SMM may refer to:
Codes Musasa language, ISO 639-3 code Semporna Airport, IATA code
Media and entertainment Super Mario Maker, 2015 video game Social media marketing
Science S-methylmethionine, a derivative of methionine Science Museum of Minnesota Single-molecule magnet Soft Magnetic Materials Conference Solar Maximum Mission or SolarMax, an artificial satellite Stepwise mutation model, of allelic frequencies
Technology Maxwell (microarchitecture), a GPU microarchitecture Scattering-matrix method, to solve Maxwell's equations Storage modification machine, a type of pointer machine in computing System Management Mode, of a x86 CPU
Other uses Church of St. Mary Magdalene (Toronto), a church in Toronto, Canada OSCE Special Monitoring Mission to Ukraine, a civilian observer mission by the Organization for Security and Cooperation in Europe Master of Sacred Music, a degree Sex Money Murda, a street gang in the eastern United States Single monthly mortality, for prepayment of loan Smoldering multiple myeloma, a type of cancer Steenkampskraal Monazite Mine, a mine in South Africa
See also Santa Monica Mountains National Recreation Area, SMMNRA