LM
- LMAO – (i) Laughing My Ass Off (Internet short-hand)
- LMFAO – (i) Laughing My F**king Ass Off (Internet short-hand, electro-hop duo)
- LMB – (i) Lick My Balls
- LMN – (a/i) Lifetime Movie Network
- LMS – (i) London Mathematical Society – London, Midland and Scottish (Railway)
- LMS – (i) Like My Status (Internet short-hand)
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