LM
- 1M (disambiguation)
- 24 Hours of Le Mans
- ALM Antillean Airlines
- Aircraft maintenance checks
- Apollo Lunar Module
- County Leitrim
- IM (disambiguation)
- IS–LM model
- LAN Manager
- LM (magazine)
- LM Radio
- LM hash
- Lagrange multiplier
- Lamborghini Militaria
- Language model
- Late model
- Le Mans
- Leading monomial
- Lean manufacturing
- Lebesgue measure
- Ledgewood Mall
- Left midfielder
- Legg Mason
- Legion of Merit
- Leiden Manifesto
- Leonard-Merritt mass estimator
- Levenberg–Marquardt algorithm
- Lexus LM
- Liberal Movement (Australia)
- Light meter
- Light microscope
- Limburg-Weilburg
- Linear model
- Linux Mint
- Liptovský Mikuláš
- List of LM-series integrated circuits
- Listeria monocytogenes
- Little Mix
- Living Marxism
- Livingston Energy Flight
- Local Motors
- Lockheed Martin
- Loganair
- London Midland
- Long metre
- Long mode
- Lourenço Marques
- Lower Mainland
- Lower Manhattan
- Lower Merion High School
- Lumen (unit)
- Maltese lira
- National Semiconductor
- Unicode