| Abbreviation | Definition |
|---|---|
| SSAP | Source Service Access Protocol |
| SSC | Secured Smartcard Channel |
| SSC | Structure Server Component |
| SSD | Start of Stream Delimiter |
| SSDD | System/Sub-system Design Description (MIL-STD-498) |
| SSE | Streaming SIMD Extension |
| SSF | Standard Storage Format |
| SSHFS | Secure SHell FileSystem |
| SSI | Satellite to Streaming Initiative |
| SSI | Server Side Include |
| SSI | Server System Infrastructure |
| SSI | System Services Interface |
| SSID | Service Set Identifier (802.11) |
| SSLB | Symmetric Server Load Balancing |
| SSM | Service Session Manager |
| SSM | Super Simple Multicast |
| SSMP | Simple Sub-system Management Proxy protocol |
| SSN | Secure Server Network |
| SSN | Space Surveilance Network |
| SSoH | Save State of Health |