| SSCA | Safe Schools Coalition Australia 
| Others |
| SSCA | Saint Saviour Catholic Academy
| Others |
| SSCA | Saloon Stock Car Association
| Others |
| SSCA | Santander Street Circuit Association
| Others |
| SSCA | Server Side Click Across
| Others |
| SSCA | Seven Seas Cruising Association
| Others |
| SSCA | Shining Stone Community Action
| Others |
| SSCA | Sign Square Contour Algorithm
| Others |
| SSCA | Simulated Sports Car Association
| Others |
| SSCA | Social Science Computing Association
| Others |
| SSCA | Software and Supply Chain Assurance
| Others |
| SSCA | South Shore Christian Academy
| Others |
| SSCA | Southern Shores Civic Association
| Others |
| SSCA | Southern States Communication Association
| Others |
| SSCA | Southern States Correctional Association
| Others |
| SSCA | Southern Street Car Association
| Others |
| SSCA | Sport Stamps Collectors Association
| Others |
| SSCA | Springdale School Community Association
| Others |
| SSCA | St Saviour Catholic Academy
| Others |
| SSCA | Standard Schnauzer Club of America
| Others |
| SSCA | State of the Startup Community Address
| Others |
| SSCA | State Secretariat of Civil Aviation
| Others |
| SSCA | Static State Control Area
| Others |
| SSCA | Statistical Service Corporation of Austin
| Others |
| ssca | Statistics, Surveillance, and Control Archive (CDC)
| Others |
| SSCA | Student Specific Corrective Action
| Others |
| SSCA | Sunnyvale Sister City Association
| Others |
| SSCA | Surface Sampler Control Assembly
| Others |
| SSCA | Suzuki Swift Club Australia
| Others |