| Acronym | Definition |
|---|
| SIH | Southern Illinois Healthcare |
| SIH | Syndicat Interhospitalier (French: union of hospitals) |
| SIH | Système d'Information Hospitalier |
| SIH | Settled in Heaven Ministries (ministry) |
| SIH | Salicylaldehyde Isonicotinoyl Hydrazone |
| SIH | Satellite Instrument House (data transfer structure) |
| SIH | Scottish Ice Hockey (UK) |
| SIH | Seafarers and International House (New York, NY) |
| SIH | Socially Induced Hyperactivity |
