| Abbreviation | Definition |
|---|---|
| SNUR | Secret Nation United Republic |
| SOEW | Sunshine on Eagles Wings (website) |
| SOFU | Stack Overflow, Server Fault ,Super User |
| SOIBC | Start Online Internet Business Cheap (website) |
| SOMIA | Social Media |
| SOMIIBO | Social Media Bot |
| SOTD | Soup Of The Day |
| SPG | Supreme Pupils Government |
| SR | Song Request |
| SSG | Seven Super Girls |
| SSO | Single Sign On |
| SSO | Single Sign-On |
| SSP | Special Some Pony |
| ST | Scratch Team |
| STC-O | Sonic the Comic - Online |
| STFO | ROBLOX game genre that stands for "Steal Time From Others" |
| SUBS | Subscribers |
| SUD | Submission of Undetected Done |
| Supermatech | Super Marawi Technology |
| SWLD | ShortWave Listeners Delight |