| Abbreviation | Definition |
|---|---|
| SPCC | Ships Parts Control Center (USN) |
| SPCM | Space Planning Criteria Manual |
| SPCP | State Polytechnic College Of Palawan |
| SPD | Sozialdemokratische Partei Deutschland |
| SPD | spatial discrimination |
| SPD | Summary Plan Description |
| SPD | System Program Description |
| SPDF | Seychelles People Defence Force |
| SPDF | Seychelles Peoples Defence Forces |
| SPEAR | Small Precision Enhanced Aiming Rangefinder |
| SPEAR | Strike Protection Evaluation and Antiair Research |
| SPEC | Space Environmental Compatibility (Model) |
| SPEC | Specialist |
| SPEC | Specification |
| SPEC | Specified |
| SPECAT | SPECial CATegory |
| SPECC | Space-Enhanced Command and Control |
| SPECS | Scientific Progression of Extreme Combat Survival |
| SPECWAR | Special Warfare |
| SPEEDEX | System-wide Project for Electronic Equipment at Depots- Extended |