SIDC
| Acronym | Definition |
|---|---|
| SIDC | Solar Influences Data analysis Center (Royal Observatory of Belgium) |
| SIDC | Subaru Impreza Drivers Club (UK) |
| SIDC | Sunspot Index Data Center |
| SIDC | Space Innovation and Development Center (US Air Force; formerly Space Warfare Center) |
| SIDC | Subaru International Drivers Club (car club; UK) |
| SIDC | Support Issues Development Committee |
| SIDC | Supply Item Design Change |