| SSPIA | Science Students Pacific Islands Association 
| Others |
| SSPIA | Scottish Society of Paranormal Investigation and Analysis
| Others |
| SSPIA | Shenzhen Security and Protection Industry Association
| Others |
| SSPIA | Sibley State Park Improvement Association
| Others |
| SSPIA | SkyScraper Page Illustrators' Association
| Others |
| SSPIA | Student Services Programming and Implementation Activity
| Others |