| Acronym | Definition |
|---|
| SSR | Simple Sequence Repeat (molecular biology) |
| SSR | Security Sector Reform |
| SSR | Soviet Socialist Republic |
| SSR | Solid State Relay |
| SSR | Secondary Surveillance Radar |
| SSR | Solid State Recorder |
| SSR | Small Screen Rendering (Opera browser on small screen devices) |
| SSR | Sustained Silent Reading |
| SSR | Symposium on Software Reusability (ACM symposium) |
| SSR | Society for the Study of Reproduction |
| SSR | Société Suisse de Radiodiffusion (French) |
| SSR | Super Sport Roadster (Chevrolet) |
| SSR | School of Sound Recording |
| SSR | Stock Status Report |
| SSR | Special Service Request (airlines) |
| SSR | Silent Sustained Reading |
| SSR | SmartSwitch Router (Cabletron) |
| SSR | Schedule Status Report |
| SSR | Software Specification Review |
| SSR | Scalable Sampling Rate (audio coding) |
| SSR | School Science Review (UK journal of the Association for Science Education) |
| SSR | Single Sequence Repeat |
| SSR | Society of Skeletal Radiology |
| SSR | Speed Star Racing |
| SSR | Search and Rescue Region |
| SSR | Step Step Revolution |
| SSR | Surface Search Radar |
| SSR | Slow-Strain Rate (test) |
| SSR | Symantec Security Response |
| SSR | Small Ships Register |
| SSR | Slope Stability Radar |
| SSR | Service Sales Representative |
| SSR | Sociology and Social Research |
| SSR | Sum of Squares due to Regression |
| SSR | Specific Sentence Report (UK criminal courts) |
| SSR | Standard Statistical Region |
| SSR | Selective Service Registration |
| SSR | Supply Support Request |
| SSR | System Status Register |
| SSR | Supplemental Security Income Record (Social Security Administration) |
| SSR | Stackable Switch Router (Avici) |
| SSR | Special Security Representative |
| SSR | Secondary Sex Ratio (births ratio) |
| SSR | Static Shift Register (electronics, logical devices) |
| SSR | Super Steep Retrograde |
| SSR | Side-mode Suppression Ratio (SONET) |
| SSR | Successive Survivable Routing (IEEE) |
| SSR | Solid State Radar |
| SSR | S.S. Rajendran (actor) |
| SSR | Stolen Sharpie Revolution (web zine) |
| SSR | System Service Representative |
| SSR | Site Survey Report |
| SSR | Sales and Service Representative |
| SSR | Superintendencia de Seguros y Reaseguros (Banco Central del Uruguay) |
| SSR | System Specification Review |
| SSR | Sit Down Shut Up and Read |
| SSR | Satellite System Receiver |
| SSR | Seven Star Reaf (anime) |
| SSR | Sum of the Squared Residual |
| SSR | SACEUR Strategic Reserve |
| SSR | Spin-Stabilized Rocket |
| SSR | Specification Status Report |
| SSR | Scottish Society of Rehabilitation |
| SSR | Site Suitability Report |
| SSR | System Status Review |
| SSR | Secondary System Relief |
| SSR | Ship(s) Selected Record(s) |
| SSR | Security Survey Report |
| SSR | Submarine Radar Picket |
| SSR | Switching Series Regulator |
| SSR | Sigma Sigma Rho (sorority) |
| SSR | System Summary Report |
| SSR | Secondary Supply Route |
| SSR | Single Service Responsibility (claims) |
| SSR | Secure Storage Room |
| SSR | Semiannual Revision |
| SSR | Software Status Review |
| SSR | Special Support & Reconnaisance (Danish military) |
| SSR | Spacely's Sprocket Rockets (amusement park ride) |
| SSR | Service Specific Resource |
| SSR | Series Storage Router (Cisco) |
| SSR | Switch Systems Requirements (Sprint) |
| SSR | Secondary State Road/Route |
| SSR | System Supportability Review |
| SSR | Supply Services Requirement |
| SSR | Segment Size Ratio |
| SSR | Separations Summary Registers (Telcordia) |
| SSR | Subsystem Summary Report |
| SSR | Supplier Selection Record |
| SSR | Student Shared Resource |
| SSR | Site Survey and Recommendation |
| SSR | Sublime Soul Radio |
| SSR | Standard Service Revolver (military or law enforcement firearm) |