MMR
- DNA mismatch repair
- MMR vaccine
- Manmad Junction railway station
- Marine Mammal Regulations
- Mass miniature radiography
- Master of Marketing Research
- Matchmaking rating
- Maternal mortality rate
- Maternal mortality ratio
- Mean-motion resonance
- Meet-me room
- Mesozoic Marine Revolution
- Middle Gorge railway station
- Modified Modified READ
- Mumbai Metropolitan Region
- Myanmar
- Nuclear microreactor