| Abbreviation | Definition |
|---|---|
| SOAR | Student Organization for Animal Rights |
| SOAR | Support Our Aging Religious |
| SOBA | States Organization for Boating Access |
| SOBS | Security Operatives Benevolent Society |
| SOC | Society |
| SOCLEEN | Society for Clean Environment |
| SODA | Students Opposed to Drugs and Alcohol |
| SOE | Save Our Earth |
| SOFHT | Society of Food Hygiene and Technology |
| SOFT | Support Organization For Trisomy |
| SOFY | South Orange Family YMCA |
| SOHIM | Seeds of Hope International Ministries |
| SOI | Science Olympiad, Inc. |
| SOI | Sports Outreach Institute |
| SOII | Sports Outreach Institute, Inc. |
| SOINC | Science Olympiad, Inc. |
| SOL | Sound Of Light |
| SOLAI | Social Life Animation India |
| SOLVE | Save Our Lives, Volunteer Everyway |
| SOME | So Others Might Eat |