| LHD |
Laboratory of Host Defenses (merged into LCIM) |
| LHI |
Leading Health Indicators |
| LHP |
National Landslide Hazards Program (older link archive) |
| LI |
Laboratory of Immunology (changed to LISB) |
| LID |
Laboratory of Infectious Diseases |
| LIG |
Laboratory of Immunogenetics |
| LIHEAP |
Low Income Home Energy Assistance Program |
| LIHTC |
Low-Income Housing Tax Credit |
| LINCS |
Literacy Information and Communication System |
| LIONS |
Legal Information Office Network System |
| LIP |
Livestock Indemnity Program |
| LIR |
Laboratory of Immunoregulation |
| LISB |
Laboratory of Immune System Biology |
| LISD |
NOAA Library and Information Services (changed to NCRL) |
| LIV |
Legislative Indexing Vocabulary (discontinued) |
| LLIS |
Lessons Learned Information Sharing (website discontinued; content migrated into HSDL) |
| LLNL |
Lawrence Livermore National Laboratory |
| LLQR |
Lessons Learned Quarterly Report |
| LLSIL |
Lower Living Standard Income Level |
| LM |
Office of Legacy Management |
| LMAC |
Livermore Microarray Center (unable to verify 11/16) |
| LMBP |
Laboratory Medicine Best Practices (older link archive; archive2) |
| LMD |
Logistics Management Directorate |
| LMI |
Laboratory of Molecular Immunology |
| LMIV |
Laboratory of Malaria Immunology and Vaccinology (older link archive) |
| LMM |
Laboratory of Molecular Microbiology |
| LMOP |
Landfill Methane Outreach Program |
| LMV-ILM |
Lower Mississippi Valley Integrated Landscape Science and Monitoring (unable to verify 10/18) |
| LMVR |
Laboratory of Malaria and Vector Research (older link archive) |
| LNM |
Local Notice to Mariners |
| LOB |
Laboratory Operations Board |