SEM
- 2-(Trimethylsilyl)ethoxymethyl chloride
- Caterpillar Inc.
- Craig Field (Alabama)
- Dassault-Breguet Super Étendard
- Elise Sem
- ExoMars
- Freestar experiment
- Ingebjørg Dahl Sem
- Ingebjørg Sem
- John Sem
- Kazachok
- New Austrian tunnelling method
- Niels Arntzen Sem
- Oberheim SEM
- S.E.M. Group
- Samsung Electro-Mechanics
- Scanning electron microscope
- School of Science and Engineering
- Search engine marketing
- Security event manager
- Self-evaluation maintenance theory
- Sem (artist)
- Sem (given name)
- Sem Municipality
- Sem, Ariège
- Sem, Norway
- Shem
- Simultaneous equations model
- Single Electricity Market
- Sistema Eléctrico de Magallanes
- Society for Ethnomusicology
- Society for Experimental Mechanics
- Sports medicine
- Standard error
- State Secretariat for Migration (Switzerland)
- Steam Engine Makers' Society
- Stock Exchange of Mauritius
- Strategic energy management
- Strategic enrollment management
- Structural equation modeling
- Suy Sem
- Swedish Evangelical Mission
- The School of Ecclesiastic Music