STM

STM may refer to:

Technology

Scanning tunneling microscope, a non-optical microscope
Signature-tagged mutagenesis, a genetic technique to create random mutants
STMicroelectronics, an Italian-French manufacturer of electronics and semiconductors
STM-1, Synchronous Transport Module, the basic rate of transmission of the SDH ITU-T fiber optic network
Software transactional memory, a method of handling concurrency in multithreaded systems
Stepper motor, a type of electric motor
Canon autofocus lenses that use stepper motor technology which makes them especially quiet
.stm, a filename extension used by:
- Web administration panel, of Belkin routers
- Streaming Media File, in Microsoft Exchange Server
- Scream Tracker, music tracker software

Société de transport de Montréal, the public transport provider in Montreal, Quebec, Canada
Amtrak ticketing code for Stamford Transportation Center, a railway station in Stamford, Connecticut, US
Sea traffic management, a set of systems and procedures to guide and monitor sea traffic in a manner similar to air traffic management
Space traffic management
Strategic Traffic Manager, a Bus Priority application designed to work as part of an intelligent transportation system

Sacrae Theologiae Magister, or Master of Sacred Theology, an academic degree
St. Thomas More College
Short-term memory, the capacity for holding a small amount of information for a short period of time
Small Tactical Munition, a weapon developed by Raytheon
Stabilisation Tracking Mechanism, the mirror instrument of the Stabilisation and Association Process (SAP) for Kosovo
ST"M, a Hebrew acronym meaning a scribe