| SID | Sudden Ionospheric Disturbance | - | Atmospheric Research Center |
| SID | Surface Ionization Detector | - | Computer Acronyms(common) |
| SID | Selected Ion Detection | - | Computer Acronyms(common) |
| SID | Surface Induced Dissociation | - | Computer Acronyms(common) |
| SID | Shuttle Integration Device | - | Organizations |
| SID | Simulator Interface Devices | - | Organizations |
| SID | Standard Interface Document | - | Organizations |
| SID | System Interface Document | - | Organizations |
| SID | Society For International Development | - | Satellite Meterology |
| SID | Sudden Ionospheric Disturbance | - | Business and Finance |
