LMT may stand for:

• Klamath Falls Airport in Klamath Falls, Oregon, the IATA airport code.
• Large Millimeter Telescope, the largest single dish radiotelescope at millimetric and submillimetric wavelenghts.
• Latvian Mobile Telephone (Latvian: Latvijas Mobilais Telefons), the largest mobile phone operator in Latvia.
• Licensed Massage Therapist
• Liquid mirror telescope, a type of telescope that uses a rotating surface of liquid metal as its mirror
• the Lisa McPherson Trust. A group working to expose Scientology founded to honour the dying wish of Lisa McPherson’s mother.
• Local mean time.
• Lockheed Martin’s stock symbol on the New York Stock Exchange ().
• Logistic Model Trees, a method for statistical classification.