KV, kV, Kv, or kv may refer to:
- Science, engineering
- Kv, Voltage-gated potassium channel, in cell biology, a type of potassium channel
- kV, Kilovolts, 1000 volts
- Kv (flow factor), a measure of the flow factor of a liquid
- KV, the toughness of a material as defined by the Charpy V Test, units: Joule
- Kv, motor velocity constant, an electric motor constant.
- Organisations and companies
- Kendriya Vidyalaya, a system of schools for the children of public servants in India
- The Katholieke Verkenners (Catholic Scouts), one of the Scouting organisations that evolved into Scouting Nederland, the national Scouting organisation of the Netherlands
- Koninklijke Voetbalclub (Royal Football Club), see Koninklijke Voetbalvereniging (disambiguation)
- KV Racing Technology, an auto racing team
- KV Pharmaceutical, a drug company
- Official acronyms
- Kavminvodyavia (a Russian airline), IATA operator code
- Kliment Voroshilov tanks, a series of WWII heavy tanks of the Soviet Union
- The prefix (NoCGV in English) for Norwegian Coast Guard vessels.
- Komi language, ISO 639 alpha-2 code
- KV (Egypt), an acronym referring to tombs in the Valley of the Kings in Egypt
- KV, Köchel-Verzeichnis, a chronological catalogue of all the compositions of Mozart
- KV, FIPS country code for Kosovo (List of FIPS country codes)
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