SR
- "Sr."
- .sr
- 5.1 surround sound
- A Just Russia
- Cirrus SR20
- Dodge Viper (SR I)
- Gibbs SR
- Lockheed SR-71 Blackbird
- Manx SR
- Nissan SR engine
- Religious sister
- Rockaway Park Shuttle
- SR Corporation
- SR flip-flop circuit
- SR programming language
- SR protein
- SR-25
- Saarländischer Rundfunk
- Sarcoplasmic reticulum
- Saudi riyal
- Science Reporter
- Segment routing
- Senior (disambiguation)
- Serbian language
- Slew rate
- Slot receiver
- Slovak Republic
- Socialist Republic
- Socialist Revolutionary Party
- Sound reinforcement
- Southern Railway (U.S.)
- Southern Railway (UK)
- Southern Railway zone
- Special reconnaissance
- State Route
- Steradian
- Strike rate
- Strontium
- Student Robotics
- Sudurpaschim Royals
- Suriname
- Sustained release
- Sveriges Radio
- Swissair
- Sørvágs Róðrarfelag
- United States Air Force Special Reconnaissance
- West Sulawesi