SMM may refer to:
- Scattering-matrix method, a type of solution to cylindrical electromagnetic scattering problems
- Science Museum of Minnesota, an American museum focused on topics in technology, natural history, physical science and mathematics education
- Semporna Airport, IATA code
- Sex Money Murda, a street gang in America
- Simulated Method of Moments, a structural estimation technique in econometrics
- Single Marketing Method
- Single-molecule magnet, a class of metalorganic compounds, that show superparamagnetic behavior below a certain blocking temperature at the molecular scale
- Single-monthly mortality rate
- S-Methylmethionine, a derivative of methionine with the chemical formula +
- Social media marketing, gaining website traffic or attention through social media sites
- Societas Mariae Montfortana (or Saint Montfort Missionaries), an order founded by Louis de Montfort (1673–1716)
- Soft Magnetic Materials Conference, an international conference devoted to all kinds of soft magnetic materials
- Surface Micro Machining
- Solar Maximum Mission, satellite (or SolarMax) was designed to investigate solar phenomena, particularly solar flares. It was launched on February 14, 1980
- St. Mary Magdalene, a church in Toronto, Canada
- Standard Method of Measurement
- Storage Modification Machine, an atomistic abstract computational machine model akin to the Random access machine
- System Management Mode, an operating mode where special separate software is executed in high-privilege mode
- Sendi Mutiara Multimedia
smm may refer to:
- Musasa language ISO 639-3 code
- Shanghai Metals Market, a leading metals information provider in China