| Acronym | Definition |
|---|
| SIV➣Simian Immunodeficiency Virus |
| SIV➣Sykehuset I Vestfold (Norwegian hospital) |
| SIV➣Seasonal Influenza Vaccine |
| SIV➣Swine Influenza Virus |
| SIV➣Structured Investment Vehicle |
| SIV➣System Information Viewer |
| SIV➣Système d'Immatriculation des Véhicules (French: Vehicle Registration System) |
| SIV➣Suporte Imediato de Vida (Portuguese: Immediate Life Support) |
| SIV➣Small Islands Voice |
| SIV➣Self-Inflicted Violence |
| SIV➣Special Immigrant Visa (US State Department) |
| SIV➣Special Investment Vehicle |
| SIV➣Special Interest Vessel (US DoD) |
| SIV➣Speaker Identification and Verification (speech recognition) |
| SIV➣Société Industrielle de Vitrines (French metalwork company) |
| SIV➣Simulation d'Incident en Vol (French: Simulated Incidence in Flight; paragliding) |
| SIV➣Site Initiation Visit |
| SIV➣Setto Interventricolare (Italian) |
| SIV➣Servizio Informazioni del Vaticano (Frontier magazine march 2008, article about extraterrestial contact) |
| SIV➣Situs Inversus Viscerum |
| SIV➣Silo Interface Vault (missile defense) |
| SIV➣Sorry I Vanished (chat) |
| SIV➣Speed Increase Valve |
| SIV➣Sound in Video |
| SIV➣Safety Interlocks Valid |
| SIV➣System Integration Van/Vehicle |
| SIV➣Sensors in Vacuum (engineering) |
| SIV➣Service d'Immuno Virologies (French: Immunovirology Department; Atomic Energy Commission) |