SRR
- Design review (U.S. government)
- ISO 639
- Russian Amateur Radio Union
- SRR IPC
- Savannah River Site
- Search and rescue
- Serer language
- Serine racemase
- Shake, Rattle and Roll
- Sierra Blanca Regional Airport
- Socialist Republic of Romania
- Societad Retorumantscha
- Special Reconnaissance Regiment
- Split-ring resonator