SR
Sr or Sr. is an abbreviation for:
- Strontium , chemical element
- Strouhal number , fluid mechanics
- Soror , (religious) sister
- Señor , Spanish for "Lord"
sr is an abbreviation for:
- Serbian language , according to ISO 639-1
- Steradian , SI unit for the solid angle
- .sr , top-level domain of Suriname
- Senior as a suffix, see suffix #Senior
S R is an abbreviation for:
- radical substitution , reaction mechanism of organic chemistry
SR stands as an abbreviation for:
- SR (programming language)
- Saarland radio
- Sarcoplasmic reticulum , cell organelle
- Scharfreiterring underground station in Nuremberg
- Saudi riyal , the currency in Saudi Arabia
- Seychelles rupee , the official currency of the Republic of the Seychelles
- Shake Reduction, device for optical image stabilization in digital cameras
- Simson roller, see Simson (Enterprise) # 1945-1990
- Sinus rhythm , the regular human heartbeat
- Southern Railway (Great Britain) , former railway company
- Strada regional , road marking in Italy
- Suriname , country code according to ISO 3166-1
- Sustained release, slowed release of a drug, see retard
- Sveriges Radio , public radio operator in Sweden
- Swissair , former Swiss airline, as ICAO code
- Systematic Collection of Laws - Systematic Collection of Federal Law , Switzerland
License Plate:
- District of Straubing-Bogen , Germany
- Steyr in Austria
- Free Community Consortium Syracuse in Italy
- Strumica (city) , Macedonia
- Śląskie-Rybnik in Poland for the independent city of Rybnik
- Saranda District in Albania (to be discontinued)
- Schwarzburg-Rudolstadt , a principality in Thuringia that existed until 1920
S & R stands for:
- S&R Sportscars , a former British car manufacturer
