| Acronym | Definition |
|---|
| MMM | Multimedia Modeling (International Conference) |
| MMM | Maa- ja Metsätalousministeriö (Ministry of Agriculture and Forestry, Finland) |
| MMM | Mesoscale and Microscale Meteorology |
| MMM | Million Marijuana March (aka Global Marijuana March) |
| MMM | Magnetism and Magnetic Materials (annual conference) |
| MMM | Triple M (Australian radio station) |
| MMM | Million Man March (Washington, DC) |
| MMM | Minnesota Mining & Manufacturing (now known simply as 3M; also their stock symbol) |
| MMM | Million Mom March (Washington, DC) |
| MMM | Myelofibrosis with Myeloid Metaplasia |
| MMM | Mauritian Militant Movement |
| MMM | Money Making Machine |
| MMM | MuchMoreMusic (TV channel) |
| MMM | Mobile Media Mode |
| MMM | Make Me Move (Zillow online real estate tool) |
| MMM | Masters in Medical Management (degree) |
| MMM | Mouvement Mondial des Mères (French: World Movement of Mothers; est. 1947) |
| MMM | Musique Multi-Montréal (Montreal, Qubec, Canada) |
| MMM | Member of the Order of Military Merit (Canada) |
| MMM | Movimiento Misionero Mundial (Spanish) |
| MMM | Mean Mister Mustard (song) |
| MMM | Multi-Man Melee (gaming) |
| MMM | Millimicrons |
| MMM | Maintenance & Material Management |
| MMM | Maintenance Management Manual |
| MMM | Musique Municipale de Magenta |
| MMM | Mass Memory Module |
| MMM | Moist Mucous Membranes |
| MMM | Materiel Maintenance Management |
| MMM | Monday Morning Messenger (online newsletter) |
| MMM | MegaMan Matrix (website) |
| MMM | Marine Mammal Medic (British Divers Marine Life Rescue; UK) |
| MMM | Materials Management Manual |
| MMM | Missionaries of Mary Mediatrix |
| MMM | Motor Machinist Mate (USN rating) |
| MMM | MiniMonsta:Melohman |
| MMM | Montreuil Marseille Marrakech (photographer in Marrakech, Morocco) |
| MMM | Multi Mission Missile |
| MMM | Multilevel Moment Method |
| MMM | Mainframe Modem Manager |
| MMM | Médiathèque Musicale Mahler (French: Mahler Multimedia Library) |
| MMM | Medical Materiel Manager |
| MMM | Maintenance Man Minutes |
| MMM | Mode Management Module |
| MMM | Major Math Mistake (Math Magazine) |
| MMM | Mouvement pour un Monde Meilleur (French: Movement for a Better World) |
| MMM | Michael the Maintenance Man (radio personality) |
| MMM | Moon Mineral Mapper |
| MMM | Maintenance Manual Organization & Intermediate Levels (TMINS) |
| MMM | Multiplicity Map Matrix |
| MMM | Mabin Millennium Music (Chicago, IL) |
| MMM | Mountain Maryland Marathon (Cumberland, MD) |
| MMM | Multicultural Marketing and Management (Australia) |
| MMM | Medical Marketing and Media (New York, NY) |
| MMM | Millions More Movement |
| MMM | Muslim Members of the Military (est. 1991) |
| MMM | Master of Management and Manufacturing (degree) |
| MMM | Messner Mountain Museum (Italy) |
| MMM | Malteser Migranten Medizin (German: Maltese Migrant Medicine) |