| Acronym | Definition |
|---|
| MMR | Mumps, Measles, Rubella (vaccine) |
| MMR | Mismatch Repair (DNA) |
| MMR | Maternal Mortality Rate |
| MMR | Massachusetts Military Reservation |
| MMR | Burma (ISO Country code, now Myanmar) |
| MMR | Modified Modified Read |
| MMR | Multi-Mode Receiver |
| MMR | Meet Me Room (point of interconnection in a video/audio conferencing session |
| MMR | Multi Mode Radar |
| MMR | Mass Market Retailers |
| MMR | Master of Marketing Research (University of Georgia) |
| MMR | Master Model Railroader (NMRA) |
| MMR | Movimiento Manuela Ramos (Spanish; Peruvian women's group) |
| MMR | Memory-Mapped Register |
| MMR | Mildly Mentally Retarded (mildly developmentally disabled is preferred) |
| MMR | Moderated Multiple Regression |
| MMR | Money Market Rate |
| MMR | Military Munitions Rule |
| MMR | Merchant Marine Reserve |
| MMR | Marine Mammal Regulations (Federal Fisheries Act; Canada) |
| MMR | Mask-Mounted Regulator (respirator system) |
| MMR | Multi-Mission Radar (Army) |
| MMR | Main Machinery Room |
| MMR | Minimum Military Requirement |
| MMR | Multimode Radar |
| MMR | Metamorphosis Medical Retreats (Vancouver, BC, Canada) |
| MMR | Magnetometric Resistivity |
| MMR | Multi-Mode Radio |
| MMR | Mass Miniature Radiography |
| MMR | Mobile Multi-Hop Relay |
| MMR | Megalocornea-Mental Retardation Syndrome |
| MMR | Maximum Medical Recovery (Workplace Safety and Insurance Act, RSO 1998, Canada) |
| MMR | Mobile Medical Response, Inc. (ambulance service provider) |
| MMR | Mobile Meter Reading (of electricity meters) |
| MMR | Material Master Records |
| MMR | Monthly Management Review |
| MMR | Modular Multiband Radiometer |
| MMR | Mixed Media Router |
| MMR | Master-Master Replication (databases) |
| MMR | Mobilization Material Requirement |
| MMR | Minimum Marginal Return |
| MMR | Minoan-Mycenaean Religion (Bronze Age, Greece) |
| MMR | Man Made Rock (construction) |
| MMR | Multiband Multimode Radio |
| MMR | Marble Mountain Ranch (Somes Bar, CA) |
| MMR | Mission Requirements Review |
| MMR | Multimode Radiometer |
| MMR | Multimission Receiver |
| MMR | Maintenance Management Review |
| MMR | Management Milestone Record |
| MMR | Mediabase Music Research |
| MMR | Mobile Mission Recognition |
| MMR | Manpower Mobilization Request |