| Acronym | Definition |
|---|
| SNS | Spallation Neutron Source |
| SNS | Steak N' Shake (stock symbol) |
| SNS | Social Networking Site |
| SNS | Scuola Normale Superiore (di Pisa; Italian) |
| SNS | Strategic National Stockpile (FEMA, US DHS) |
| SNS | Sympathetic Nervous System |
| SNS | Student Network Service |
| SNS | Supplemental Nursing System |
| SNS | Special Needs Systems (IBM) |
| SNS | Southern North Sea |
| SNS | Slip 'n' Slide (band) |
| SNS | Symantec Network Security |
| SNS | Support and Subscription |
| SNS | Servicio Nacional de Salud (National Health Service, Chile) |
| SNS | Sacral Nerve Stimulation |
| SNS | Somatic Nervous System |
| SNS | Saturday Night Special |
| SNS | Shakugan No Shana (Anime) |
| SNS | Slovenskej národnej strany (Slovak National Party, Slovakia) |
| SNS | Secure Network Server |
| SNS | Shop 'n Save (grocery chain) |
| SNS | Shaken, Not Stirred |
| SNS | Satellite Navigation System |
| SNS | School Nutrition Specialist (trade credential) |
| SNS | Stoke Newington School |
| SNS | Sniper Night Sight |
| SNS | Standard Numbering System (UK) |
| SNS | Statesman News Service |
| SNS | Schlumberger Network Solutions |
| SnS | Seikai No Senki (anime) |
| SNS | Stop n Swop (video game) |
| SNS | Scotch 'n' Soda (theatre group) |
| SNS | Sprint North Supply |
| SNS | Sex N' Samlevnad (band) |
| SNS | Special Needs Service |
| SNS | Symmetrical Number System |
| SNS | Space Network System |
| SNS | Space Nursing Society |
| SNS | Sensor Network Server |
| SNS | Specified Numbering Scheme |
| SNS | Site Navigation System |
| SNS | Space Nuclear Systems (US Atomic Energy Commission) |
| SNS | System Network Support |
| SNS | Software Network Server |
| SNS | Senior NAVOCEANO Scientist (US Navy) |
| SNS | Supercomputing Network Subsystem |
| SNS | Supplementary Narrative Statement |
| SNS | Scandinavian Neurological Society |
| SNS | SSIS Network Simulator |
| SNS | Sun Network Services |
| SNS | Service Negotiation Support (Telcordia) |
| SNS | Switched Network Server (Sprint) |