| SSST | Society of the Most Holy Trinity (The Trinitarians) (religious order) | 最神圣三位一体协会(三位一体)(宗教秩序) |
| SSST | Standard Seedbox Screening Test | 标准种子箱筛选试验 |
| SSST | Stealth Satellite System Terminator | 隐形卫星系统终端 |
| SSST | Supersonic Sea Skimming Target | 超音速掠海目标 |
| SSST | Short Scottish Secure Tenancy (Scottish law) | 短期苏格兰安全租约(苏格兰法律) |
| SSST | superior sagittal sinus thromboses | 上矢状窦血栓 |
| SSST | Space Station Systems Trainer | 空间站系统培训师 |
| SSST | Southeastern Symposium on System Theory | 东南系统理论研讨会 |
| SSST | Smart Sensor System Testbed (networking) | 智能传感器系统测试台(联网) |
| SSST | Simulation System Support Team | 仿真系统支持团队 |
| SSST | Super Secret Sideboard Tech (gaming, CCG Magic:The Gathering) | 超级秘密侧板技术(游戏、CCG魔术:聚会) |