SIV or Siv may refer to:

• Federal Executive Council (Yugoslavia) or Savezno izvršno veće (SIV)
• Sydney Intervarsity Choral Festival
• Sheffield International Venues, a facilities management company in Sheffield, UK
• Surinaamse Islamitische Vereniging, an Islamic association in Suriname

• Siv (given name), a feminine given name

• Siv, Iran, a village in Kurdistan Province, Iran
• Siv Kladenets, a village Haskovo Province, Bulgaria

• S IV, a shortcut pronoun for the Samsung Galaxy S4 Android smartphone
• Stress migration (Stress-induced voiding), a failure mechanism in MOSFETs
• Key Wrap (Synthetic Initialization Vector), a cryptographic key-wrapping algorithm
• Simian immunodeficiency virus, a virus found in primates and related to HIV
• Swine influenza virus, the cause of influenza in pigs
• Silicon-vacancy center in diamond (Si-V), an optically active defect in diamond

• SIV, the IATA and FAA code for Sullivan County Airport, Sullivan County, Indiana, USA
• SIV, the National Rail code for St Ives railway station, Cornwall, UK

• Special Immigrant Visa, a type of immigrant visa in the United States
• Structured investment vehicle, a type of fund in the non-bank financial system

• SIW (disambiguation)
• Siva (disambiguation)
• Steve (disambiguation)

This disambiguation page lists articles associated with the title SIV.
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