SMR may refer to:
Organisations
Seattle Mountain Rescue, American non-profit Solomon Mahlangu Regiment of the South African Army Swedish Resistance Movement, a neo-Nazi political party
Places San Marino (by ISO 3166-1, IOC and FIFA country code) Rimba Secondary School (), Brunei Simón Bolívar International Airport (Colombia) (by IATA code) Tell Kazel (Ancient Egyptian: Smr), archaeological site in Syria
Railways Smethwick Rolfe Street railway station (station code: SMR), West Midlands, England Snowdon Mountain Railway, Gwynedd, Wales South Maitland Railway, NSW, Australia Stapleford Miniature Railway, Melton Mowbray, England
Biology and medicine Sensorimotor rhythm, a brain wave rhythm Standardized mortality ratio, in epidemiology Suppressed mite reproduction, a trait in honey bees, see varroa sensitive hygiene
Computing Shingled magnetic recording, a hard disk storage method State machine replication in distributed computing Symbolic Music Representation in MPEG-4 Part 3
Science and technology Small modular reactor, a type of nuclear reactor Specialized Mobile Radio Square matricial representation of polynomials Steam methane reforming, for producing hydrogen Surface movement radar, used by airports Slope mass rating, of rock mass Spherically Mounted Retroreflector, a laser tracker target
Other uses Shintō Musō-ryū, Japanese martial art Sites and monuments record, of archaeological sites in the UK Sprint medley relay, a track and field event