Performing Arts Council | Governmental |
| Loper Programming and Activities Council | Governmental |
| Laboratory for Processing of Advanced Composites | Medical |
