MG
- .mg
- Champion Air
- GM (disambiguation)
- Gauss (unit)
- George Jackson (music producer)
- Glossary of music terminology
- JSW MG Motor India
- Level crossings in the United Kingdom
- MG (album)
- MG Cars
- MG Motor
- MG Motors Pakistan
- Machine gun
- Madagascar
- MagicGate
- Magilla Gorilla
- Magnesium
- Major general
- Malagasy language
- Marker gene
- Match Game
- Mathematical Grammar School
- Matt Groening
- Medal for Gallantry
- Mg (magazine)
- Michaelis–Gutmann bodies
- Microgrid
- Milligram
- Minas Gerais
- Mongolia
- Monoglyceride
- Monte Generoso railway
- Motor–generator
- Myasthenia gravis
- Mycoplasma gallisepticum
- Mycoplasma genitalium
- OpenMG
- Outlaw motorcycle club
- Smart grid
- The MG's (album)
- The Perhapanauts
- Tonne
- UG (disambiguation)
- ΜG
- Μg