| Acronym | Definition |
|---|
| SSSO➣Specialized Satellite Services Operator |
| SSSO➣Secure Single Sign on |
| SSSO➣Single Switched Socket Outlet (electricity) |
| SSSO➣Secure Single Sign-On |
| SSSO➣Stay Strong, Starve On |
| SSSO➣St Saviours and St Olaves (UK school/church) |
| SSSO➣Standard Systems Support Office |
| SSSO➣Sherborne Schools' Symphony Orchestra (UK) |
| SSSO➣Specialized Surplus Sales Office |
| SSSO➣Same Source, Same Output |
| SSSO➣same-sex sexual orientation |