LMB

LMB is the abbreviation of:

Largemouth bass (Micropterus salmoides)
La Martiniere College for Boys, Kolkata
Laboratory of Molecular Biology, a research institute in Cambridge, England
Latvian Mathematical Society (Latvian: {{lang|lv|Latvijas Matemātikas Biedrība}})
Left Mouse Button on a computer mouse
Leptomycin B, an inhibitor of protein export from the cell nucleus
Liga Mexicana de Beisbol, the Mexican Baseball League
Line Mode Browser, the first multi-platform web browser
Lois McMaster Bujold, science fiction and fantasy author