Electronics/Technology

• Sony's Super Sonic Wave Motor for focusing for select high-end lenses (G series and Carl Zeiss Vario-Sonnar) in their dSLR Alpha system.

Transportation

• Honda SSM concept car in introduced at the 1995 Tokyo Motor Show.

Societies

• Society of the Sacred Mission (SSM)

• Society of Saint Michael (SSM), a priestly fraternity of Anglo-Catholic bishops, priests, and deacons.

• Society for Social Medicine, a British society for researchers in social, community and public health

• Socialistický svaz mládeže (Socialist Union of Youth), the Czechoslovakian Communist youth organisation

• Federation of Trade Unions of Macedonia

Organisations

• Sault Ste. Marie, Ontario

• Sault Ste. Marie, Michigan

• Shattuck-Saint Mary's, a boarding school in Faribault, MN.

Titles

• Squadron Sergeant Major, a warrant officer appointment in the British and some Commonwealth armies

• Staff Sergeant Major, a warrant officer appointment in the British and some Commonwealth armies

Scientific terms

• Standard Solar Model, the best current physical model of the sun

• Semi-Solid Metal Casting, a process in the production of aluminium or magnesium parts

• Serum Supplemented Medium, a type of growth medium

• Soft systems methodology, an approach to organisational process modelling

• Startup, shutdowns, and malfunctions, a non-continuous mode of operating an industrial facility, in which the control of pollutants may be lessened (per United States Environmental Protection Agency‎ regulations)

• Superficial spreading melanoma

• Surface-to-surface missile, a tactical weapon used in warfare

• Scanning SQUID microscope, a magnetic current imaging system

Specific or proprietary abbreviations

• Storage Services Module, an intelligent software residing on storage network switches to provide various services (e.g. storage virtualization)

• Source-specific multicast, a method of delivering multicast packets

• Special study modules, now known as student selected components, optional elements in the syllabus of UK medical schools

• SummerSlam, an annual professional wrestling pay-per-view event

• Same-sex marriage

• System Safety Monitor, a HIPS software or behaviour blocker developed by System Safety Ltd for the Windows platform

• Synchronization Status Message, a message byte used in SONET/SDH systems, and carried in some PDH signals, used to indicate if the signal is usable for timing

• Standard Shadow Map

• SSM (band), a garage-punk band from Detroit, Michigan