| Abbreviation | Definition |
|---|---|
| SGE | Swedish Group of Education |
| SGI | Solid Ground, Inc. |
| SGK | Susan G. Komen Breast Cancer Foundation |
| SGMRC | San Gabriel Mountain Regional Conservancies |
| SGR | Scientists for Global Responsibility |
| SGR | Students for Global Responsibility |
| SGSM | St. George Special Ministries |
| SHAF | Save Historic Antietam Foundation |
| SHARE | Sacred Hoop of American Resource Exchange |
| SHARE | Sending Help And Rehabilitation Everywhere |
| SHARE | Slaughter Horse Adoption Rescue Effort |
| SHAT | Stichting Hulp Aan Tibetanen |
| SHC | Shriners Hospitals for Children |
| SHC | Sudan Heart Center |
| SHCA | Society for Healthcare Consumer Advocacy |
| SHEA | Society for Healthcare Epidemiology of America |
| SHF | Starkey Hearing Foundation |
| SHHH | Self Help for Hard of Hearing |
| SHHHP | Self Help for Hard of Hearing People |
| SHHR | Spring Hill Horse Rescue |