SM

SM, Sm, sm, or .sm may refer to:

Organizations

Samarium, a chemical element, symbol Sm
Standard Model, a quantum field theory
Statistical Mechanics
Statute mile, a unit of measure equal to 5280 feet or 1609.344 meters, abbreviation sm
Sm, a type of spiral irregular galaxy, see Magellanic spiral
Sm., a standard author abbreviation for James Edward Smith when citing a botanical name
Service Module
Scientiæ Magister, an academic degree offered by Harvard University and MIT. These degree abbreviations appear to be backwards because they follow the tradition of Latin degree names.
$sm^{-3}$ standard cubic meter, used in atmospheric science for a cubic meter of gas under STP
SkyMapper sky survey

.sm, San Marino top-level Internet domain
Secure Messaging, a method to protect sensitive data
SmartMedia, a flash memory card standard
SM (computer) 'System of Machines', DEC's PDP and VAX compatible computers developed in USSR
SM (plotting), supermongo, an interactive plotting software
Software maintenance, a service provided by a partner organisation or external technician
Set Mode (ANSI), an ANSI X3.64 escape sequence
Status message (instant messaging)
Streaming Multiprocessors, specialized processors for running CUDA Kernels

Citroën SM, an automobile
Shanghai Metro, a metro system serving Shanghai, China
SM Coaches, a bus and coach operating company based in Harlow, Essex, United Kingdom
Spec Miata, a class of racing car
St. Mary's Railroad's reporting mark
Spirit of Manila Airlines, IATA airline code SM
Swedline Express, former IATA airline code SM

Service member, a member of a branch of the military
Soldier's Medal, a military award of the United States Army
Signalman (rank), a former rank of the U.S. Navy
Southern Cross Medal (SM), a South African military award
Sena Medal (SM), a Indian Military Award
Sacrifice Medal (SM), The Sacrifice Medal was created in the context of increased casualties in overseas operations to fulfill the desire of Canadians and the Government to provide formal recognition, through the award of an official medal emanating from the Crown, to those who die as a result of military service or are wounded by hostile action. This honour replaces the Wound Stripe.

Service mark, an unofficial trademark used for services rather than products
- Service mark symbol, designated ℠
Spesmilo, a unit of currency abbreviated Sm

Syringomyelia, a chronic medical condition caused by fluid filled cysts within the spinal cord
Samoan language ISO 639-1 code
Sadomasochism, a gratification from acts involving the infliction or receiving of pain or humiliation
Selective Mutism, an anxiety disorder in which someone is unable to speak in given situations, or to specific people
Self-mutilation
Master of Science, or Scientiæ magister, an academic postgraduate degree
Space Marines (Warhammer 40,000), a fictional army in Warhammer 40,000
Scout Master, the leader of a troop in the Boy Scouts of America
Supplementary Member, a democratic voting system
Stage Management, the practice of organizing and coordinating a theatrical production
Studio manager
Small (disambiguation)
Patient S.M., a patient with bilateral amygdala damage and a lack of fear response