| Acronym | Meaning |
 | LLB | Legum Baccalaureus (Latin: Bachelor Of Laws) |
 | LLC | Limited Liability Company |
 | LLGC | Llyfrgell Genedlaethol Cymru (National Library Of Wales) - London Lesbian And Gay Centre |
 | LLLTV | Low-Light Level Television |
 | LLNL | Lawrence Livermore National Laboratory |
 | LLP | Limited Liability Partnership |
 | LLTI | Limiting Long-Term Illness - Long Lead Time Item |
 | LLTR | Low-Level Transit Route |
 | LMAO | Laughing My Ass Off (Internet Short-hand) |
 | LMB | Lick My Balls |
 | LMS | London Mathematical Society - London |
 | LN | Lingala Language (ISO 639-1 Code) - Natural Logarithm |
 | LNB | Low-Noise Block (Satellite Dish) |
 | LNER | London And North Eastern Railway |
 | LNG | Liquefied Natural Gas |
 | LNO | Liaison Officer |
 | LO | Lao Language (ISO 639-1 Code) |
 | LO | Slovakia (FIPS 10-4 Country Code) |
 | LOA | Limit Of Advance |
 | LOC | Level Of Operational Capability - Limited Operational Capability - Lines Of Code - Lines Of Communication - See Entry |
 | LOD | Lines Of Development (UK) |
 | LOD | Limit Of Detection - See Detection Limit |
 | LOFAR | Low Frequency Analysis And Recording |
 | LOGPAC | Logistics Package |
 | LOL | Laughing Out Loud (Internet Short-hand) |
 | LOMEZ | Low Altitude Missile Engagement Zone |
 | LONEOS | Lowell Observatory Near-Earth-Object Search |
 | LOQ | Loquitur (Latin |
 | LORTID | LOng Range Target IDentification |
 | LOS | Line Of Sight |
 | LOSAT | Line-Of-Sight Anti-Tank (missile) |
 | LOTA | Licentiate Of The Orthodontic Technicians Association |
 | LOTIS | Livermore Optical Transient Imaging System |
 | LOTS | Logistics Over-The-Shore |
 | LP | Linkin Park - Linkup Point - Listening Post - Long Playing Record ? Louisiana Pacific (cf. LP Field) |
 | LPC | Linear Predictive Coding |
 | LPD | Landing Platform Dock (Navy Hull Classification) - Low Probability Of Detection |
 | LPG | Liquefied Petroleum Gas (cf. LNG) |
 | LPI | Low Probability Of Intercept |
 | LPS | Landsat Processing System -LipoPolySaccharide |
 | LQ | Palmyra Atoll (FIPS 10-4 Territory Code) |
 | LR | ATGW -Long-Range Anti-Tank Guided Weapon |
 | LR | Lawrencium |
 | LR | Liberia (ISO 3166 Digram) |
 | LRAD | Long Range Acoustic Device (ell-rad) |
 | LRAS3 OR LRAS? | Long Range Advanced Scout Sensor Suite |
 | LRC | Local RTI Component - Logistics Readiness Center |
 | LRD | Liberian Dollar (ISO 4217 Currency Code) |
 | LRF | Laser RangeFinder -Low Readiness Forces |
 | LRGW | Long-Range Guided Weapon |