SMR

SMR may mean:

Countries

• San Marino

Railways

• Saltwood Miniature Railway, Kent, England, United Kingdom
• Snowdon Mountain Railway, Wales, united Kingdom
• South Maitland Railway, New South Wales, Australia

Science and Technology

• Skeletal Muscle Relaxant
• Self-Myofascial Release
• Sensorimotor rhythm
• Specialized Mobile Radio
• Sphere Mounted Reflector (SMR), for Laser Trackers
• Square matricial representation (SMR) in Mathematic, see Polynomial SOS
• Standardized Mortality Ratio
• Steam methane reforming, a method of producing hydrogen
• Surface movement radar, used on airports to observe taxiing aircraft
• Single Mixed Refrigerant
• Symbolic Music Representation, used in MPEG-4 Part 3 and defined in MPEG-4 Part 23

Other

• Somatosensory & Motor Research, a medical journal.
• Schweitzer Mountain ski resort in Idaho, USA
• Seattle Mountain Rescue volunteer mountain rescue unit based in Seattle, WA
• Sexual Maturity Rating
• Shinto Muso-ryu, Japanese martial art using the quarterstaff
• Sid Meier's Railroads! a model railroading video game
• Sites and Monuments Record of archaeological sites in the United Kingdom
• MIT Sloan Management Review journal
• Social Media Resurces/Researches
• Strikeforce Mining and Resources, the fifth-largest primary molybdenum mine producer in the world
• Sunday Morning Ride a Marin County California weekly motorcycle ride