| Abbreviation | Definition |
|---|---|
| SOLA | South Of Latin America |
| SOLAS | Safety Of Life At Sea |
| SOMS | Sons Of Man Savers |
| SONA | State Of the Nation Address |
| SOP | Source Of Power |
| SOR | Statutory Orders And Regulations |
| SOR | strength of recommendation |
| SORI | Sex Offender Registry Information |
| SORNA | Sex Offender Registration & Notification Act |
| SORP | Statement Of Recommended Practice |
| SOS | Save Our Society |
| SOS | Special Opportunity Stipend |
| SOS | Summary Opinion Support |
| SOS | Support Our Society |
| SOSA | Strength Of Support Assessment |
| SOSTAC | Situation, Objectives, and Strategy; Tactics, Action, and Control |
| SOT | Special Occupational Taxpayer |
| SOT | State or Tribe |
| SOTI | Special Office of Technical Industry |
| SOTI | State Owned Telecommunications Infrastructure |