LCM may refer to:
- Legislative Consent Motion
- Life Cycle Management, a business term for the maintenance and retirement of products
- Limited constitutional monarchy
- Little Company of Mary
- Liverpool Classical Monthly, an academic journal on classical antiquity
- Long Course Meters (swimming)
- Lymphocytic choriomeningitis, a viral infection carried by rodents
- an abbreviation for "Last Chance Marie" a song by Christian rock band Children 18:3
- the name of a popular treat, akin to Rice Krispies Treats, especially in Australia and New Zealand. ("LCM" does not stand for anything in this case.)
Technology
- the Laboratory Cabin Modules on the Chinese space station
- naval warfare for Landing Craft Mechanized
- Liquid Crystal Monitor, a monitor using a liquid crystal display
- Laser capture microdissection, use of a laser through a microscope to cause selected cells to be isolated and extracted
Math
- accounting for Lower of Cost or Market
- mathematics for least common multiple
- Latent class model, a concept in statistics
Places
- Little Cypress-Mauriceville Consolidated Independent School District, Texas
- London College of Music
- London College of Music Examinations
- London Canal Museum
- London City Mission
- Lander College for Men, a division of Touro College
- Leeds College of Music