Miscellaneous
- Em, a common short form of some given names, e.g. Emma, Emily, Emmett, Emmanuel, Emerson
- EM gauge, a variant of 1:76 scale used in model railways
- Emergency management, a discipline that studies dealing with and avoiding risks
- Emerging markets, a nation's social, or business activity in the process of rapid industrialization
- Environmental management, the management of modern human society's interaction with, and impact upon the environment
- ERASMUS Mundus, a students exchange program, the international counterpart of the ERASMUS programme
- Electrician's Mate, a rating in the U.S. Navy and U.S. Coast Guard
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