SMT
- Heinrich Hertz Submillimeter Telescope
- SMT (media company)
- Satisfiability modulo theories
- Scottish Mortgage Investment Trust
- Scottish Motor Traction
- Seismic Micro-Technology
- Semarang Tawang railway station
- Senior management
- Shanghai maglev train
- Shin Megami Tensei
- Shrimati
- Simte language
- Simultaneous multithreading
- Social mirror theory
- Society for Music Theory
- St Margarets railway station (Hertfordshire)
- Statistical machine translation
- Sulfamethazine
- Surface-mount technology