| Acronym | Definition |
|---|
| SSN➣Social Security Number |
| SSN➣Attack Submarine (Nuclear Propulsion) |
| SSN➣Servizio Sanitario Nazionale (Italian Health Service) |
| SSN➣Simultaneous Switching Noise |
| SSN➣Silver Spring Networks (Redwood City, CA) |
| SSN➣Subsystem Number (SS7) |
| SSN➣Subsystem Number |
| SSN➣Session Service |
| SSN➣Segment Sequence Number |
| SSN➣Storage System Number |
| SSN➣Smoothed Sunspot Number |
| SSN➣Space Surveillance Network |
| SSN➣Social Safety Net |
| SSN➣Social Services Network (Canada) |
| SSN➣Standard Shipping Note (trade) |
| SSN➣Senior Secured Note (finance) |
| SSN➣Soul of the South Network |
| SSN➣Super Sports Network (German TV) |
| SSN➣SafeSeaNet (vessel traffic monitoring and information system) |
| SSN➣Social Solidarity Network (Ireland) |
| SSN➣Ship, Submersible, Nuclear |
| SSN➣Standard Study Number |
| SSN➣Secure Server Network |
| SSN➣Switched Service Network |
| SSN➣Suprasternal Notch (anatomy) |
| SSN➣Station Serial Number |
| SSN➣Submersible Ship Nuclear |
| SSN➣Solución Salina Normal (Spanish) |
| SSN➣Silicon Serial Number |
| SSN➣Swiss Society for Nutrition (Switzerland) |
| SSN➣Superior Salivary Nucleus (facial nerve nucleus) |
| SSN➣Soldier Support Network |
| SSN➣Sub-Surface Navigation |
| SSN➣Specification Serial Number |
| SSN➣Synchronous Sequential Network |
| SSN➣Segment Serial Number |
| SSN➣System Sequence Number |
| SSN➣Swept Spot Noise |
| SSN➣Sprint Service Node |
| SSN➣Streaming Sports Network, LLC (Ottawa, Canada) |
| SSN➣Sense Selection Network (natural language processing) |
| SSN➣System Study Number |
| SSN➣Subscriber Sequence Number |