| Abbreviation | Definition |
|---|---|
| SPC | Secretariat of the Pacific Community |
| SPC | Society for Protective Coatings |
| SPCP | Society of Permanent Cosmetic Professionals |
| SPDA | Southern Peoples Development Association |
| SPDA | Syllabus Plus Data Adaptor |
| SPED | Society for Piping Engineers and Designers |
| SPEED | Scottish Power Electronics and Electric Drives Consortium |
| SPFA | Steel Plate Fabricators Association |
| SPGA | Standard Professional Golf Association |
| SPIE | Society of Photo-optical Instrumentation Engineers (International Society for Optical Engineering) |
| SPN | Society of Pediatric Nurses |
| SPOS | Student Professional Organizations SPO |
| SPSOA | Security Police Security Officers of America/unions |
| SPSOA | Security Police & Security Officers of America/unions |
| SPSR | Student Physicians for Social Responsibility |
| SPTA | Semi Parametric Test For Association |
| SPTA | Shanghai Pharmaceutical Trade Association |
| SPTA | Southern Pressure Treaters Association |
| SPTA | Student Parent Teacher Association |
| SPTA | Student Physical Therapy Association |