| Term | Full Form | Category |
|---|---|---|
| WSSO | AM-1230, Starkville, Mississippi | Others |
| WSSO | Washington School Safety Organization | Others |
| WSSO | Washington State Specific Objectives for First Respoonder Reciprocal Certification | Others |
| WSSO | Weapon System Support Officer | Others |
| WSSO | West of Scotland School Orchestra | Others |
| WSSO | West Shore Symphony Orchestra | Others |
| WSSO | West Suburban Symphony Orchestra | Others |
| WSSO | Winston-Salem Symphony Orchestra | Others |
| WSSO | Women's Studies Student Organization | Others |
| WSSO | Workstation Single Sign On | Others |