| Acronyms | Meaning / Significance | Source |
| L | Layer | |
| L&R | logistics and resources division | |
| LA | Legal Advicer | |
| LACS | LANDCENT Area Communications System | |
| LAFPLAD | land forces planning document | |
| LAM | line access module | |
| LAN | local area network | |
| LANDCENT | Land Forces Central Europe | |
| LANL | Los Alamos national laboratory | |
| LAP | line access protocol | |
| LAP B | Link Access Procedures, Version B | |
| LAP D | Link Access Procedures, Version D | |
| LAPB | link access protocol B | |
| LAS | Local Area Subsystem | |
| LBU | land based user | |
| LCC | Life Cycle Cost | |
| LCC | logistic coordination centre | |
| LCD | Liquid Crystal Display | |
| LCE | Latest Cost Estimate | |
| LCF | life cycle framework | consultancy work on life cycles |
| LCM | life cycle model | consultancy work on life cycles |
| LCO | local control organization | OCO |
| LCP | Leased Circuit Programme | |
| LCPM | life cycle process model | consultancy work on life cycles |
| LCZ | land combat zone | |
| LD | Lateral Dispersal | |
| LDR | low data rate | |
| LEB | link expansion box | |
| LEWWG | land EW working group | |
| LH | Line Hunting | |
| LISA | link message standard in support of ACCS | |
| LIU | line indicator unit | |
| LIVE OAK | SATCOM between SHAPE and Berlin | |
| LIZ | Lage- und Informationszentrum | |
| LLC | Logical Link Control | |
| LLP | leased long line programme | |
| LLP | link layer protocol | STC CSNI final report 22/9/95 |
| LLRS | low level radar surveillance | |
| LLTR | Low Level Transit Route | |
| LMC | limited management centre | |
| LME | Local Management Equipment | |
| LMI | logistics management institute | weekly minutes 6-12-95 |
| LOA | Letter of Acceptance | |
| LOB | Logistics Order of Battle | |
| LOC | limited operational capability | ACE ACCIS core cap specs |
| LOC | lines of communication | |
| LOC | logistics operations cell | |
| LOCE | Limited Operational Capability Europe | |
| LOCE | Linked Operations Center Europe | |
| LOCE | linked ops-intel centres Europe | Ex Strong Resolve 95 |
| LOCSTAT | Lines of Communication Status | |
| LOH | Light Observation Helicopter | |
| LOI | Letter of Instruction | |
| LOI | letter of intent | |
| LORAD | Long Range Air Defense | |
| LORAN | long range air navigation | |
| LOS | line of sight | |
| LOTOS | Language Of Temporal Ordering of Specification | |
| LPC | linear predictive code | |
| LPI | Low Probability of Intercept | |
| LRCC | logistic readiness coordination centre | |
| LRNZ | Luftraumnutzungszentrale | |
| LRO | Luftraumordnung | |
| LRR | Long Range Radar | |
| LRRP | long-range recce patrol | |
| LRU | Lowest Replaceable Unit | |
| LS | LANDSOUTH | |
| LS | Local Subscriber | |
| LSB | Least Significant Bit | |
| LSC | logistic support command | |
| LSC | Logistic Support Concept | |
| LSD | large screen display | |
| LSDT | low speed data terminal | |
| LSE | LANDSOUTHEAST | |
| LSE | Local Security Environment | |
| LSE | logistic staff element | |
| LSOF | Land Status of Forces (User Function) | |
| LSP | Local Sytem Process | |
| LSP | logistics support plan | |
| LTDP | long-term defense programme | |
| LTDP | Long Term Defense Plan | ATCCIS Config Management Plan |
| LTFF | long-term financial forecast | |
| LTFP | long-term finacial planning | |
| LTIP | Long Term Infrastructure Plan | |
| LTPA | long-term planning area | |
| LTPG | long-term planning guideline | |
| LTR | Long Term Requirement | |
| LTSS | long term scientific study | CAX |
| LTU | light terminating unit | |
| LTU | Line Terminator Unit | |
| LVA | Large Vertical Array | |
| LWG | land working group | ATCA database |