| Acronym | Definition |
|---|
| SSSN➣SADC (South African Development Community) Seed Security Network |
| SSSN➣Super Secret Spy Network |
| SSSN➣Swiss Sentinel Surveillance Network (est. 1986) |
| SSSN➣Straight Spouse Support Network (El Cerrito, CA) |
| SSSN➣Siddha Samaz Sewa Nepal (Kathmandu, Nepal) |
| SSSN➣System Subsystem Sub-Subsystem Numbering (MIL-STD-1808) |