HIV, or human immunodeficiency virus, is a retrovirus that causes AIDS.

HIV or hiv may also refer to:

• .hiv, a generic top-level domain
• Hiv Rural District, in Alborz Province of Iran
  • Hiv, Iran, a village in the district
• H.IV+ (Hoarse Industrial Viremia), a 2009 album by Havoc Unit
• H.I.V (album), a 2012 album by Jovi

• Hive