SR

SR and related terms may refer to:

Businesses and organizations

Political organizations

• Socialist-Revolutionary Party, Russia, 1902-1940
• A Just Russia (Spravedlivaya Rossiya), a political party, formed in 2006

Transport companies

• Southern Railway (UK)
• Southern Railway (U.S.)
• Swissair (IATA airline code SR)
• Southern Railway zone
• SR Corporation

Other businesses and organizations

• Sørvágs Róðrarfelag, a Faroese rowing association
• Saarländischer Rundfunk, a German broadcaster
• Sveriges Radio, a Swedish broadcaster

Honorifics

• Senior, a generational title suffix to a man's name
• Señor, a Spanish honorific prefix, equivalent to Mr. in English
• Sister, in Catholicism

Places

• Slovakia, officially the Slovak Republic (Template:Lang-sk)
• Socialist Republic as in USSR, ASSR, RSFSR, etc.
• Suriname (ISO 3166-1 country code SR)
  • .sr, Suriname's Internet top-level domain
• West Sulawesi, Indonesia (ISO 3166-2:ID province code SR)

Science and technology

Biology and medicine

• SR protein, involved in RNA splicing
• Sarcoplasmic reticulum, a structure found within muscle cells
• Sustained release medicine

Computing and electronics

• SR flip-flop circuit, an electronic logic device
• SR programming language
• Segment routing, a form of computer networking
• Slew rate, the maximum rate of change of electrical signals
• Sound reinforcement system, making sounds louder
• Student Robotics, a robot-building competition

Transport

• Nissan SR engine
• Manx SR and SR2, 1970 US kit cars
• Lockheed SR-71 Blackbird
• Cirrus SR20 and SR22
• State Route

Other uses in science and technology

• Science Reporter, a magazine
• Special relativity, a theory in physics
• Steradian, the SI unit of solid angle
• Strontium, symbol Sr, a chemical element

Other uses

• Shire Reckoning, the Shire calendar used by the Shire's hobbits in J. R. R. Tolkien's fictional Middle-earth
• Strike rate, a statistic in Cricket
• Saudi riyal, the currency of Saudi Arabia
• Serbian language (ISO-639-1 language code sr)
• Slot receiver, a position in American football
• Special reconnaissance, a military tactic
• Special Reconnaissance (United States Air Force) the special warfare group that conducts weather intelligence and unconventional warfare
• "Sr.", a 2022 film featuring Roberts Downey Jr. and Sr.
• Surround Right (SR) speaker on a 5.1 surround sound setup
• Semi Rimmed in firearms
• SR-25 designated marksman rifle

See also

• Gibbs SR, a brand of toothpaste
• All pages with titles containing Sr
• Senior (disambiguation)
• Saints Row, a video game series