| Abbreviation | Definition |
|---|---|
| SSJB | Society of St John Bosco |
| SSMB | Singapore Society for Microbiology and Biotechnology |
| SSP | Sierra Service Project |
| SSP | Society for Scholarly Publishing |
| SSPA | Service & Support Professionals Association |
| SSPA | Spirit Society of Pennsylvania |
| SSPC | Society for the Study of Peace and Conflict |
| SSPD | Society for Stimulus Properties of Drugs |
| SSPD | Southeastern Society of Pediatric Dentistry |
| SSPHS | Society for Spanish and Portuguese Historical Studies |
| SSPP | Society for Service Professionals in Printing |
| SSPP | Southern Society for Philosophy and Psychology |
| SSPR | Southern Society for Pediatric Research |
| SSRF | Spiritual Science Research Foundation |
| SSS | Sri Sathya Sai |
| SSSBKSansthan | Sant Suryanand Sambodhi Buddhatva Kutumbakam Sansthan |
| SSSD | Syria Social Society for Development |
| SSTAR | Stanley Street Treatment and Resources |
| SSTG | Shawky Salem Training Grant |
| SSTOP | Students Stopping the Trafficing of People |