| | LCAR | | luxury car |
| | lcd | | liquid crystal display |
| | lcd | | lowest common denominator |
| | LCI | | Labour Cost Index |
| | LCMS | | Liquid Chromatography Mass Spectrometry |
| | LCT | | Luxury Car Tax |
| | LCVP | | Landing Craft, Vehicle and Personnel |
| | LCW | | loud, confident, and wrong |
| | LD | | later dude |
| | LD | | later, dude |
| | LD | | learning disabilities |
| | LD | | legally dumb |
| | LD | | long distance |
| | LDAP | | Lightweight Directory Access Protocol |
| | LDL | | Low-density Lipoprotein cholesterol |
| | LDMS | | landesk management suite |
| | LDMS | | landmark data applications & management solutions |
| | LDMS | | laser desorption mass spectrometry |
| | LDMS | | light defender missile system |
| | LDMS | | linked director movies |
| | LDMS | | local multi-point distribution services |
| | LDMS | | long distance management system |
| | LDP | | Label Distribution Protocol |
| | LDR | | Long Distance Relationship |
| | LDR | | Long-distance relationship |
| | LDTO | | Lets Ditch This One |
| | LDW | | loss damage waiver |
| | LDWPKOL | | Long Deep Wet Passionate Kiss On the Lips |
| | le | | laugh |
| | le | | Law Enforcement |
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