MLM or mlm can be an abbreviation of:
- Mail List Manager
- Marxism-Leninism-Maoism
- Multipurpose Laboratory Module, planned Russian module of the International Space Station
- Multi-level marketing
- Morelia International Airport, IATA airport code MLM
- Military Liaison Missions, an American Cold War unit, in the Group of Soviet Forces, Germany
- Millom railway station, England; National Rail station code MLM
- mlm, a unit for luminous flux, corresponding to 1/1000 lumen
- Movimento de Libertação das Mulheres Portuguese feminist movement
- Medical Logic Module, a program written in the Arden Syntax computer language