| L-Cle | Clenbuterol 
| Others |
| L-DOPA | Levodopa
| Others |
| L-HOUR | Launch Hour (The specific hour on C-day at which a deployment operation commences)
| Others |
| L-Hour | Specific Hour On C-Day At Which A Deployment Operation Commences or is to Commence
| Others |
| L-L | Line-to-Line
| Others |
| L-P | Long-Playing
| Others |
| L-P | Low Pressure
| Others |
| L-RERP | Long-Range Effects Research Program
| Others |
| L-TE | Long-Term Evaluation
| Others |
| L. | Lake
| Others |
| l. | lateinisch
| Others |
| L. | Leaf
| Others |
| l. | lies
| Others |
| l. | links
| Others |
| L.A. | Los Angeles
| Others |
| L.A.W.BBS | Legal Access in Washington Bulletin Board System
| Others |
| L.B.S. | Lock Back Safety (patented mechanism for folding knives)
| Others |
| L.E.M. | Laboratory of Economics and Management
| Others |
| L.Mus.,A. | Licentiate in Music, Australia
| Others |
| L.O.H. | Legion of Hono(u)r
| Others |
| L.S. | Legal Seal
| Others |
| L.S.A. | Life-Support Area
| Others |
| L/A | Loan Agreement
| Others |
| L/D | Length to Diameter Ratio
| Others |
| L/D | Length-to-Diameter ratio
| Others |
| L/D | Lift-to-Drag ratio
| Others |
| L/D | Lift/Drag (Ratio)
| Others |
| L/DAY | Liters Per Day
| Others |
| L/G | Letter of Guarantee
| Others |
| L/H | Liters per Hour
| Others |
| L/H | Local Horizontal
| Others |
| L/L | Land Line
| Others |
| L/L | Low Level
| Others |
| L/M | Land/Mines
| Others |
| L/M | Last minute
| Others |
| L/M | Left Message
| Others |
| L/MIN | Liters Per Minute
| Others |
| L/O | Lift-Off
| Others |
| L/S | Landing Site
| Others |
| L/S | Liters Per Second
| Others |
| L/S | Load System
| Others |
| L/S RATIO | Lecithin/ Sphingomyelin Ratio
| Others |
| L/T | Load Test
| Others |
| L1 | Level 1 cache
| Others |
| L1 | Lousy One
| Others |
| L1 - L5 | Lumbar vertebrae 1 - 5 (spine eg. L1 = 1st lumbar vertebra)
| Others |
| L10N | Localization
| Others |
| L1A | Level One Accept
| Others |
| L1B | Level One Buffer
| Others |
| L1M | Late One Minute
| Others |