LIV or Liv may refer to:
- 54 (number) in Roman numerals
- Liv (given name), a given name
- The Law Institute of Victoria
- The Lexikon der indogermanischen Verben ("Lexicon of the Indo-European Verbs")
- Line-item veto
- Liv (TV channel), a Finnish TV channel
- Liv, a Latin American TV channel now known as Investigation Discovery
- Liv (album), a 1971 album by Livingston Taylor
- Liv (film), a 1967 Norwegian film by Pål Løkkeberg
- Liverpool Lime Street railway station, England; National Rail station code LIV.
- Wilder's law of initial value in statistics
- An upcoming online channel from Living
- LiV DASH, a lithium-ion battery powered vehicle made by Hybrid Technologies
- Liv Glacier, Antarctic glacier from Barnum Peak and draining north
- Stefan Liv (1980-2011), a Polish-born Swedish professional ice hockey goaltender